tlan.c 84.5 KB
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/*******************************************************************************
 *
 *  Linux ThunderLAN Driver
 *
 *  tlan.c
 *  by James Banks
 *
 *  (C) 1997-1998 Caldera, Inc.
 *  (C) 1998 James Banks
 *  (C) 1999-2001 Torben Mathiasen
 *  (C) 2002 Samuel Chessman
 *
 *  This software may be used and distributed according to the terms
 *  of the GNU General Public License, incorporated herein by reference.
 *
 ** Useful (if not required) reading:
 *
 *		Texas Instruments, ThunderLAN Programmer's Guide,
 *			TI Literature Number SPWU013A
 *			available in PDF format from www.ti.com
 *		Level One, LXT901 and LXT970 Data Sheets
 *			available in PDF format from www.level1.com
 *		National Semiconductor, DP83840A Data Sheet
 *			available in PDF format from www.national.com
 *		Microchip Technology, 24C01A/02A/04A Data Sheet
 *			available in PDF format from www.microchip.com
 *
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 ******************************************************************************/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/hardirq.h>
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#include <linux/module.h>
#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
#include <linux/eisa.h>
#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/mii.h>

#include "tlan.h"


/* For removing EISA devices */
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static	struct net_device	*tlan_eisa_devices;
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static	int		tlan_devices_installed;
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/* Set speed, duplex and aui settings */
static  int aui[MAX_TLAN_BOARDS];
static  int duplex[MAX_TLAN_BOARDS];
static  int speed[MAX_TLAN_BOARDS];
static  int boards_found;
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module_param_array(aui, int, NULL, 0);
module_param_array(duplex, int, NULL, 0);
module_param_array(speed, int, NULL, 0);
MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
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MODULE_PARM_DESC(duplex,
		 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
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MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
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MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
MODULE_LICENSE("GPL");


/* Define this to enable Link beat monitoring */
#undef MONITOR

/* Turn on debugging. See Documentation/networking/tlan.txt for details */
static  int		debug;
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module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
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static	const char tlan_signature[] = "TLAN";
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static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
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static  int tlan_have_pci;
static  int tlan_have_eisa;

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static const char * const media[] = {
	"10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
	"100BaseTx-FD", "100BaseT4", NULL
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};

static struct board {
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	const char	*device_label;
	u32		flags;
	u16		addr_ofs;
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} board_info[] = {
	{ "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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	{ "Compaq Netelligent 10/100 TX PCI UTP",
	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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	{ "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
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	{ "Compaq NetFlex-3/P",
	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
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	{ "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
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	{ "Compaq Netelligent Integrated 10/100 TX UTP",
	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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	{ "Compaq Netelligent Dual 10/100 TX PCI UTP",
	  TLAN_ADAPTER_NONE, 0x83 },
	{ "Compaq Netelligent 10/100 TX Embedded UTP",
	  TLAN_ADAPTER_NONE, 0x83 },
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	{ "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
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	{ "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
	  TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
	{ "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
	  TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
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	{ "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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	{ "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
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	{ "Compaq NetFlex-3/E",
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	  TLAN_ADAPTER_ACTIVITY_LED |	/* EISA card */
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	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
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	{ "Compaq NetFlex-3/E",
	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
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};

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static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
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	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
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	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
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	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
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	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
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	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
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	{ 0,}
};
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MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
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static void	tlan_eisa_probe(void);
static void	tlan_eisa_cleanup(void);
static int      tlan_init(struct net_device *);
static int	tlan_open(struct net_device *dev);
static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
static irqreturn_t tlan_handle_interrupt(int, void *);
static int	tlan_close(struct net_device *);
static struct	net_device_stats *tlan_get_stats(struct net_device *);
static void	tlan_set_multicast_list(struct net_device *);
static int	tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
			    int irq, int rev, const struct pci_device_id *ent);
static void	tlan_tx_timeout(struct net_device *dev);
static void	tlan_tx_timeout_work(struct work_struct *work);
static int	tlan_init_one(struct pci_dev *pdev,
			      const struct pci_device_id *ent);

static u32	tlan_handle_tx_eof(struct net_device *, u16);
static u32	tlan_handle_stat_overflow(struct net_device *, u16);
static u32	tlan_handle_rx_eof(struct net_device *, u16);
static u32	tlan_handle_dummy(struct net_device *, u16);
static u32	tlan_handle_tx_eoc(struct net_device *, u16);
static u32	tlan_handle_status_check(struct net_device *, u16);
static u32	tlan_handle_rx_eoc(struct net_device *, u16);

static void	tlan_timer(unsigned long);

static void	tlan_reset_lists(struct net_device *);
static void	tlan_free_lists(struct net_device *);
static void	tlan_print_dio(u16);
static void	tlan_print_list(struct tlan_list *, char *, int);
static void	tlan_read_and_clear_stats(struct net_device *, int);
static void	tlan_reset_adapter(struct net_device *);
static void	tlan_finish_reset(struct net_device *);
static void	tlan_set_mac(struct net_device *, int areg, char *mac);

static void	tlan_phy_print(struct net_device *);
static void	tlan_phy_detect(struct net_device *);
static void	tlan_phy_power_down(struct net_device *);
static void	tlan_phy_power_up(struct net_device *);
static void	tlan_phy_reset(struct net_device *);
static void	tlan_phy_start_link(struct net_device *);
static void	tlan_phy_finish_auto_neg(struct net_device *);
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#ifdef MONITOR
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static void     tlan_phy_monitor(struct net_device *);
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#endif

/*
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  static int	tlan_phy_nop(struct net_device *);
  static int	tlan_phy_internal_check(struct net_device *);
  static int	tlan_phy_internal_service(struct net_device *);
  static int	tlan_phy_dp83840a_check(struct net_device *);
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*/

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static bool	tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
static void	tlan_mii_send_data(u16, u32, unsigned);
static void	tlan_mii_sync(u16);
static void	tlan_mii_write_reg(struct net_device *, u16, u16, u16);
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static void	tlan_ee_send_start(u16);
static int	tlan_ee_send_byte(u16, u8, int);
static void	tlan_ee_receive_byte(u16, u8 *, int);
static int	tlan_ee_read_byte(struct net_device *, u8, u8 *);
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static inline void
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tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
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{
	unsigned long addr = (unsigned long)skb;
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	tag->buffer[9].address = addr;
	tag->buffer[8].address = upper_32_bits(addr);
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}

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static inline struct sk_buff *
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tlan_get_skb(const struct tlan_list *tag)
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{
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	unsigned long addr;

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	addr = tag->buffer[9].address;
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	addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
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	return (struct sk_buff *) addr;
}

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static u32
(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
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	NULL,
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	tlan_handle_tx_eof,
	tlan_handle_stat_overflow,
	tlan_handle_rx_eof,
	tlan_handle_dummy,
	tlan_handle_tx_eoc,
	tlan_handle_status_check,
	tlan_handle_rx_eoc
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};

static inline void
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tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
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{
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	struct tlan_priv *priv = netdev_priv(dev);
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	unsigned long flags = 0;
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	if (!in_irq())
		spin_lock_irqsave(&priv->lock, flags);
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	if (priv->timer.function != NULL &&
	    priv->timer_type != TLAN_TIMER_ACTIVITY) {
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		if (!in_irq())
			spin_unlock_irqrestore(&priv->lock, flags);
		return;
	}
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	priv->timer.function = tlan_timer;
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	if (!in_irq())
		spin_unlock_irqrestore(&priv->lock, flags);

	priv->timer.data = (unsigned long) dev;
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	priv->timer_set_at = jiffies;
	priv->timer_type = type;
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	mod_timer(&priv->timer, jiffies + ticks);
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}
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/*****************************************************************************
******************************************************************************

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ThunderLAN driver primary functions
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these functions are more or less common to all linux network drivers.
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******************************************************************************
*****************************************************************************/





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/***************************************************************
 *	tlan_remove_one
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		None
 *
 *	Goes through the TLanDevices list and frees the device
 *	structs and memory associated with each device (lists
 *	and buffers).  It also ureserves the IO port regions
 *	associated with this device.
 *
 **************************************************************/
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static void tlan_remove_one(struct pci_dev *pdev)
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{
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	struct net_device *dev = pci_get_drvdata(pdev);
	struct tlan_priv	*priv = netdev_priv(dev);
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	unregister_netdev(dev);
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	if (priv->dma_storage) {
		pci_free_consistent(priv->pci_dev,
				    priv->dma_size, priv->dma_storage,
				    priv->dma_storage_dma);
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	}

#ifdef CONFIG_PCI
	pci_release_regions(pdev);
#endif
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	free_netdev(dev);
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	cancel_work_sync(&priv->tlan_tqueue);
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}
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static void tlan_start(struct net_device *dev)
{
	tlan_reset_lists(dev);
	/* NOTE: It might not be necessary to read the stats before a
	   reset if you don't care what the values are.
	*/
	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
	tlan_reset_adapter(dev);
	netif_wake_queue(dev);
}

static void tlan_stop(struct net_device *dev)
{
	struct tlan_priv *priv = netdev_priv(dev);

	tlan_read_and_clear_stats(dev, TLAN_RECORD);
	outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
	/* Reset and power down phy */
	tlan_reset_adapter(dev);
	if (priv->timer.function != NULL) {
		del_timer_sync(&priv->timer);
		priv->timer.function = NULL;
	}
}

#ifdef CONFIG_PM

static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
{
	struct net_device *dev = pci_get_drvdata(pdev);

	if (netif_running(dev))
		tlan_stop(dev);

	netif_device_detach(dev);
	pci_save_state(pdev);
	pci_disable_device(pdev);
	pci_wake_from_d3(pdev, false);
	pci_set_power_state(pdev, PCI_D3hot);

	return 0;
}

static int tlan_resume(struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata(pdev);

	pci_set_power_state(pdev, PCI_D0);
	pci_restore_state(pdev);
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	pci_enable_wake(pdev, PCI_D0, 0);
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	netif_device_attach(dev);

	if (netif_running(dev))
		tlan_start(dev);

	return 0;
}

#else /* CONFIG_PM */

#define tlan_suspend   NULL
#define tlan_resume    NULL

#endif /* CONFIG_PM */


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static struct pci_driver tlan_driver = {
	.name		= "tlan",
	.id_table	= tlan_pci_tbl,
	.probe		= tlan_init_one,
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	.remove		= tlan_remove_one,
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	.suspend	= tlan_suspend,
	.resume		= tlan_resume,
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};

static int __init tlan_probe(void)
{
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	int rc = -ENODEV;
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	pr_info("%s", tlan_banner);
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	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
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	/* Use new style PCI probing. Now the kernel will
	   do most of this for us */
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	rc = pci_register_driver(&tlan_driver);

	if (rc != 0) {
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		pr_err("Could not register pci driver\n");
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		goto err_out_pci_free;
	}
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	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
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	tlan_eisa_probe();
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	pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
		tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
		tlan_have_pci, tlan_have_eisa);
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	if (tlan_devices_installed == 0) {
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		rc = -ENODEV;
		goto  err_out_pci_unreg;
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	}
	return 0;
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err_out_pci_unreg:
	pci_unregister_driver(&tlan_driver);
err_out_pci_free:
	return rc;
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}
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static int tlan_init_one(struct pci_dev *pdev,
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				   const struct pci_device_id *ent)
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{
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	return tlan_probe1(pdev, -1, -1, 0, ent);
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}


/*
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***************************************************************
*	tlan_probe1
*
*	Returns:
*		0 on success, error code on error
*	Parms:
*		none
*
*	The name is lower case to fit in with all the rest of
*	the netcard_probe names.  This function looks for
*	another TLan based adapter, setting it up with the
*	allocated device struct if one is found.
*	tlan_probe has been ported to the new net API and
*	now allocates its own device structure. This function
*	is also used by modules.
*
**************************************************************/

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static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
		       const struct pci_device_id *ent)
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{

	struct net_device  *dev;
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	struct tlan_priv  *priv;
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	u16		   device_id;
	int		   reg, rc = -ENODEV;

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#ifdef CONFIG_PCI
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	if (pdev) {
		rc = pci_enable_device(pdev);
		if (rc)
			return rc;

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		rc = pci_request_regions(pdev, tlan_signature);
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		if (rc) {
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			pr_err("Could not reserve IO regions\n");
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			goto err_out;
		}
	}
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#endif  /*  CONFIG_PCI  */
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	dev = alloc_etherdev(sizeof(struct tlan_priv));
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	if (dev == NULL) {
		rc = -ENOMEM;
		goto err_out_regions;
	}
	SET_NETDEV_DEV(dev, &pdev->dev);
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	priv = netdev_priv(dev);

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	priv->pci_dev = pdev;
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	priv->dev = dev;
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	/* Is this a PCI device? */
	if (pdev) {
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		u32		   pci_io_base = 0;
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503 504 505

		priv->adapter = &board_info[ent->driver_data];

506
		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
L
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507
		if (rc) {
508
			pr_err("No suitable PCI mapping available\n");
L
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509 510 511
			goto err_out_free_dev;
		}

512
		for (reg = 0; reg <= 5; reg++) {
L
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513 514
			if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
				pci_io_base = pci_resource_start(pdev, reg);
515 516 517
				TLAN_DBG(TLAN_DEBUG_GNRL,
					 "IO mapping is available at %x.\n",
					 pci_io_base);
L
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518 519 520 521
				break;
			}
		}
		if (!pci_io_base) {
522
			pr_err("No IO mappings available\n");
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523 524 525
			rc = -EIO;
			goto err_out_free_dev;
		}
526

L
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527 528
		dev->base_addr = pci_io_base;
		dev->irq = pdev->irq;
529
		priv->adapter_rev = pdev->revision;
L
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530 531 532 533 534 535 536 537
		pci_set_master(pdev);
		pci_set_drvdata(pdev, dev);

	} else	{     /* EISA card */
		/* This is a hack. We need to know which board structure
		 * is suited for this adapter */
		device_id = inw(ioaddr + EISA_ID2);
		if (device_id == 0x20F1) {
538 539
			priv->adapter = &board_info[13]; /* NetFlex-3/E */
			priv->adapter_rev = 23;		/* TLAN 2.3 */
L
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540 541
		} else {
			priv->adapter = &board_info[14];
542
			priv->adapter_rev = 10;		/* TLAN 1.0 */
L
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543 544 545 546 547 548 549 550
		}
		dev->base_addr = ioaddr;
		dev->irq = irq;
	}

	/* Kernel parameters */
	if (dev->mem_start) {
		priv->aui    = dev->mem_start & 0x01;
S
Stephen Hemminger 已提交
551 552 553 554
		priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
			: (dev->mem_start & 0x06) >> 1;
		priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
			: (dev->mem_start & 0x18) >> 3;
555

556
		if (priv->speed == 0x1)
L
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557
			priv->speed = TLAN_SPEED_10;
558
		else if (priv->speed == 0x2)
L
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559
			priv->speed = TLAN_SPEED_100;
560

L
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561 562 563 564 565 566 567
		debug = priv->debug = dev->mem_end;
	} else {
		priv->aui    = aui[boards_found];
		priv->speed  = speed[boards_found];
		priv->duplex = duplex[boards_found];
		priv->debug = debug;
	}
568

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569 570
	/* This will be used when we get an adapter error from
	 * within our irq handler */
571
	INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
L
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572 573

	spin_lock_init(&priv->lock);
574

575
	rc = tlan_init(dev);
L
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576
	if (rc) {
577
		pr_err("Could not set up device\n");
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578 579 580 581 582
		goto err_out_free_dev;
	}

	rc = register_netdev(dev);
	if (rc) {
583
		pr_err("Could not register device\n");
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584 585 586
		goto err_out_uninit;
	}

587

588
	tlan_devices_installed++;
L
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589
	boards_found++;
590

L
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591 592 593 594
	/* pdev is NULL if this is an EISA device */
	if (pdev)
		tlan_have_pci++;
	else {
595 596
		priv->next_device = tlan_eisa_devices;
		tlan_eisa_devices = dev;
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		tlan_have_eisa++;
	}
599

600 601 602 603 604
	netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
		    (int)dev->irq,
		    (int)dev->base_addr,
		    priv->adapter->device_label,
		    priv->adapter_rev);
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	return 0;

err_out_uninit:
608 609
	pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
			    priv->dma_storage_dma);
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err_out_free_dev:
	free_netdev(dev);
err_out_regions:
#ifdef CONFIG_PCI
	if (pdev)
		pci_release_regions(pdev);
#endif
err_out:
	if (pdev)
		pci_disable_device(pdev);
	return rc;
}


624
static void tlan_eisa_cleanup(void)
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625 626
{
	struct net_device *dev;
627
	struct tlan_priv *priv;
628

629 630
	while (tlan_have_eisa) {
		dev = tlan_eisa_devices;
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631
		priv = netdev_priv(dev);
632 633 634 635
		if (priv->dma_storage) {
			pci_free_consistent(priv->pci_dev, priv->dma_size,
					    priv->dma_storage,
					    priv->dma_storage_dma);
L
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636
		}
637 638 639 640
		release_region(dev->base_addr, 0x10);
		unregister_netdev(dev);
		tlan_eisa_devices = priv->next_device;
		free_netdev(dev);
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641 642 643
		tlan_have_eisa--;
	}
}
644 645


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static void __exit tlan_exit(void)
{
	pci_unregister_driver(&tlan_driver);

	if (tlan_have_eisa)
651
		tlan_eisa_cleanup();
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}


/* Module loading/unloading */
module_init(tlan_probe);
module_exit(tlan_exit);



662 663 664 665 666 667 668 669 670 671 672 673
/**************************************************************
 *	tlan_eisa_probe
 *
 *	Returns: 0 on success, 1 otherwise
 *
 *	Parms:	 None
 *
 *
 *	This functions probes for EISA devices and calls
 *	TLan_probe1 when one is found.
 *
 *************************************************************/
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674

675
static void  __init tlan_eisa_probe(void)
L
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676
{
677 678 679
	long	ioaddr;
	int	rc = -ENODEV;
	int	irq;
L
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680 681
	u16	device_id;

682
	if (!EISA_bus) {
L
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683 684 685
		TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
		return;
	}
686

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687 688
	/* Loop through all slots of the EISA bus */
	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
689

690 691 692 693
		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
			 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
			 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
L
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694 695


696 697 698 699
		TLAN_DBG(TLAN_DEBUG_PROBE,
			 "Probing for EISA adapter at IO: 0x%4x : ",
			 (int) ioaddr);
		if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
L
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700 701
			goto out;

702
		if (inw(ioaddr + EISA_ID) != 0x110E) {
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703 704 705
			release_region(ioaddr, 0x10);
			goto out;
		}
706

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707
		device_id = inw(ioaddr + EISA_ID2);
708
		if (device_id !=  0x20F1 && device_id != 0x40F1) {
709
			release_region(ioaddr, 0x10);
L
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710 711
			goto out;
		}
712

713 714 715
		/* check if adapter is enabled */
		if (inb(ioaddr + EISA_CR) != 0x1) {
			release_region(ioaddr, 0x10);
L
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716 717
			goto out2;
		}
718 719

		if (debug == 0x10)
720
			pr_info("Found one\n");
L
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721 722 723


		/* Get irq from board */
724 725 726 727 728 729 730 731 732 733 734 735 736 737 738
		switch (inb(ioaddr + 0xcc0)) {
		case(0x10):
			irq = 5;
			break;
		case(0x20):
			irq = 9;
			break;
		case(0x40):
			irq = 10;
			break;
		case(0x80):
			irq = 11;
			break;
		default:
			goto out;
739 740 741
		}


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742
		/* Setup the newly found eisa adapter */
743 744
		rc = tlan_probe1(NULL, ioaddr, irq,
				 12, NULL);
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745
		continue;
746

747 748
out:
		if (debug == 0x10)
749
			pr_info("None found\n");
750
		continue;
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751

752 753
out2:
		if (debug == 0x10)
754
			pr_info("Card found but it is not enabled, skipping\n");
755
		continue;
756

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757 758
	}

759
}
L
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760 761

#ifdef CONFIG_NET_POLL_CONTROLLER
762
static void tlan_poll(struct net_device *dev)
L
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763 764
{
	disable_irq(dev->irq);
765
	tlan_handle_interrupt(dev->irq, dev);
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	enable_irq(dev->irq);
}
#endif

770 771 772 773 774 775
static const struct net_device_ops tlan_netdev_ops = {
	.ndo_open		= tlan_open,
	.ndo_stop		= tlan_close,
	.ndo_start_xmit		= tlan_start_tx,
	.ndo_tx_timeout		= tlan_tx_timeout,
	.ndo_get_stats		= tlan_get_stats,
776
	.ndo_set_rx_mode	= tlan_set_multicast_list,
777
	.ndo_do_ioctl		= tlan_ioctl,
778
	.ndo_change_mtu		= eth_change_mtu,
779
	.ndo_set_mac_address	= eth_mac_addr,
780 781
	.ndo_validate_addr	= eth_validate_addr,
#ifdef CONFIG_NET_POLL_CONTROLLER
782
	.ndo_poll_controller	 = tlan_poll,
783 784
#endif
};
785

L
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786 787


788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
/***************************************************************
 *	tlan_init
 *
 *	Returns:
 *		0 on success, error code otherwise.
 *	Parms:
 *		dev	The structure of the device to be
 *			init'ed.
 *
 *	This function completes the initialization of the
 *	device structure and driver.  It reserves the IO
 *	addresses, allocates memory for the lists and bounce
 *	buffers, retrieves the MAC address from the eeprom
 *	and assignes the device's methods.
 *
 **************************************************************/

static int tlan_init(struct net_device *dev)
L
Linus Torvalds 已提交
806 807
{
	int		dma_size;
808
	int		err;
L
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809
	int		i;
810
	struct tlan_priv	*priv;
L
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811 812

	priv = netdev_priv(dev);
813

814 815 816 817 818 819 820 821
	dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
		* (sizeof(struct tlan_list));
	priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
						 dma_size,
						 &priv->dma_storage_dma);
	priv->dma_size = dma_size;

	if (priv->dma_storage == NULL) {
822
		pr_err("Could not allocate lists and buffers for %s\n",
823
		       dev->name);
L
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824 825
		return -ENOMEM;
	}
826 827 828 829 830 831 832
	memset(priv->dma_storage, 0, dma_size);
	priv->rx_list = (struct tlan_list *)
		ALIGN((unsigned long)priv->dma_storage, 8);
	priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
	priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
	priv->tx_list_dma =
		priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
S
Stephen Hemminger 已提交
833

L
Linus Torvalds 已提交
834
	err = 0;
835 836 837 838 839
	for (i = 0;  i < 6 ; i++)
		err |= tlan_ee_read_byte(dev,
					 (u8) priv->adapter->addr_ofs + i,
					 (u8 *) &dev->dev_addr[i]);
	if (err) {
840 841
		pr_err("%s: Error reading MAC from eeprom: %d\n",
		       dev->name, err);
L
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842 843 844 845 846 847
	}
	dev->addr_len = 6;

	netif_carrier_off(dev);

	/* Device methods */
848
	dev->netdev_ops = &tlan_netdev_ops;
L
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849 850 851 852
	dev->watchdog_timeo = TX_TIMEOUT;

	return 0;

853
}
L
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854 855 856 857




858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873
/***************************************************************
 *	tlan_open
 *
 *	Returns:
 *		0 on success, error code otherwise.
 *	Parms:
 *		dev	Structure of device to be opened.
 *
 *	This routine puts the driver and TLAN adapter in a
 *	state where it is ready to send and receive packets.
 *	It allocates the IRQ, resets and brings the adapter
 *	out of reset, and allows interrupts.  It also delays
 *	the startup for autonegotiation or sends a Rx GO
 *	command to the adapter, as appropriate.
 *
 **************************************************************/
L
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874

875
static int tlan_open(struct net_device *dev)
L
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876
{
877
	struct tlan_priv	*priv = netdev_priv(dev);
L
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878
	int		err;
879

880 881 882
	priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
	err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
			  dev->name, dev);
883

884
	if (err) {
885 886
		netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
			   dev->irq);
L
Linus Torvalds 已提交
887 888
		return err;
	}
889

L
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890
	init_timer(&priv->timer);
891

S
Sakari Ailus 已提交
892
	tlan_start(dev);
L
Linus Torvalds 已提交
893

894 895
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
		 dev->name, priv->tlan_rev);
L
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896 897 898

	return 0;

899
}
L
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900 901 902



903 904 905 906 907 908 909 910 911 912 913 914 915 916
/**************************************************************
 *	tlan_ioctl
 *
 *	Returns:
 *		0 on success, error code otherwise
 *	Params:
 *		dev	structure of device to receive ioctl.
 *
 *		rq	ifreq structure to hold userspace data.
 *
 *		cmd	ioctl command.
 *
 *
 *************************************************************/
L
Linus Torvalds 已提交
917

918
static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
L
Linus Torvalds 已提交
919
{
920
	struct tlan_priv *priv = netdev_priv(dev);
L
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921
	struct mii_ioctl_data *data = if_mii(rq);
922
	u32 phy   = priv->phy[priv->phy_num];
923

924
	if (!priv->phy_online)
L
Linus Torvalds 已提交
925 926
		return -EAGAIN;

927 928 929
	switch (cmd) {
	case SIOCGMIIPHY:		/* get address of MII PHY in use. */
		data->phy_id = phy;
L
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930 931


932 933 934 935
	case SIOCGMIIREG:		/* read MII PHY register. */
		tlan_mii_read_reg(dev, data->phy_id & 0x1f,
				  data->reg_num & 0x1f, &data->val_out);
		return 0;
936

L
Linus Torvalds 已提交
937

938 939 940 941 942 943
	case SIOCSMIIREG:		/* write MII PHY register. */
		tlan_mii_write_reg(dev, data->phy_id & 0x1f,
				   data->reg_num & 0x1f, data->val_in);
		return 0;
	default:
		return -EOPNOTSUPP;
L
Linus Torvalds 已提交
944
	}
945
}
L
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946 947


948 949 950 951 952 953 954 955 956 957
/***************************************************************
 *	tlan_tx_timeout
 *
 *	Returns: nothing
 *
 *	Params:
 *		dev	structure of device which timed out
 *			during transmit.
 *
 **************************************************************/
L
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958

959
static void tlan_tx_timeout(struct net_device *dev)
L
Linus Torvalds 已提交
960
{
961

962
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
963

L
Linus Torvalds 已提交
964
	/* Ok so we timed out, lets see what we can do about it...*/
965 966 967 968
	tlan_free_lists(dev);
	tlan_reset_lists(dev);
	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
	tlan_reset_adapter(dev);
E
Eric Dumazet 已提交
969
	dev->trans_start = jiffies; /* prevent tx timeout */
970
	netif_wake_queue(dev);
L
Linus Torvalds 已提交
971 972

}
973

L
Linus Torvalds 已提交
974

975 976 977 978 979 980 981 982 983
/***************************************************************
 *	tlan_tx_timeout_work
 *
 *	Returns: nothing
 *
 *	Params:
 *		work	work item of device which timed out
 *
 **************************************************************/
D
David Howells 已提交
984

985
static void tlan_tx_timeout_work(struct work_struct *work)
D
David Howells 已提交
986
{
987 988
	struct tlan_priv	*priv =
		container_of(work, struct tlan_priv, tlan_tqueue);
D
David Howells 已提交
989

990
	tlan_tx_timeout(priv->dev);
D
David Howells 已提交
991 992 993
}


L
Linus Torvalds 已提交
994

995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016
/***************************************************************
 *	tlan_start_tx
 *
 *	Returns:
 *		0 on success, non-zero on failure.
 *	Parms:
 *		skb	A pointer to the sk_buff containing the
 *			frame to be sent.
 *		dev	The device to send the data on.
 *
 *	This function adds a frame to the Tx list to be sent
 *	ASAP.  First it	verifies that the adapter is ready and
 *	there is room in the queue.  Then it sets up the next
 *	available list, copies the frame to the	corresponding
 *	buffer.  If the adapter Tx channel is idle, it gives
 *	the adapter a Tx Go command on the list, otherwise it
 *	sets the forward address of the previous list to point
 *	to this one.  Then it frees the sk_buff.
 *
 **************************************************************/

static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
L
Linus Torvalds 已提交
1017
{
1018
	struct tlan_priv *priv = netdev_priv(dev);
L
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1019
	dma_addr_t	tail_list_phys;
1020
	struct tlan_list	*tail_list;
L
Linus Torvalds 已提交
1021
	unsigned long	flags;
1022
	unsigned int    txlen;
L
Linus Torvalds 已提交
1023

1024 1025 1026
	if (!priv->phy_online) {
		TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
			 dev->name);
L
Linus Torvalds 已提交
1027
		dev_kfree_skb_any(skb);
1028
		return NETDEV_TX_OK;
L
Linus Torvalds 已提交
1029 1030
	}

1031
	if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1032
		return NETDEV_TX_OK;
1033
	txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1034

1035 1036 1037
	tail_list = priv->tx_list + priv->tx_tail;
	tail_list_phys =
		priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1038

1039 1040 1041 1042
	if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
		TLAN_DBG(TLAN_DEBUG_TX,
			 "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
			 dev->name, priv->tx_head, priv->tx_tail);
L
Linus Torvalds 已提交
1043
		netif_stop_queue(dev);
1044
		priv->tx_busy_count++;
1045
		return NETDEV_TX_BUSY;
L
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1046 1047 1048 1049
	}

	tail_list->forward = 0;

1050
	tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1051 1052
						      skb->data, txlen,
						      PCI_DMA_TODEVICE);
1053
	tlan_store_skb(tail_list, skb);
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1055
	tail_list->frame_size = (u16) txlen;
1056
	tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1057 1058
	tail_list->buffer[1].count = 0;
	tail_list->buffer[1].address = 0;
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	spin_lock_irqsave(&priv->lock, flags);
1061 1062 1063 1064 1065 1066 1067 1068
	tail_list->c_stat = TLAN_CSTAT_READY;
	if (!priv->tx_in_progress) {
		priv->tx_in_progress = 1;
		TLAN_DBG(TLAN_DEBUG_TX,
			 "TRANSMIT:  Starting TX on buffer %d\n",
			 priv->tx_tail);
		outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
		outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
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	} else {
1070 1071 1072 1073 1074
		TLAN_DBG(TLAN_DEBUG_TX,
			 "TRANSMIT:  Adding buffer %d to TX channel\n",
			 priv->tx_tail);
		if (priv->tx_tail == 0) {
			(priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
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				= tail_list_phys;
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		} else {
1077
			(priv->tx_list + (priv->tx_tail - 1))->forward
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				= tail_list_phys;
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1079 1080 1081 1082
		}
	}
	spin_unlock_irqrestore(&priv->lock, flags);

1083
	CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
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1085
	return NETDEV_TX_OK;
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1087
}
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1088 1089 1090 1091




1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
/***************************************************************
 *	tlan_handle_interrupt
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		irq	The line on which the interrupt
 *			occurred.
 *		dev_id	A pointer to the device assigned to
 *			this irq line.
 *
 *	This function handles an interrupt generated by its
 *	assigned TLAN adapter.  The function deactivates
 *	interrupts on its adapter, records the type of
 *	interrupt, executes the appropriate subhandler, and
 *	acknowdges the interrupt to the adapter (thus
 *	re-enabling adapter interrupts.
 *
 **************************************************************/
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1112
static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
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{
1114
	struct net_device	*dev = dev_id;
1115
	struct tlan_priv *priv = netdev_priv(dev);
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	u16		host_int;
1117
	u16		type;
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	spin_lock(&priv->lock);

1121 1122 1123
	host_int = inw(dev->base_addr + TLAN_HOST_INT);
	type = (host_int & TLAN_HI_IT_MASK) >> 2;
	if (type) {
1124 1125
		u32	ack;
		u32	host_cmd;
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1127 1128
		outw(host_int, dev->base_addr + TLAN_HOST_INT);
		ack = tlan_int_vector[type](dev, host_int);
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1130 1131 1132
		if (ack) {
			host_cmd = TLAN_HC_ACK | ack | (type << 18);
			outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1133
		}
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	}

	spin_unlock(&priv->lock);

1138
	return IRQ_RETVAL(type);
1139
}
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1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157
/***************************************************************
 *	tlan_close
 *
 *	Returns:
 *		An error code.
 *	Parms:
 *		dev	The device structure of the device to
 *			close.
 *
 *	This function shuts down the adapter.  It records any
 *	stats, puts the adapter into reset state, deactivates
 *	its time as needed, and	frees the irq it is using.
 *
 **************************************************************/
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1159
static int tlan_close(struct net_device *dev)
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{
1161
	struct tlan_priv *priv = netdev_priv(dev);
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	priv->neg_be_verbose = 0;
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	tlan_stop(dev);
1165

1166 1167 1168
	free_irq(dev->irq, dev);
	tlan_free_lists(dev);
	TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
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	return 0;

1172
}
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1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190
/***************************************************************
 *	tlan_get_stats
 *
 *	Returns:
 *		A pointer to the device's statistics structure.
 *	Parms:
 *		dev	The device structure to return the
 *			stats for.
 *
 *	This function updates the devices statistics by reading
 *	the TLAN chip's onboard registers.  Then it returns the
 *	address of the statistics structure.
 *
 **************************************************************/
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1192
static struct net_device_stats *tlan_get_stats(struct net_device *dev)
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{
1194
	struct tlan_priv	*priv = netdev_priv(dev);
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	int i;

	/* Should only read stats if open ? */
1198
	tlan_read_and_clear_stats(dev, TLAN_RECORD);
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1200 1201 1202 1203 1204 1205 1206
	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
		 priv->rx_eoc_count);
	TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
		 priv->tx_busy_count);
	if (debug & TLAN_DEBUG_GNRL) {
		tlan_print_dio(dev->base_addr);
		tlan_phy_print(dev);
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	}
1208 1209 1210 1211 1212
	if (debug & TLAN_DEBUG_LIST) {
		for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
			tlan_print_list(priv->rx_list + i, "RX", i);
		for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
			tlan_print_list(priv->tx_list + i, "TX", i);
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	}
1214

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	return &dev->stats;
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1216

1217
}
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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240
/***************************************************************
 *	tlan_set_multicast_list
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	The device structure to set the
 *			multicast list for.
 *
 *	This function sets the TLAN adaptor to various receive
 *	modes.  If the IFF_PROMISC flag is set, promiscuous
 *	mode is acitviated.  Otherwise,	promiscuous mode is
 *	turned off.  If the IFF_ALLMULTI flag is set, then
 *	the hash table is set to receive all group addresses.
 *	Otherwise, the first three multicast addresses are
 *	stored in AREG_1-3, and the rest are selected via the
 *	hash table, as necessary.
 *
 **************************************************************/
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1242
static void tlan_set_multicast_list(struct net_device *dev)
1243
{
1244
	struct netdev_hw_addr *ha;
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	u32			hash1 = 0;
	u32			hash2 = 0;
	int			i;
	u32			offset;
	u8			tmp;

1251 1252 1253 1254
	if (dev->flags & IFF_PROMISC) {
		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
		tlan_dio_write8(dev->base_addr,
				TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
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	} else {
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265
		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
		tlan_dio_write8(dev->base_addr,
				TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
		if (dev->flags & IFF_ALLMULTI) {
			for (i = 0; i < 3; i++)
				tlan_set_mac(dev, i + 1, NULL);
			tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
					 0xffffffff);
			tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
					 0xffffffff);
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		} else {
1267
			i = 0;
1268
			netdev_for_each_mc_addr(ha, dev) {
1269 1270
				if (i < 3) {
					tlan_set_mac(dev, i + 1,
1271
						     (char *) &ha->addr);
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				} else {
1273 1274 1275 1276
					offset =
						tlan_hash_func((u8 *)&ha->addr);
					if (offset < 32)
						hash1 |= (1 << offset);
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					else
1278
						hash2 |= (1 << (offset - 32));
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				}
1280
				i++;
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			}
1282 1283 1284 1285
			for ( ; i < 3; i++)
				tlan_set_mac(dev, i + 1, NULL);
			tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
			tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
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		}
	}

1289
}
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1290 1291 1292 1293 1294 1295



/*****************************************************************************
******************************************************************************

1296
ThunderLAN driver interrupt vectors and table
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1298 1299 1300
please see chap. 4, "Interrupt Handling" of the "ThunderLAN
Programmer's Guide" for more informations on handling interrupts
generated by TLAN based adapters.
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******************************************************************************
*****************************************************************************/




1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
/***************************************************************
 *	tlan_handle_tx_eof
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This function handles Tx EOF interrupts which are raised
 *	by the adapter when it has completed sending the
 *	contents of a buffer.  If detemines which list/buffer
 *	was completed and resets it.  If the buffer was the last
 *	in the channel (EOC), then the function checks to see if
 *	another buffer is ready to send, and if so, sends a Tx
 *	Go command.  Finally, the driver activates/continues the
 *	activity LED.
 *
 **************************************************************/

static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
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1331
{
1332
	struct tlan_priv	*priv = netdev_priv(dev);
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1333
	int		eoc = 0;
1334
	struct tlan_list	*head_list;
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	dma_addr_t	head_list_phys;
	u32		ack = 0;
1337
	u16		tmp_c_stat;
1338

1339 1340 1341 1342
	TLAN_DBG(TLAN_DEBUG_TX,
		 "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
		 priv->tx_head, priv->tx_tail);
	head_list = priv->tx_list + priv->tx_head;
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1344 1345 1346
	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
	       && (ack < 255)) {
		struct sk_buff *skb = tlan_get_skb(head_list);
1347

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		ack++;
1349
		pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1350 1351 1352 1353 1354 1355
				 max(skb->len,
				     (unsigned int)TLAN_MIN_FRAME_SIZE),
				 PCI_DMA_TODEVICE);
		dev_kfree_skb_any(skb);
		head_list->buffer[8].address = 0;
		head_list->buffer[9].address = 0;
1356

1357
		if (tmp_c_stat & TLAN_CSTAT_EOC)
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1358
			eoc = 1;
1359

1360
		dev->stats.tx_bytes += head_list->frame_size;
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1361

1362
		head_list->c_stat = TLAN_CSTAT_UNUSED;
1363
		netif_start_queue(dev);
1364 1365
		CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
		head_list = priv->tx_list + priv->tx_head;
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	}

	if (!ack)
1369 1370
		netdev_info(dev,
			    "Received interrupt for uncompleted TX frame\n");
1371 1372 1373 1374 1375 1376 1377 1378

	if (eoc) {
		TLAN_DBG(TLAN_DEBUG_TX,
			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
			 priv->tx_head, priv->tx_tail);
		head_list = priv->tx_list + priv->tx_head;
		head_list_phys = priv->tx_list_dma
			+ sizeof(struct tlan_list)*priv->tx_head;
1379 1380
		if ((head_list->c_stat & TLAN_CSTAT_READY)
		    == TLAN_CSTAT_READY) {
1381
			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
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1382 1383
			ack |= TLAN_HC_GO;
		} else {
1384
			priv->tx_in_progress = 0;
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		}
	}
1387

1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
		tlan_dio_write8(dev->base_addr,
				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
		if (priv->timer.function == NULL) {
			priv->timer.function = tlan_timer;
			priv->timer.data = (unsigned long) dev;
			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
			priv->timer_set_at = jiffies;
			priv->timer_type = TLAN_TIMER_ACTIVITY;
			add_timer(&priv->timer);
		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
			priv->timer_set_at = jiffies;
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1400 1401 1402 1403 1404
		}
	}

	return ack;

1405
}
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1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425
/***************************************************************
 *	TLan_HandleStatOverflow
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This function handles the Statistics Overflow interrupt
 *	which means that one or more of the TLAN statistics
 *	registers has reached 1/2 capacity and needs to be read.
 *
 **************************************************************/
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1427
static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
L
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1428
{
1429
	tlan_read_and_clear_stats(dev, TLAN_RECORD);
L
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1430 1431 1432

	return 1;

1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463
}




/***************************************************************
 *	TLan_HandleRxEOF
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This function handles the Rx EOF interrupt which
 *	indicates a frame has been received by the adapter from
 *	the net and the frame has been transferred to memory.
 *	The function determines the bounce buffer the frame has
 *	been loaded into, creates a new sk_buff big enough to
 *	hold the frame, and sends it to protocol stack.  It
 *	then resets the used buffer and appends it to the end
 *	of the list.  If the frame was the last in the Rx
 *	channel (EOC), the function restarts the receive channel
 *	by sending an Rx Go command to the adapter.  Then it
 *	activates/continues the activity LED.
 *
 **************************************************************/

static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
L
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1464
{
1465
	struct tlan_priv	*priv = netdev_priv(dev);
L
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1466 1467
	u32		ack = 0;
	int		eoc = 0;
1468
	struct tlan_list	*head_list;
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1469
	struct sk_buff	*skb;
1470 1471
	struct tlan_list	*tail_list;
	u16		tmp_c_stat;
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1472 1473
	dma_addr_t	head_list_phys;

1474 1475 1476 1477 1478
	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
		 priv->rx_head, priv->rx_tail);
	head_list = priv->rx_list + priv->rx_head;
	head_list_phys =
		priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1479

1480 1481 1482 1483
	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
	       && (ack < 255)) {
		dma_addr_t frame_dma = head_list->buffer[0].address;
		u32 frame_size = head_list->frame_size;
1484 1485
		struct sk_buff *new_skb;

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		ack++;
1487
		if (tmp_c_stat & TLAN_CSTAT_EOC)
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			eoc = 1;
1489

1490 1491
		new_skb = netdev_alloc_skb_ip_align(dev,
						    TLAN_MAX_FRAME_SIZE + 5);
1492
		if (!new_skb)
1493
			goto drop_and_reuse;
1494

1495 1496
		skb = tlan_get_skb(head_list);
		pci_unmap_single(priv->pci_dev, frame_dma,
1497
				 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1498
		skb_put(skb, frame_size);
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1500
		dev->stats.rx_bytes += frame_size;
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1502 1503
		skb->protocol = eth_type_trans(skb, dev);
		netif_rx(skb);
1504

1505 1506 1507
		head_list->buffer[0].address =
			pci_map_single(priv->pci_dev, new_skb->data,
				       TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
S
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1508

1509
		tlan_store_skb(head_list, new_skb);
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1510
drop_and_reuse:
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1511
		head_list->forward = 0;
1512 1513
		head_list->c_stat = 0;
		tail_list = priv->rx_list + priv->rx_tail;
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1514 1515
		tail_list->forward = head_list_phys;

1516 1517 1518 1519 1520
		CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
		CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
		head_list = priv->rx_list + priv->rx_head;
		head_list_phys = priv->rx_list_dma
			+ sizeof(struct tlan_list)*priv->rx_head;
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1521 1522 1523
	}

	if (!ack)
1524 1525
		netdev_info(dev,
			    "Received interrupt for uncompleted RX frame\n");
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535


	if (eoc) {
		TLAN_DBG(TLAN_DEBUG_RX,
			 "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
			 priv->rx_head, priv->rx_tail);
		head_list = priv->rx_list + priv->rx_head;
		head_list_phys = priv->rx_list_dma
			+ sizeof(struct tlan_list)*priv->rx_head;
		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
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1536
		ack |= TLAN_HC_GO | TLAN_HC_RT;
1537
		priv->rx_eoc_count++;
L
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1538 1539
	}

1540 1541 1542 1543 1544
	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
		tlan_dio_write8(dev->base_addr,
				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
		if (priv->timer.function == NULL)  {
			priv->timer.function = tlan_timer;
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			priv->timer.data = (unsigned long) dev;
			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1547 1548
			priv->timer_set_at = jiffies;
			priv->timer_type = TLAN_TIMER_ACTIVITY;
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1549
			add_timer(&priv->timer);
1550 1551
		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
			priv->timer_set_at = jiffies;
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1552 1553 1554 1555 1556
		}
	}

	return ack;

1557
}
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1558 1559 1560 1561




1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577
/***************************************************************
 *	tlan_handle_dummy
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This function handles the Dummy interrupt, which is
 *	raised whenever a test interrupt is generated by setting
 *	the Req_Int bit of HOST_CMD to 1.
 *
 **************************************************************/
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1579
static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
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{
1581
	netdev_info(dev, "Test interrupt\n");
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	return 1;

1584
}
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1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607
/***************************************************************
 *	tlan_handle_tx_eoc
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This driver is structured to determine EOC occurrences by
 *	reading the CSTAT member of the list structure.  Tx EOC
 *	interrupts are disabled via the DIO INTDIS register.
 *	However, TLAN chips before revision 3.0 didn't have this
 *	functionality, so process EOC events if this is the
 *	case.
 *
 **************************************************************/
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1609
static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
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{
1611 1612
	struct tlan_priv	*priv = netdev_priv(dev);
	struct tlan_list		*head_list;
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	dma_addr_t		head_list_phys;
	u32			ack = 1;
1615

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	host_int = 0;
1617 1618 1619 1620 1621 1622 1623
	if (priv->tlan_rev < 0x30) {
		TLAN_DBG(TLAN_DEBUG_TX,
			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
			 priv->tx_head, priv->tx_tail);
		head_list = priv->tx_list + priv->tx_head;
		head_list_phys = priv->tx_list_dma
			+ sizeof(struct tlan_list)*priv->tx_head;
1624 1625
		if ((head_list->c_stat & TLAN_CSTAT_READY)
		    == TLAN_CSTAT_READY) {
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			netif_stop_queue(dev);
1627
			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
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1628 1629
			ack |= TLAN_HC_GO;
		} else {
1630
			priv->tx_in_progress = 0;
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		}
	}

	return ack;

1636
}
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1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659
/***************************************************************
 *	tlan_handle_status_check
 *
 *	Returns:
 *		0 if Adapter check, 1 if Network Status check.
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This function handles Adapter Check/Network Status
 *	interrupts generated by the adapter.  It checks the
 *	vector in the HOST_INT register to determine if it is
 *	an Adapter Check interrupt.  If so, it resets the
 *	adapter.  Otherwise it clears the status registers
 *	and services the PHY.
 *
 **************************************************************/
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1661
static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1662
{
1663
	struct tlan_priv	*priv = netdev_priv(dev);
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	u32		ack;
	u32		error;
	u8		net_sts;
	u32		phy;
	u16		tlphy_ctl;
	u16		tlphy_sts;
1670

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	ack = 1;
1672 1673 1674
	if (host_int & TLAN_HI_IV_MASK) {
		netif_stop_queue(dev);
		error = inl(dev->base_addr + TLAN_CH_PARM);
1675
		netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1676 1677
		tlan_read_and_clear_stats(dev, TLAN_RECORD);
		outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
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		schedule_work(&priv->tlan_tqueue);

		netif_wake_queue(dev);
		ack = 0;
	} else {
1684 1685 1686 1687 1688 1689 1690 1691
		TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
		phy = priv->phy[priv->phy_num];

		net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
		if (net_sts) {
			tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
			TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
				 dev->name, (unsigned) net_sts);
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		}
1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705
		if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
			tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
			tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
			if (!(tlphy_sts & TLAN_TS_POLOK) &&
			    !(tlphy_ctl & TLAN_TC_SWAPOL)) {
				tlphy_ctl |= TLAN_TC_SWAPOL;
				tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
						   tlphy_ctl);
			} else if ((tlphy_sts & TLAN_TS_POLOK) &&
				   (tlphy_ctl & TLAN_TC_SWAPOL)) {
				tlphy_ctl &= ~TLAN_TC_SWAPOL;
				tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
						   tlphy_ctl);
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			}
1707 1708 1709

			if (debug)
				tlan_phy_print(dev);
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		}
	}

	return ack;

1715
}
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1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738
/***************************************************************
 *	tlan_handle_rx_eoc
 *
 *	Returns:
 *		1
 *	Parms:
 *		dev		Device assigned the IRQ that was
 *				raised.
 *		host_int	The contents of the HOST_INT
 *				port.
 *
 *	This driver is structured to determine EOC occurrences by
 *	reading the CSTAT member of the list structure.  Rx EOC
 *	interrupts are disabled via the DIO INTDIS register.
 *	However, TLAN chips before revision 3.0 didn't have this
 *	CSTAT member or a INTDIS register, so if this chip is
 *	pre-3.0, process EOC interrupts normally.
 *
 **************************************************************/
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1740
static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
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1741
{
1742
	struct tlan_priv	*priv = netdev_priv(dev);
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	dma_addr_t	head_list_phys;
	u32		ack = 1;

1746 1747 1748 1749 1750 1751 1752
	if (priv->tlan_rev < 0x30) {
		TLAN_DBG(TLAN_DEBUG_RX,
			 "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
			 priv->rx_head, priv->rx_tail);
		head_list_phys = priv->rx_list_dma
			+ sizeof(struct tlan_list)*priv->rx_head;
		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
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		ack |= TLAN_HC_GO | TLAN_HC_RT;
1754
		priv->rx_eoc_count++;
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1755 1756 1757 1758
	}

	return ack;

1759
}
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/*****************************************************************************
******************************************************************************

1767
ThunderLAN driver timer function
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******************************************************************************
*****************************************************************************/


1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803
/***************************************************************
 *	tlan_timer
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		data	A value given to add timer when
 *			add_timer was called.
 *
 *	This function handles timed functionality for the
 *	TLAN driver.  The two current timer uses are for
 *	delaying for autonegotionation and driving the ACT LED.
 *	-	Autonegotiation requires being allowed about
 *		2 1/2 seconds before attempting to transmit a
 *		packet.  It would be a very bad thing to hang
 *		the kernel this long, so the driver doesn't
 *		allow transmission 'til after this time, for
 *		certain PHYs.  It would be much nicer if all
 *		PHYs were interrupt-capable like the internal
 *		PHY.
 *	-	The ACT LED, which shows adapter activity, is
 *		driven by the driver, and so must be left on
 *		for a short period to power up the LED so it
 *		can be seen.  This delay can be changed by
 *		changing the TLAN_TIMER_ACT_DELAY in tlan.h,
 *		if desired.  100 ms  produces a slightly
 *		sluggish response.
 *
 **************************************************************/

static void tlan_timer(unsigned long data)
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{
	struct net_device	*dev = (struct net_device *) data;
1806
	struct tlan_priv	*priv = netdev_priv(dev);
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	u32		elapsed;
	unsigned long	flags = 0;

	priv->timer.function = NULL;

1812
	switch (priv->timer_type) {
1813
#ifdef MONITOR
1814 1815 1816
	case TLAN_TIMER_LINK_BEAT:
		tlan_phy_monitor(dev);
		break;
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#endif
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849
	case TLAN_TIMER_PHY_PDOWN:
		tlan_phy_power_down(dev);
		break;
	case TLAN_TIMER_PHY_PUP:
		tlan_phy_power_up(dev);
		break;
	case TLAN_TIMER_PHY_RESET:
		tlan_phy_reset(dev);
		break;
	case TLAN_TIMER_PHY_START_LINK:
		tlan_phy_start_link(dev);
		break;
	case TLAN_TIMER_PHY_FINISH_AN:
		tlan_phy_finish_auto_neg(dev);
		break;
	case TLAN_TIMER_FINISH_RESET:
		tlan_finish_reset(dev);
		break;
	case TLAN_TIMER_ACTIVITY:
		spin_lock_irqsave(&priv->lock, flags);
		if (priv->timer.function == NULL) {
			elapsed = jiffies - priv->timer_set_at;
			if (elapsed >= TLAN_TIMER_ACT_DELAY) {
				tlan_dio_write8(dev->base_addr,
						TLAN_LED_REG, TLAN_LED_LINK);
			} else  {
				priv->timer.function = tlan_timer;
				priv->timer.expires = priv->timer_set_at
					+ TLAN_TIMER_ACT_DELAY;
				spin_unlock_irqrestore(&priv->lock, flags);
				add_timer(&priv->timer);
				break;
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			}
1851 1852 1853 1854 1855
		}
		spin_unlock_irqrestore(&priv->lock, flags);
		break;
	default:
		break;
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	}

1858
}
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1859 1860 1861 1862 1863 1864 1865




/*****************************************************************************
******************************************************************************

1866
ThunderLAN driver adapter related routines
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******************************************************************************
*****************************************************************************/


1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886
/***************************************************************
 *	tlan_reset_lists
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	The device structure with the list
 *			stuctures to be reset.
 *
 *	This routine sets the variables associated with managing
 *	the TLAN lists to their initial values.
 *
 **************************************************************/

static void tlan_reset_lists(struct net_device *dev)
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1887
{
1888
	struct tlan_priv *priv = netdev_priv(dev);
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1889
	int		i;
1890
	struct tlan_list	*list;
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1891 1892 1893
	dma_addr_t	list_phys;
	struct sk_buff	*skb;

1894 1895 1896 1897 1898
	priv->tx_head = 0;
	priv->tx_tail = 0;
	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
		list = priv->tx_list + i;
		list->c_stat = TLAN_CSTAT_UNUSED;
1899
		list->buffer[0].address = 0;
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1900 1901 1902 1903 1904 1905
		list->buffer[2].count = 0;
		list->buffer[2].address = 0;
		list->buffer[8].address = 0;
		list->buffer[9].address = 0;
	}

1906 1907 1908 1909 1910 1911 1912
	priv->rx_head = 0;
	priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
		list = priv->rx_list + i;
		list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
		list->c_stat = TLAN_CSTAT_READY;
		list->frame_size = TLAN_MAX_FRAME_SIZE;
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1913
		list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1914
		skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1915
		if (!skb)
1916 1917
			break;

1918
		list->buffer[0].address = pci_map_single(priv->pci_dev,
1919 1920 1921
							 skb->data,
							 TLAN_MAX_FRAME_SIZE,
							 PCI_DMA_FROMDEVICE);
1922
		tlan_store_skb(list, skb);
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1923 1924
		list->buffer[1].count = 0;
		list->buffer[1].address = 0;
1925
		list->forward = list_phys + sizeof(struct tlan_list);
1926 1927 1928 1929
	}

	/* in case ran out of memory early, clear bits */
	while (i < TLAN_NUM_RX_LISTS) {
1930
		tlan_store_skb(priv->rx_list + i, NULL);
1931
		++i;
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1932
	}
1933
	list->forward = 0;
L
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1934

1935
}
L
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1936 1937


1938
static void tlan_free_lists(struct net_device *dev)
L
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1939
{
1940
	struct tlan_priv *priv = netdev_priv(dev);
L
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1941
	int		i;
1942
	struct tlan_list	*list;
L
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1943 1944
	struct sk_buff	*skb;

1945 1946 1947 1948
	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
		list = priv->tx_list + i;
		skb = tlan_get_skb(list);
		if (skb) {
1949
			pci_unmap_single(
1950
				priv->pci_dev,
1951 1952 1953 1954
				list->buffer[0].address,
				max(skb->len,
				    (unsigned int)TLAN_MIN_FRAME_SIZE),
				PCI_DMA_TODEVICE);
1955
			dev_kfree_skb_any(skb);
1956 1957
			list->buffer[8].address = 0;
			list->buffer[9].address = 0;
L
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1958
		}
1959
	}
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1960

1961 1962 1963 1964 1965
	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
		list = priv->rx_list + i;
		skb = tlan_get_skb(list);
		if (skb) {
			pci_unmap_single(priv->pci_dev,
1966 1967 1968
					 list->buffer[0].address,
					 TLAN_MAX_FRAME_SIZE,
					 PCI_DMA_FROMDEVICE);
1969
			dev_kfree_skb_any(skb);
1970 1971
			list->buffer[8].address = 0;
			list->buffer[9].address = 0;
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1972 1973
		}
	}
1974
}
L
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1975 1976 1977 1978




1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991
/***************************************************************
 *	tlan_print_dio
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		io_base		Base IO port of the device of
 *				which to print DIO registers.
 *
 *	This function prints out all the internal (DIO)
 *	registers of a TLAN chip.
 *
 **************************************************************/
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1992

1993
static void tlan_print_dio(u16 io_base)
L
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1994 1995 1996 1997
{
	u32 data0, data1;
	int	i;

1998 1999 2000
	pr_info("Contents of internal registers for io base 0x%04hx\n",
		io_base);
	pr_info("Off.  +0        +4\n");
2001 2002 2003
	for (i = 0; i < 0x4C; i += 8) {
		data0 = tlan_dio_read32(io_base, i);
		data1 = tlan_dio_read32(io_base, i + 0x4);
2004
		pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
L
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2005 2006
	}

2007
}
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2008 2009 2010 2011




2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
/***************************************************************
 *	TLan_PrintList
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		list	A pointer to the struct tlan_list structure to
 *			be printed.
 *		type	A string to designate type of list,
 *			"Rx" or "Tx".
 *		num	The index of the list.
 *
 *	This function prints out the contents of the list
 *	pointed to by the list parameter.
 *
 **************************************************************/
L
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2028

2029
static void tlan_print_list(struct tlan_list *list, char *type, int num)
L
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2030 2031 2032
{
	int i;

2033 2034 2035 2036
	pr_info("%s List %d at %p\n", type, num, list);
	pr_info("   Forward    = 0x%08x\n",  list->forward);
	pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
	pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2037 2038
	/* for (i = 0; i < 10; i++) { */
	for (i = 0; i < 2; i++) {
2039 2040
		pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
			i, list->buffer[i].count, list->buffer[i].address);
L
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2041 2042
	}

2043
}
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2044 2045 2046 2047




2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064
/***************************************************************
 *	tlan_read_and_clear_stats
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	Pointer to device structure of adapter
 *			to which to read stats.
 *		record	Flag indicating whether to add
 *
 *	This functions reads all the internal status registers
 *	of the TLAN chip, which clears them as a side effect.
 *	It then either adds the values to the device's status
 *	struct, or discards them, depending on whether record
 *	is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
 *
 **************************************************************/
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2066
static void tlan_read_and_clear_stats(struct net_device *dev, int record)
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2067 2068 2069 2070 2071 2072 2073
{
	u32		tx_good, tx_under;
	u32		rx_good, rx_over;
	u32		def_tx, crc, code;
	u32		multi_col, single_col;
	u32		excess_col, late_col, loss;

2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103
	outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
	tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
	tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);

	outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
	rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
	rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);

	outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
	def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
	def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
	crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
	code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);

	outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
	multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
	multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
	single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
	single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;

	outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
	excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
	late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
	loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);

	if (record) {
S
Stephen Hemminger 已提交
2104 2105 2106 2107
		dev->stats.rx_packets += rx_good;
		dev->stats.rx_errors  += rx_over + crc + code;
		dev->stats.tx_packets += tx_good;
		dev->stats.tx_errors  += tx_under + loss;
2108 2109
		dev->stats.collisions += multi_col
			+ single_col + excess_col + late_col;
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2110 2111 2112 2113 2114 2115 2116

		dev->stats.rx_over_errors    += rx_over;
		dev->stats.rx_crc_errors     += crc;
		dev->stats.rx_frame_errors   += code;

		dev->stats.tx_aborted_errors += tx_under;
		dev->stats.tx_carrier_errors += loss;
L
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2117
	}
2118

2119
}
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2120 2121 2122 2123




2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139
/***************************************************************
 *	TLan_Reset
 *
 *	Returns:
 *		0
 *	Parms:
 *		dev	Pointer to device structure of adapter
 *			to be reset.
 *
 *	This function resets the adapter and it's physical
 *	device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
 *	Programmer's Guide" for details.  The routine tries to
 *	implement what is detailed there, though adjustments
 *	have been made.
 *
 **************************************************************/
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2140

2141
static void
2142
tlan_reset_adapter(struct net_device *dev)
L
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2143
{
2144
	struct tlan_priv	*priv = netdev_priv(dev);
L
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2145 2146 2147 2148 2149
	int		i;
	u32		addr;
	u32		data;
	u8		data8;

2150 2151
	priv->tlan_full_duplex = false;
	priv->phy_online = 0;
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2152 2153 2154 2155 2156 2157 2158
	netif_carrier_off(dev);

/*  1.	Assert reset bit. */

	data = inl(dev->base_addr + TLAN_HOST_CMD);
	data |= TLAN_HC_AD_RST;
	outl(data, dev->base_addr + TLAN_HOST_CMD);
2159

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2160 2161
	udelay(1000);

2162
/*  2.	Turn off interrupts. (Probably isn't necessary) */
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2163 2164 2165 2166 2167 2168 2169

	data = inl(dev->base_addr + TLAN_HOST_CMD);
	data |= TLAN_HC_INT_OFF;
	outl(data, dev->base_addr + TLAN_HOST_CMD);

/*  3.	Clear AREGs and HASHs. */

2170 2171
	for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
		tlan_dio_write32(dev->base_addr, (u16) i, 0);
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2172 2173 2174 2175

/*  4.	Setup NetConfig register. */

	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2176
	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
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2177 2178 2179

/*  5.	Load Ld_Tmr and Ld_Thr in HOST_CMD. */

2180 2181
	outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
	outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
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2182 2183 2184

/*  6.	Unreset the MII by setting NMRST (in NetSio) to 1. */

2185
	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
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2186
	addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2187
	tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
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2188 2189 2190

/*  7.	Setup the remaining registers. */

2191
	if (priv->tlan_rev >= 0x30) {
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2192
		data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2193
		tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
L
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2194
	}
2195
	tlan_phy_detect(dev);
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2196
	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2197

2198
	if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
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2199
		data |= TLAN_NET_CFG_BIT;
2200 2201 2202 2203 2204
		if (priv->aui == 1) {
			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
		} else if (priv->duplex == TLAN_DUPLEX_FULL) {
			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
			priv->tlan_full_duplex = true;
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2205
		} else {
2206
			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
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2207 2208 2209
		}
	}

2210
	if (priv->phy_num == 0)
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2211
		data |= TLAN_NET_CFG_PHY_EN;
2212
	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
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2213

2214 2215 2216 2217
	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
		tlan_finish_reset(dev);
	else
		tlan_phy_power_down(dev);
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2218

2219
}
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2220 2221 2222 2223




2224
static void
2225
tlan_finish_reset(struct net_device *dev)
L
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2226
{
2227
	struct tlan_priv	*priv = netdev_priv(dev);
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2228 2229 2230 2231 2232 2233
	u8		data;
	u32		phy;
	u8		sio;
	u16		status;
	u16		partner;
	u16		tlphy_ctl;
2234
	u16		tlphy_par;
L
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2235
	u16		tlphy_id1, tlphy_id2;
2236
	int		i;
L
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2237

2238
	phy = priv->phy[priv->phy_num];
L
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2239 2240

	data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2241
	if (priv->tlan_full_duplex)
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2242
		data |= TLAN_NET_CMD_DUPLEX;
2243
	tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2244
	data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2245
	if (priv->phy_num == 0)
2246
		data |= TLAN_NET_MASK_MASK7;
2247 2248 2249 2250
	tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
	tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
	tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
	tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2251

2252 2253
	if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
	    (priv->aui)) {
L
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2254
		status = MII_GS_LINK;
2255
		netdev_info(dev, "Link forced\n");
L
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2256
	} else {
2257 2258 2259 2260 2261 2262 2263 2264 2265 2266
		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
		udelay(1000);
		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
		if ((status & MII_GS_LINK) &&
		    /* We only support link info on Nat.Sem. PHY's */
		    (tlphy_id1 == NAT_SEM_ID1) &&
		    (tlphy_id2 == NAT_SEM_ID2)) {
			tlan_mii_read_reg(dev, phy, MII_AN_LPA, &partner);
			tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, &tlphy_par);

2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281
			netdev_info(dev,
				    "Link active with %s %uMbps %s-Duplex\n",
				    !(tlphy_par & TLAN_PHY_AN_EN_STAT)
				    ? "forced" : "Autonegotiation enabled,",
				    tlphy_par & TLAN_PHY_SPEED_100
				    ? 100 : 10,
				    tlphy_par & TLAN_PHY_DUPLEX_FULL
				    ? "Full" : "Half");

			if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
				netdev_info(dev, "Partner capability:");
				for (i = 5; i < 10; i++)
					if (partner & (1 << i))
						pr_cont(" %s", media[i-5]);
				pr_cont("\n");
L
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2282 2283
			}

2284 2285
			tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
					TLAN_LED_LINK);
2286
#ifdef MONITOR
L
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2287
			/* We have link beat..for now anyway */
2288 2289 2290
			priv->link = 1;
			/*Enabling link beat monitoring */
			tlan_set_timer(dev, (10*HZ), TLAN_TIMER_LINK_BEAT);
2291
#endif
L
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2292
		} else if (status & MII_GS_LINK)  {
2293
			netdev_info(dev, "Link active\n");
2294 2295
			tlan_dio_write8(dev->base_addr, TLAN_LED_REG,
					TLAN_LED_LINK);
L
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2296 2297 2298
		}
	}

2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316
	if (priv->phy_num == 0) {
		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
		tlphy_ctl |= TLAN_TC_INTEN;
		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
		sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
		sio |= TLAN_NET_SIO_MINTEN;
		tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
	}

	if (status & MII_GS_LINK) {
		tlan_set_mac(dev, 0, dev->dev_addr);
		priv->phy_online = 1;
		outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
		if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
			outb((TLAN_HC_REQ_INT >> 8),
			     dev->base_addr + TLAN_HOST_CMD + 1);
		outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
		outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
L
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2317 2318
		netif_carrier_on(dev);
	} else {
2319
		netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2320
		tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
L
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2321 2322
		return;
	}
2323
	tlan_set_multicast_list(dev);
L
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2324

2325
}
L
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2326 2327 2328 2329




2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349
/***************************************************************
 *	tlan_set_mac
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	Pointer to device structure of adapter
 *			on which to change the AREG.
 *		areg	The AREG to set the address in (0 - 3).
 *		mac	A pointer to an array of chars.  Each
 *			element stores one byte of the address.
 *			IE, it isn't in ascii.
 *
 *	This function transfers a MAC address to one of the
 *	TLAN AREGs (address registers).  The TLAN chip locks
 *	the register on writing to offset 0 and unlocks the
 *	register after writing to offset 5.  If NULL is passed
 *	in mac, then the AREG is filled with 0's.
 *
 **************************************************************/
L
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2350

2351
static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
L
Linus Torvalds 已提交
2352 2353
{
	int i;
2354

L
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2355 2356
	areg *= 6;

2357 2358 2359 2360
	if (mac != NULL) {
		for (i = 0; i < 6; i++)
			tlan_dio_write8(dev->base_addr,
					TLAN_AREG_0 + areg + i, mac[i]);
L
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2361
	} else {
2362 2363 2364
		for (i = 0; i < 6; i++)
			tlan_dio_write8(dev->base_addr,
					TLAN_AREG_0 + areg + i, 0);
L
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2365 2366
	}

2367
}
L
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2368 2369 2370 2371 2372 2373 2374




/*****************************************************************************
******************************************************************************

2375
ThunderLAN driver PHY layer routines
L
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2376 2377 2378 2379 2380 2381

******************************************************************************
*****************************************************************************/



2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393
/*********************************************************************
 *	tlan_phy_print
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	A pointer to the device structure of the
 *			TLAN device having the PHYs to be detailed.
 *
 *	This function prints the registers a PHY (aka transceiver).
 *
 ********************************************************************/
L
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2394

2395
static void tlan_phy_print(struct net_device *dev)
L
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2396
{
2397
	struct tlan_priv *priv = netdev_priv(dev);
L
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2398 2399
	u16 i, data0, data1, data2, data3, phy;

2400 2401 2402
	phy = priv->phy[priv->phy_num];

	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2403
		netdev_info(dev, "Unmanaged PHY\n");
2404
	} else if (phy <= TLAN_PHY_MAX_ADDR) {
2405 2406
		netdev_info(dev, "PHY 0x%02x\n", phy);
		pr_info("   Off.  +0     +1     +2     +3\n");
2407 2408 2409 2410 2411
		for (i = 0; i < 0x20; i += 4) {
			tlan_mii_read_reg(dev, phy, i, &data0);
			tlan_mii_read_reg(dev, phy, i + 1, &data1);
			tlan_mii_read_reg(dev, phy, i + 2, &data2);
			tlan_mii_read_reg(dev, phy, i + 3, &data3);
2412 2413
			pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
				i, data0, data1, data2, data3);
L
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2414 2415
		}
	} else {
2416
		netdev_info(dev, "Invalid PHY\n");
L
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2417 2418
	}

2419
}
L
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2420 2421 2422 2423




2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439
/*********************************************************************
 *	tlan_phy_detect
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev	A pointer to the device structure of the adapter
 *			for which the PHY needs determined.
 *
 *	So far I've found that adapters which have external PHYs
 *	may also use the internal PHY for part of the functionality.
 *	(eg, AUI/Thinnet).  This function finds out if this TLAN
 *	chip has an internal PHY, and then finds the first external
 *	PHY (starting from address 0) if it exists).
 *
 ********************************************************************/
L
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2440

2441
static void tlan_phy_detect(struct net_device *dev)
L
Linus Torvalds 已提交
2442
{
2443
	struct tlan_priv *priv = netdev_priv(dev);
L
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2444 2445 2446 2447 2448
	u16		control;
	u16		hi;
	u16		lo;
	u32		phy;

2449 2450
	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
		priv->phy_num = 0xffff;
L
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2451 2452 2453
		return;
	}

2454
	tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2455

2456
	if (hi != 0xffff)
L
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2457
		priv->phy[0] = TLAN_PHY_MAX_ADDR;
2458
	else
L
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2459 2460 2461
		priv->phy[0] = TLAN_PHY_NONE;

	priv->phy[1] = TLAN_PHY_NONE;
2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472
	for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
		tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
		tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
		if ((control != 0xffff) ||
		    (hi != 0xffff) || (lo != 0xffff)) {
			TLAN_DBG(TLAN_DEBUG_GNRL,
				 "PHY found at %02x %04x %04x %04x\n",
				 phy, control, hi, lo);
			if ((priv->phy[1] == TLAN_PHY_NONE) &&
			    (phy != TLAN_PHY_MAX_ADDR)) {
L
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2473 2474 2475 2476 2477
				priv->phy[1] = phy;
			}
		}
	}

2478 2479 2480 2481 2482
	if (priv->phy[1] != TLAN_PHY_NONE)
		priv->phy_num = 1;
	else if (priv->phy[0] != TLAN_PHY_NONE)
		priv->phy_num = 0;
	else
2483
		netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
L
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2484

2485
}
L
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2486 2487 2488 2489




2490
static void tlan_phy_power_down(struct net_device *dev)
L
Linus Torvalds 已提交
2491
{
2492
	struct tlan_priv	*priv = netdev_priv(dev);
L
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2493 2494
	u16		value;

2495
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
L
Linus Torvalds 已提交
2496
	value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2497 2498 2499 2500 2501 2502 2503
	tlan_mii_sync(dev->base_addr);
	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
	if ((priv->phy_num == 0) &&
	    (priv->phy[1] != TLAN_PHY_NONE) &&
	    (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
		tlan_mii_sync(dev->base_addr);
		tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
L
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2504 2505 2506 2507 2508 2509
	}

	/* Wait for 50 ms and powerup
	 * This is abitrary.  It is intended to make sure the
	 * transceiver settles.
	 */
2510
	tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
L
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2511

2512
}
L
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2513 2514 2515 2516




2517
static void tlan_phy_power_up(struct net_device *dev)
L
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2518
{
2519
	struct tlan_priv	*priv = netdev_priv(dev);
L
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2520 2521
	u16		value;

2522 2523
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
	tlan_mii_sync(dev->base_addr);
L
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2524
	value = MII_GC_LOOPBK;
2525 2526
	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
	tlan_mii_sync(dev->base_addr);
L
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2527 2528 2529 2530
	/* Wait for 500 ms and reset the
	 * transceiver.  The TLAN docs say both 50 ms and
	 * 500 ms, so do the longer, just in case.
	 */
2531
	tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
L
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2532

2533
}
L
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2534 2535 2536 2537




2538
static void tlan_phy_reset(struct net_device *dev)
L
Linus Torvalds 已提交
2539
{
2540
	struct tlan_priv	*priv = netdev_priv(dev);
L
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2541 2542 2543
	u16		phy;
	u16		value;

2544
	phy = priv->phy[priv->phy_num];
L
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2545

M
Masanari Iida 已提交
2546
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2547
	tlan_mii_sync(dev->base_addr);
L
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2548
	value = MII_GC_LOOPBK | MII_GC_RESET;
2549 2550 2551 2552
	tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
	tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
	while (value & MII_GC_RESET)
		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
L
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2553 2554 2555 2556 2557

	/* Wait for 500 ms and initialize.
	 * I don't remember why I wait this long.
	 * I've changed this to 50ms, as it seems long enough.
	 */
2558
	tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
L
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2559

2560
}
L
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2561 2562 2563 2564




2565
static void tlan_phy_start_link(struct net_device *dev)
L
Linus Torvalds 已提交
2566
{
2567
	struct tlan_priv	*priv = netdev_priv(dev);
L
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2568 2569 2570 2571 2572 2573 2574
	u16		ability;
	u16		control;
	u16		data;
	u16		phy;
	u16		status;
	u16		tctl;

2575 2576 2577 2578
	phy = priv->phy[priv->phy_num];
	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
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2580 2581
	if ((status & MII_GS_AUTONEG) &&
	    (!priv->aui)) {
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2582
		ability = status >> 11;
2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596
		if (priv->speed  == TLAN_SPEED_10 &&
		    priv->duplex == TLAN_DUPLEX_HALF) {
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
		} else if (priv->speed == TLAN_SPEED_10 &&
			   priv->duplex == TLAN_DUPLEX_FULL) {
			priv->tlan_full_duplex = true;
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
		} else if (priv->speed == TLAN_SPEED_100 &&
			   priv->duplex == TLAN_DUPLEX_HALF) {
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
		} else if (priv->speed == TLAN_SPEED_100 &&
			   priv->duplex == TLAN_DUPLEX_FULL) {
			priv->tlan_full_duplex = true;
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
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2597
		} else {
2598

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			/* Set Auto-Neg advertisement */
2600 2601
			tlan_mii_write_reg(dev, phy, MII_AN_ADV,
					   (ability << 5) | 1);
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2602
			/* Enablee Auto-Neg */
2603
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
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2604
			/* Restart Auto-Neg */
2605
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
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2606
			/* Wait for 4 sec for autonegotiation
2607 2608 2609 2610
			 * to complete.  The max spec time is less than this
			 * but the card need additional time to start AN.
			 * .5 sec should be plenty extra.
			 */
2611
			netdev_info(dev, "Starting autonegotiation\n");
2612
			tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
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2613 2614
			return;
		}
2615 2616 2617

	}

2618 2619 2620 2621 2622 2623
	if ((priv->aui) && (priv->phy_num != 0)) {
		priv->phy_num = 0;
		data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
			| TLAN_NET_CFG_PHY_EN;
		tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
		tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
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2624
		return;
2625
	} else if (priv->phy_num == 0) {
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2626
		control = 0;
2627 2628 2629
		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
		if (priv->aui) {
			tctl |= TLAN_TC_AUISEL;
2630
		} else {
2631 2632
			tctl &= ~TLAN_TC_AUISEL;
			if (priv->duplex == TLAN_DUPLEX_FULL) {
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2633
				control |= MII_GC_DUPLEX;
2634
				priv->tlan_full_duplex = true;
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2635
			}
2636
			if (priv->speed == TLAN_SPEED_100)
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2637 2638
				control |= MII_GC_SPEEDSEL;
		}
2639 2640
		tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
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2641 2642 2643 2644 2645
	}

	/* Wait for 2 sec to give the transceiver time
	 * to establish link.
	 */
2646
	tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
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2647

2648
}
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2649 2650 2651 2652




2653
static void tlan_phy_finish_auto_neg(struct net_device *dev)
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2654
{
2655
	struct tlan_priv	*priv = netdev_priv(dev);
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2656 2657 2658 2659 2660 2661
	u16		an_adv;
	u16		an_lpa;
	u16		data;
	u16		mode;
	u16		phy;
	u16		status;
2662

2663
	phy = priv->phy[priv->phy_num];
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2664

2665 2666 2667
	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
	udelay(1000);
	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
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2668

2669
	if (!(status & MII_GS_AUTOCMPLT)) {
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2670 2671 2672
		/* Wait for 8 sec to give the process
		 * more time.  Perhaps we should fail after a while.
		 */
2673
		if (!priv->neg_be_verbose++) {
2674 2675 2676 2677
			pr_info("Giving autonegotiation more time.\n");
			pr_info("Please check that your adapter has\n");
			pr_info("been properly connected to a HUB or Switch.\n");
			pr_info("Trying to establish link in the background...\n");
2678 2679
		}
		tlan_set_timer(dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN);
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2680 2681 2682
		return;
	}

2683
	netdev_info(dev, "Autonegotiation complete\n");
2684 2685
	tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
	tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
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2686
	mode = an_adv & an_lpa & 0x03E0;
2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699
	if (mode & 0x0100)
		priv->tlan_full_duplex = true;
	else if (!(mode & 0x0080) && (mode & 0x0040))
		priv->tlan_full_duplex = true;

	if ((!(mode & 0x0180)) &&
	    (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
	    (priv->phy_num != 0)) {
		priv->phy_num = 0;
		data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
			| TLAN_NET_CFG_PHY_EN;
		tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
		tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
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2700 2701 2702
		return;
	}

2703 2704 2705 2706 2707
	if (priv->phy_num == 0) {
		if ((priv->duplex == TLAN_DUPLEX_FULL) ||
		    (an_adv & an_lpa & 0x0040)) {
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
					   MII_GC_AUTOENB | MII_GC_DUPLEX);
2708
			netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
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2709
		} else {
2710 2711
			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
					   MII_GC_AUTOENB);
2712
			netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
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2713 2714 2715 2716 2717
		}
	}

	/* Wait for 100 ms.  No reason in partiticular.
	 */
2718
	tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2719

2720
}
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2721 2722 2723

#ifdef MONITOR

2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742
/*********************************************************************
 *
 *     tlan_phy_monitor
 *
 *     Returns:
 *	      None
 *
 *     Params:
 *	      dev	     The device structure of this device.
 *
 *
 *     This function monitors PHY condition by reading the status
 *     register via the MII bus. This can be used to give info
 *     about link changes (up/down), and possible switch to alternate
 *     media.
 *
 *******************************************************************/

void tlan_phy_monitor(struct net_device *dev)
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2743
{
2744
	struct tlan_priv *priv = netdev_priv(dev);
L
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2745 2746 2747
	u16     phy;
	u16     phy_status;

2748
	phy = priv->phy[priv->phy_num];
L
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2749

2750 2751
	/* Get PHY status register */
	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
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2752

2753 2754 2755 2756 2757 2758 2759 2760 2761
	/* Check if link has been lost */
	if (!(phy_status & MII_GS_LINK)) {
		if (priv->link) {
			priv->link = 0;
			printk(KERN_DEBUG "TLAN: %s has lost link\n",
			       dev->name);
			netif_carrier_off(dev);
			tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
			return;
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2762 2763 2764
		}
	}

2765 2766 2767 2768 2769
	/* Link restablished? */
	if ((phy_status & MII_GS_LINK) && !priv->link) {
		priv->link = 1;
		printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
		       dev->name);
2770
		netif_carrier_on(dev);
2771
	}
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2772 2773

	/* Setup a new monitor */
2774
	tlan_set_timer(dev, (2*HZ), TLAN_TIMER_LINK_BEAT);
2775
}
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2776 2777 2778 2779 2780 2781 2782

#endif /* MONITOR */


/*****************************************************************************
******************************************************************************

2783
ThunderLAN driver MII routines
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2784

2785 2786
these routines are based on the information in chap. 2 of the
"ThunderLAN Programmer's Guide", pp. 15-24.
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2787 2788 2789 2790 2791

******************************************************************************
*****************************************************************************/


2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817
/***************************************************************
 *	tlan_mii_read_reg
 *
 *	Returns:
 *		false	if ack received ok
 *		true	if no ack received or other error
 *
 *	Parms:
 *		dev		The device structure containing
 *				The io address and interrupt count
 *				for this device.
 *		phy		The address of the PHY to be queried.
 *		reg		The register whose contents are to be
 *				retrieved.
 *		val		A pointer to a variable to store the
 *				retrieved value.
 *
 *	This function uses the TLAN's MII bus to retrieve the contents
 *	of a given register on a PHY.  It sends the appropriate info
 *	and then reads the 16-bit register value from the MII bus via
 *	the TLAN SIO register.
 *
 **************************************************************/

static bool
tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
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2818 2819 2820
{
	u8	nack;
	u16	sio, tmp;
2821
	u32	i;
2822
	bool	err;
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2823
	int	minten;
2824
	struct tlan_priv *priv = netdev_priv(dev);
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2825 2826
	unsigned long flags = 0;

2827
	err = false;
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2828 2829
	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2830

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2831 2832 2833
	if (!in_irq())
		spin_lock_irqsave(&priv->lock, flags);

2834
	tlan_mii_sync(dev->base_addr);
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2835

2836 2837 2838
	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
	if (minten)
		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
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2839

2840 2841 2842 2843
	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* read  (10b) */
	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
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2844 2845


2846
	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);	/* change direction */
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2847

2848 2849 2850
	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* clock idle bit */
	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* wait 300ns */
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2851

2852 2853 2854
	nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);	/* check for ACK */
	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);		/* finish ACK */
	if (nack) {					/* no ACK, so fake it */
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2855
		for (i = 0; i < 16; i++) {
2856 2857
			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
L
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2858 2859
		}
		tmp = 0xffff;
2860
		err = true;
L
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2861 2862
	} else {					/* ACK, so read data */
		for (tmp = 0, i = 0x8000; i; i >>= 1) {
2863 2864
			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
			if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
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2865
				tmp |= i;
2866
			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
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2867 2868 2869 2870
		}
	}


2871 2872
	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* idle cycle */
	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
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2873

2874 2875
	if (minten)
		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
L
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2876 2877

	*val = tmp;
2878

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2879 2880 2881 2882 2883
	if (!in_irq())
		spin_unlock_irqrestore(&priv->lock, flags);

	return err;

2884
}
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2885 2886 2887 2888




2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905
/***************************************************************
 *	tlan_mii_send_data
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		base_port	The base IO port of the adapter	in
 *				question.
 *		dev		The address of the PHY to be queried.
 *		data		The value to be placed on the MII bus.
 *		num_bits	The number of bits in data that are to
 *				be placed on the MII bus.
 *
 *	This function sends on sequence of bits on the MII
 *	configuration bus.
 *
 **************************************************************/
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2906

2907
static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
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2908 2909 2910 2911
{
	u16 sio;
	u32 i;

2912
	if (num_bits == 0)
L
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2913 2914
		return;

2915
	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
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2916
	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2917
	tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
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2918

2919 2920 2921 2922 2923
	for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
		if (data & i)
			tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
L
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2924
		else
2925 2926 2927
			tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
L
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2928 2929
	}

2930
}
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2931 2932 2933 2934




2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947
/***************************************************************
 *	TLan_MiiSync
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		base_port	The base IO port of the adapter in
 *				question.
 *
 *	This functions syncs all PHYs in terms of the MII configuration
 *	bus.
 *
 **************************************************************/
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2948

2949
static void tlan_mii_sync(u16 base_port)
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2950 2951 2952 2953
{
	int i;
	u16 sio;

2954
	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
L
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2955 2956
	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;

2957 2958 2959 2960
	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
	for (i = 0; i < 32; i++) {
		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
L
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2961 2962
	}

2963
}
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2964 2965 2966 2967




2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986
/***************************************************************
 *	tlan_mii_write_reg
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		dev		The device structure for the device
 *				to write to.
 *		phy		The address of the PHY to be written to.
 *		reg		The register whose contents are to be
 *				written.
 *		val		The value to be written to the register.
 *
 *	This function uses the TLAN's MII bus to write the contents of a
 *	given register on a PHY.  It sends the appropriate info and then
 *	writes the 16-bit register value from the MII configuration bus
 *	via the TLAN SIO register.
 *
 **************************************************************/
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2987

2988 2989
static void
tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
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2990 2991 2992 2993
{
	u16	sio;
	int	minten;
	unsigned long flags = 0;
2994
	struct tlan_priv *priv = netdev_priv(dev);
L
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2995 2996 2997

	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2998

L
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2999 3000 3001
	if (!in_irq())
		spin_lock_irqsave(&priv->lock, flags);

3002
	tlan_mii_sync(dev->base_addr);
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3003

3004 3005 3006
	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
	if (minten)
		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
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3007

3008 3009 3010 3011
	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* write (01b) */
	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
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3012

3013 3014
	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* send ACK */
	tlan_mii_send_data(dev->base_addr, val, 16);	/* send data */
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3015

3016 3017
	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);	/* idle cycle */
	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
L
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3018

3019 3020
	if (minten)
		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3021

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3022 3023 3024
	if (!in_irq())
		spin_unlock_irqrestore(&priv->lock, flags);

3025
}
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3026 3027 3028 3029 3030 3031 3032




/*****************************************************************************
******************************************************************************

3033
ThunderLAN driver eeprom routines
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3034

3035 3036 3037 3038
the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
EEPROM.  these functions are based on information in microchip's
data sheet.  I don't know how well this functions will work with
other Eeproms.
L
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3039 3040 3041 3042 3043

******************************************************************************
*****************************************************************************/


3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059
/***************************************************************
 *	tlan_ee_send_start
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		io_base		The IO port base address for the
 *				TLAN device with the EEPROM to
 *				use.
 *
 *	This function sends a start cycle to an EEPROM attached
 *	to a TLAN chip.
 *
 **************************************************************/

static void tlan_ee_send_start(u16 io_base)
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3060 3061 3062
{
	u16	sio;

3063
	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
L
Linus Torvalds 已提交
3064 3065
	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;

3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099
	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
	tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
	tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);

}




/***************************************************************
 *	tlan_ee_send_byte
 *
 *	Returns:
 *		If the correct ack was received, 0, otherwise 1
 *	Parms:	io_base		The IO port base address for the
 *				TLAN device with the EEPROM to
 *				use.
 *		data		The 8 bits of information to
 *				send to the EEPROM.
 *		stop		If TLAN_EEPROM_STOP is passed, a
 *				stop cycle is sent after the
 *				byte is sent after the ack is
 *				read.
 *
 *	This function sends a byte on the serial EEPROM line,
 *	driving the clock to send each bit. The function then
 *	reverses transmission direction and reads an acknowledge
 *	bit.
 *
 **************************************************************/

static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
L
Linus Torvalds 已提交
3100 3101 3102 3103 3104
{
	int	err;
	u8	place;
	u16	sio;

3105
	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
L
Linus Torvalds 已提交
3106 3107 3108
	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;

	/* Assume clock is low, tx is enabled; */
3109 3110 3111
	for (place = 0x80; place != 0; place >>= 1) {
		if (place & data)
			tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
L
Linus Torvalds 已提交
3112
		else
3113 3114 3115
			tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
L
Linus Torvalds 已提交
3116
	}
3117 3118 3119 3120 3121
	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
	err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
L
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3122

3123
	if ((!err) && stop) {
S
Stephen Hemminger 已提交
3124
		/* STOP, raise data while clock is high */
3125 3126 3127
		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
L
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3128 3129
	}

3130
	return err;
L
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3131

3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161
}




/***************************************************************
 *	tlan_ee_receive_byte
 *
 *	Returns:
 *		Nothing
 *	Parms:
 *		io_base		The IO port base address for the
 *				TLAN device with the EEPROM to
 *				use.
 *		data		An address to a char to hold the
 *				data sent from the EEPROM.
 *		stop		If TLAN_EEPROM_STOP is passed, a
 *				stop cycle is sent after the
 *				byte is received, and no ack is
 *				sent.
 *
 *	This function receives 8 bits of data from the EEPROM
 *	over the serial link.  It then sends and ack bit, or no
 *	ack and a stop bit.  This function is used to retrieve
 *	data after the address of a byte in the EEPROM has been
 *	sent.
 *
 **************************************************************/

static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
L
Linus Torvalds 已提交
3162 3163 3164 3165
{
	u8  place;
	u16 sio;

3166
	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
L
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3167 3168 3169 3170
	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
	*data = 0;

	/* Assume clock is low, tx is enabled; */
3171 3172 3173 3174
	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
	for (place = 0x80; place; place >>= 1) {
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
L
Linus Torvalds 已提交
3175
			*data |= place;
3176
		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
L
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3177 3178
	}

3179 3180 3181 3182 3183
	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
	if (!stop) {
		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
L
Linus Torvalds 已提交
3184
	} else {
3185 3186 3187
		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);	/* no ack = 1 (?) */
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
S
Stephen Hemminger 已提交
3188
		/* STOP, raise data while clock is high */
3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220
		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
	}

}




/***************************************************************
 *	tlan_ee_read_byte
 *
 *	Returns:
 *		No error = 0, else, the stage at which the error
 *		occurred.
 *	Parms:
 *		io_base		The IO port base address for the
 *				TLAN device with the EEPROM to
 *				use.
 *		ee_addr		The address of the byte in the
 *				EEPROM whose contents are to be
 *				retrieved.
 *		data		An address to a char to hold the
 *				data obtained from the EEPROM.
 *
 *	This function reads a byte of information from an byte
 *	cell in the EEPROM.
 *
 **************************************************************/

static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
L
Linus Torvalds 已提交
3221 3222
{
	int err;
3223
	struct tlan_priv *priv = netdev_priv(dev);
L
Linus Torvalds 已提交
3224
	unsigned long flags = 0;
3225
	int ret = 0;
L
Linus Torvalds 已提交
3226 3227 3228

	spin_lock_irqsave(&priv->lock, flags);

3229 3230 3231 3232
	tlan_ee_send_start(dev->base_addr);
	err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
	if (err) {
		ret = 1;
L
Linus Torvalds 已提交
3233 3234
		goto fail;
	}
3235 3236 3237
	err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
	if (err) {
		ret = 2;
L
Linus Torvalds 已提交
3238 3239
		goto fail;
	}
3240 3241 3242 3243
	tlan_ee_send_start(dev->base_addr);
	err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
	if (err) {
		ret = 3;
L
Linus Torvalds 已提交
3244 3245
		goto fail;
	}
3246
	tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
L
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3247 3248 3249 3250 3251
fail:
	spin_unlock_irqrestore(&priv->lock, flags);

	return ret;

3252
}
L
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3253 3254 3255