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v4.17
   1/*******************************************************************************
   2 *
   3 *  Linux ThunderLAN Driver
   4 *
   5 *  tlan.c
   6 *  by James Banks
   7 *
   8 *  (C) 1997-1998 Caldera, Inc.
   9 *  (C) 1998 James Banks
  10 *  (C) 1999-2001 Torben Mathiasen
  11 *  (C) 2002 Samuel Chessman
  12 *
  13 *  This software may be used and distributed according to the terms
  14 *  of the GNU General Public License, incorporated herein by reference.
  15 *
  16 ** Useful (if not required) reading:
  17 *
  18 *		Texas Instruments, ThunderLAN Programmer's Guide,
  19 *			TI Literature Number SPWU013A
  20 *			available in PDF format from www.ti.com
  21 *		Level One, LXT901 and LXT970 Data Sheets
  22 *			available in PDF format from www.level1.com
  23 *		National Semiconductor, DP83840A Data Sheet
  24 *			available in PDF format from www.national.com
  25 *		Microchip Technology, 24C01A/02A/04A Data Sheet
  26 *			available in PDF format from www.microchip.com
  27 *
  28 ******************************************************************************/
  29
  30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32#include <linux/hardirq.h>
  33#include <linux/module.h>
  34#include <linux/init.h>
  35#include <linux/interrupt.h>
  36#include <linux/ioport.h>
  37#include <linux/eisa.h>
  38#include <linux/pci.h>
  39#include <linux/dma-mapping.h>
  40#include <linux/netdevice.h>
  41#include <linux/etherdevice.h>
  42#include <linux/delay.h>
  43#include <linux/spinlock.h>
  44#include <linux/workqueue.h>
  45#include <linux/mii.h>
  46
  47#include "tlan.h"
  48
  49
  50/* For removing EISA devices */
  51static	struct net_device	*tlan_eisa_devices;
  52
  53static	int		tlan_devices_installed;
  54
  55/* Set speed, duplex and aui settings */
  56static  int aui[MAX_TLAN_BOARDS];
  57static  int duplex[MAX_TLAN_BOARDS];
  58static  int speed[MAX_TLAN_BOARDS];
  59static  int boards_found;
  60module_param_array(aui, int, NULL, 0);
  61module_param_array(duplex, int, NULL, 0);
  62module_param_array(speed, int, NULL, 0);
  63MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
  64MODULE_PARM_DESC(duplex,
  65		 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
  66MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
  67
  68MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
  69MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
  70MODULE_LICENSE("GPL");
  71
  72/* Turn on debugging. See Documentation/networking/tlan.txt for details */
 
 
  73static  int		debug;
  74module_param(debug, int, 0);
  75MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  76
  77static	const char tlan_signature[] = "TLAN";
  78static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  79static  int tlan_have_pci;
  80static  int tlan_have_eisa;
  81
  82static const char * const media[] = {
  83	"10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  84	"100BaseTx-FD", "100BaseT4", NULL
  85};
  86
  87static struct board {
  88	const char	*device_label;
  89	u32		flags;
  90	u16		addr_ofs;
  91} board_info[] = {
  92	{ "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  93	{ "Compaq Netelligent 10/100 TX PCI UTP",
  94	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  95	{ "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  96	{ "Compaq NetFlex-3/P",
  97	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
  98	{ "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  99	{ "Compaq Netelligent Integrated 10/100 TX UTP",
 100	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 101	{ "Compaq Netelligent Dual 10/100 TX PCI UTP",
 102	  TLAN_ADAPTER_NONE, 0x83 },
 103	{ "Compaq Netelligent 10/100 TX Embedded UTP",
 104	  TLAN_ADAPTER_NONE, 0x83 },
 105	{ "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 106	{ "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
 107	  TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 108	{ "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
 109	  TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
 110	{ "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 111	{ "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
 112	{ "Compaq NetFlex-3/E",
 113	  TLAN_ADAPTER_ACTIVITY_LED |	/* EISA card */
 114	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 115	{ "Compaq NetFlex-3/E",
 116	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 117};
 118
 119static const struct pci_device_id tlan_pci_tbl[] = {
 120	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 121	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 122	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 123	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 124	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 125	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 126	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 127	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 128	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 129	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 130	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 131	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 132	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 133	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 134	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 135	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 136	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 137	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 138	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 139	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 140	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 141	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 142	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 143	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 144	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 145	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 146	{ 0,}
 147};
 148MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 149
 150static void	tlan_eisa_probe(void);
 151static void	tlan_eisa_cleanup(void);
 152static int      tlan_init(struct net_device *);
 153static int	tlan_open(struct net_device *dev);
 154static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
 155static irqreturn_t tlan_handle_interrupt(int, void *);
 156static int	tlan_close(struct net_device *);
 157static struct	net_device_stats *tlan_get_stats(struct net_device *);
 158static void	tlan_set_multicast_list(struct net_device *);
 159static int	tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 160static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
 161			    int irq, int rev, const struct pci_device_id *ent);
 162static void	tlan_tx_timeout(struct net_device *dev);
 163static void	tlan_tx_timeout_work(struct work_struct *work);
 164static int	tlan_init_one(struct pci_dev *pdev,
 165			      const struct pci_device_id *ent);
 166
 167static u32	tlan_handle_tx_eof(struct net_device *, u16);
 168static u32	tlan_handle_stat_overflow(struct net_device *, u16);
 169static u32	tlan_handle_rx_eof(struct net_device *, u16);
 170static u32	tlan_handle_dummy(struct net_device *, u16);
 171static u32	tlan_handle_tx_eoc(struct net_device *, u16);
 172static u32	tlan_handle_status_check(struct net_device *, u16);
 173static u32	tlan_handle_rx_eoc(struct net_device *, u16);
 174
 175static void	tlan_timer(struct timer_list *t);
 176static void	tlan_phy_monitor(struct timer_list *t);
 177
 178static void	tlan_reset_lists(struct net_device *);
 179static void	tlan_free_lists(struct net_device *);
 180static void	tlan_print_dio(u16);
 181static void	tlan_print_list(struct tlan_list *, char *, int);
 182static void	tlan_read_and_clear_stats(struct net_device *, int);
 183static void	tlan_reset_adapter(struct net_device *);
 184static void	tlan_finish_reset(struct net_device *);
 185static void	tlan_set_mac(struct net_device *, int areg, char *mac);
 186
 
 187static void	tlan_phy_print(struct net_device *);
 188static void	tlan_phy_detect(struct net_device *);
 189static void	tlan_phy_power_down(struct net_device *);
 190static void	tlan_phy_power_up(struct net_device *);
 191static void	tlan_phy_reset(struct net_device *);
 192static void	tlan_phy_start_link(struct net_device *);
 193static void	tlan_phy_finish_auto_neg(struct net_device *);
 194
 195/*
 196  static int	tlan_phy_nop(struct net_device *);
 197  static int	tlan_phy_internal_check(struct net_device *);
 198  static int	tlan_phy_internal_service(struct net_device *);
 199  static int	tlan_phy_dp83840a_check(struct net_device *);
 200*/
 201
 202static bool	tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 
 203static void	tlan_mii_send_data(u16, u32, unsigned);
 204static void	tlan_mii_sync(u16);
 
 205static void	tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 206
 207static void	tlan_ee_send_start(u16);
 208static int	tlan_ee_send_byte(u16, u8, int);
 209static void	tlan_ee_receive_byte(u16, u8 *, int);
 210static int	tlan_ee_read_byte(struct net_device *, u8, u8 *);
 211
 212
 213static inline void
 214tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 215{
 216	unsigned long addr = (unsigned long)skb;
 217	tag->buffer[9].address = addr;
 218	tag->buffer[8].address = upper_32_bits(addr);
 219}
 220
 221static inline struct sk_buff *
 222tlan_get_skb(const struct tlan_list *tag)
 223{
 224	unsigned long addr;
 225
 226	addr = tag->buffer[9].address;
 227	addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
 228	return (struct sk_buff *) addr;
 229}
 230
 231static u32
 232(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 233	NULL,
 234	tlan_handle_tx_eof,
 235	tlan_handle_stat_overflow,
 236	tlan_handle_rx_eof,
 237	tlan_handle_dummy,
 238	tlan_handle_tx_eoc,
 239	tlan_handle_status_check,
 240	tlan_handle_rx_eoc
 241};
 242
 243static inline void
 244tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 245{
 246	struct tlan_priv *priv = netdev_priv(dev);
 247	unsigned long flags = 0;
 248
 249	if (!in_irq())
 250		spin_lock_irqsave(&priv->lock, flags);
 251	if (priv->timer.function != NULL &&
 252	    priv->timer_type != TLAN_TIMER_ACTIVITY) {
 253		if (!in_irq())
 254			spin_unlock_irqrestore(&priv->lock, flags);
 255		return;
 256	}
 257	priv->timer.function = tlan_timer;
 258	if (!in_irq())
 259		spin_unlock_irqrestore(&priv->lock, flags);
 260
 261	priv->timer_set_at = jiffies;
 262	priv->timer_type = type;
 263	mod_timer(&priv->timer, jiffies + ticks);
 264
 265}
 266
 267
 268/*****************************************************************************
 269******************************************************************************
 270
 271ThunderLAN driver primary functions
 272
 273these functions are more or less common to all linux network drivers.
 274
 275******************************************************************************
 276*****************************************************************************/
 277
 278
 279
 280
 281
 282/***************************************************************
 283 *	tlan_remove_one
 284 *
 285 *	Returns:
 286 *		Nothing
 287 *	Parms:
 288 *		None
 289 *
 290 *	Goes through the TLanDevices list and frees the device
 291 *	structs and memory associated with each device (lists
 292 *	and buffers).  It also ureserves the IO port regions
 293 *	associated with this device.
 294 *
 295 **************************************************************/
 296
 297
 298static void tlan_remove_one(struct pci_dev *pdev)
 299{
 300	struct net_device *dev = pci_get_drvdata(pdev);
 301	struct tlan_priv	*priv = netdev_priv(dev);
 302
 303	unregister_netdev(dev);
 304
 305	if (priv->dma_storage) {
 306		pci_free_consistent(priv->pci_dev,
 307				    priv->dma_size, priv->dma_storage,
 308				    priv->dma_storage_dma);
 309	}
 310
 311#ifdef CONFIG_PCI
 312	pci_release_regions(pdev);
 313#endif
 314
 315	free_netdev(dev);
 316
 317	cancel_work_sync(&priv->tlan_tqueue);
 
 318}
 319
 320static void tlan_start(struct net_device *dev)
 321{
 322	tlan_reset_lists(dev);
 323	/* NOTE: It might not be necessary to read the stats before a
 324	   reset if you don't care what the values are.
 325	*/
 326	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 327	tlan_reset_adapter(dev);
 328	netif_wake_queue(dev);
 329}
 330
 331static void tlan_stop(struct net_device *dev)
 332{
 333	struct tlan_priv *priv = netdev_priv(dev);
 334
 335	del_timer_sync(&priv->media_timer);
 336	tlan_read_and_clear_stats(dev, TLAN_RECORD);
 337	outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 338	/* Reset and power down phy */
 339	tlan_reset_adapter(dev);
 340	if (priv->timer.function != NULL) {
 341		del_timer_sync(&priv->timer);
 342		priv->timer.function = NULL;
 343	}
 344}
 345
 346#ifdef CONFIG_PM
 347
 348static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
 349{
 350	struct net_device *dev = pci_get_drvdata(pdev);
 351
 352	if (netif_running(dev))
 353		tlan_stop(dev);
 354
 355	netif_device_detach(dev);
 356	pci_save_state(pdev);
 357	pci_disable_device(pdev);
 358	pci_wake_from_d3(pdev, false);
 359	pci_set_power_state(pdev, PCI_D3hot);
 360
 361	return 0;
 362}
 363
 364static int tlan_resume(struct pci_dev *pdev)
 365{
 366	struct net_device *dev = pci_get_drvdata(pdev);
 367	int rc = pci_enable_device(pdev);
 368
 369	if (rc)
 370		return rc;
 371	pci_restore_state(pdev);
 372	pci_enable_wake(pdev, PCI_D0, 0);
 373	netif_device_attach(dev);
 374
 375	if (netif_running(dev))
 376		tlan_start(dev);
 377
 378	return 0;
 379}
 380
 381#else /* CONFIG_PM */
 382
 383#define tlan_suspend   NULL
 384#define tlan_resume    NULL
 385
 386#endif /* CONFIG_PM */
 387
 388
 389static struct pci_driver tlan_driver = {
 390	.name		= "tlan",
 391	.id_table	= tlan_pci_tbl,
 392	.probe		= tlan_init_one,
 393	.remove		= tlan_remove_one,
 394	.suspend	= tlan_suspend,
 395	.resume		= tlan_resume,
 396};
 397
 398static int __init tlan_probe(void)
 399{
 400	int rc = -ENODEV;
 401
 402	pr_info("%s", tlan_banner);
 403
 404	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 405
 406	/* Use new style PCI probing. Now the kernel will
 407	   do most of this for us */
 408	rc = pci_register_driver(&tlan_driver);
 409
 410	if (rc != 0) {
 411		pr_err("Could not register pci driver\n");
 412		goto err_out_pci_free;
 413	}
 414
 415	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 416	tlan_eisa_probe();
 417
 418	pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 419		tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 420		tlan_have_pci, tlan_have_eisa);
 421
 422	if (tlan_devices_installed == 0) {
 423		rc = -ENODEV;
 424		goto  err_out_pci_unreg;
 425	}
 426	return 0;
 427
 428err_out_pci_unreg:
 429	pci_unregister_driver(&tlan_driver);
 430err_out_pci_free:
 431	return rc;
 432}
 433
 434
 435static int tlan_init_one(struct pci_dev *pdev,
 436				   const struct pci_device_id *ent)
 437{
 438	return tlan_probe1(pdev, -1, -1, 0, ent);
 439}
 440
 441
 442/*
 443***************************************************************
 444*	tlan_probe1
 445*
 446*	Returns:
 447*		0 on success, error code on error
 448*	Parms:
 449*		none
 450*
 451*	The name is lower case to fit in with all the rest of
 452*	the netcard_probe names.  This function looks for
 453*	another TLan based adapter, setting it up with the
 454*	allocated device struct if one is found.
 455*	tlan_probe has been ported to the new net API and
 456*	now allocates its own device structure. This function
 457*	is also used by modules.
 458*
 459**************************************************************/
 460
 461static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
 462		       const struct pci_device_id *ent)
 463{
 464
 465	struct net_device  *dev;
 466	struct tlan_priv  *priv;
 467	u16		   device_id;
 468	int		   reg, rc = -ENODEV;
 469
 470#ifdef CONFIG_PCI
 471	if (pdev) {
 472		rc = pci_enable_device(pdev);
 473		if (rc)
 474			return rc;
 475
 476		rc = pci_request_regions(pdev, tlan_signature);
 477		if (rc) {
 478			pr_err("Could not reserve IO regions\n");
 479			goto err_out;
 480		}
 481	}
 482#endif  /*  CONFIG_PCI  */
 483
 484	dev = alloc_etherdev(sizeof(struct tlan_priv));
 485	if (dev == NULL) {
 486		rc = -ENOMEM;
 487		goto err_out_regions;
 488	}
 489	SET_NETDEV_DEV(dev, &pdev->dev);
 490
 491	priv = netdev_priv(dev);
 492
 493	priv->pci_dev = pdev;
 494	priv->dev = dev;
 495
 496	/* Is this a PCI device? */
 497	if (pdev) {
 498		u32		   pci_io_base = 0;
 499
 500		priv->adapter = &board_info[ent->driver_data];
 501
 502		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 503		if (rc) {
 504			pr_err("No suitable PCI mapping available\n");
 505			goto err_out_free_dev;
 506		}
 507
 508		for (reg = 0; reg <= 5; reg++) {
 509			if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 510				pci_io_base = pci_resource_start(pdev, reg);
 511				TLAN_DBG(TLAN_DEBUG_GNRL,
 512					 "IO mapping is available at %x.\n",
 513					 pci_io_base);
 514				break;
 515			}
 516		}
 517		if (!pci_io_base) {
 518			pr_err("No IO mappings available\n");
 519			rc = -EIO;
 520			goto err_out_free_dev;
 521		}
 522
 523		dev->base_addr = pci_io_base;
 524		dev->irq = pdev->irq;
 525		priv->adapter_rev = pdev->revision;
 526		pci_set_master(pdev);
 527		pci_set_drvdata(pdev, dev);
 528
 529	} else	{     /* EISA card */
 530		/* This is a hack. We need to know which board structure
 531		 * is suited for this adapter */
 532		device_id = inw(ioaddr + EISA_ID2);
 533		if (device_id == 0x20F1) {
 534			priv->adapter = &board_info[13]; /* NetFlex-3/E */
 535			priv->adapter_rev = 23;		/* TLAN 2.3 */
 536		} else {
 537			priv->adapter = &board_info[14];
 538			priv->adapter_rev = 10;		/* TLAN 1.0 */
 539		}
 540		dev->base_addr = ioaddr;
 541		dev->irq = irq;
 542	}
 543
 544	/* Kernel parameters */
 545	if (dev->mem_start) {
 546		priv->aui    = dev->mem_start & 0x01;
 547		priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 548			: (dev->mem_start & 0x06) >> 1;
 549		priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 550			: (dev->mem_start & 0x18) >> 3;
 551
 552		if (priv->speed == 0x1)
 553			priv->speed = TLAN_SPEED_10;
 554		else if (priv->speed == 0x2)
 555			priv->speed = TLAN_SPEED_100;
 556
 557		debug = priv->debug = dev->mem_end;
 558	} else {
 559		priv->aui    = aui[boards_found];
 560		priv->speed  = speed[boards_found];
 561		priv->duplex = duplex[boards_found];
 562		priv->debug = debug;
 563	}
 564
 565	/* This will be used when we get an adapter error from
 566	 * within our irq handler */
 567	INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 568
 569	spin_lock_init(&priv->lock);
 570
 571	rc = tlan_init(dev);
 572	if (rc) {
 573		pr_err("Could not set up device\n");
 574		goto err_out_free_dev;
 575	}
 576
 577	rc = register_netdev(dev);
 578	if (rc) {
 579		pr_err("Could not register device\n");
 580		goto err_out_uninit;
 581	}
 582
 583
 584	tlan_devices_installed++;
 585	boards_found++;
 586
 587	/* pdev is NULL if this is an EISA device */
 588	if (pdev)
 589		tlan_have_pci++;
 590	else {
 591		priv->next_device = tlan_eisa_devices;
 592		tlan_eisa_devices = dev;
 593		tlan_have_eisa++;
 594	}
 595
 596	netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 597		    (int)dev->irq,
 598		    (int)dev->base_addr,
 599		    priv->adapter->device_label,
 600		    priv->adapter_rev);
 601	return 0;
 602
 603err_out_uninit:
 604	pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
 605			    priv->dma_storage_dma);
 606err_out_free_dev:
 607	free_netdev(dev);
 608err_out_regions:
 609#ifdef CONFIG_PCI
 610	if (pdev)
 611		pci_release_regions(pdev);
 612err_out:
 613#endif
 614	if (pdev)
 615		pci_disable_device(pdev);
 616	return rc;
 617}
 618
 619
 620static void tlan_eisa_cleanup(void)
 621{
 622	struct net_device *dev;
 623	struct tlan_priv *priv;
 624
 625	while (tlan_have_eisa) {
 626		dev = tlan_eisa_devices;
 627		priv = netdev_priv(dev);
 628		if (priv->dma_storage) {
 629			pci_free_consistent(priv->pci_dev, priv->dma_size,
 630					    priv->dma_storage,
 631					    priv->dma_storage_dma);
 632		}
 633		release_region(dev->base_addr, 0x10);
 634		unregister_netdev(dev);
 635		tlan_eisa_devices = priv->next_device;
 636		free_netdev(dev);
 637		tlan_have_eisa--;
 638	}
 639}
 640
 641
 642static void __exit tlan_exit(void)
 643{
 644	pci_unregister_driver(&tlan_driver);
 645
 646	if (tlan_have_eisa)
 647		tlan_eisa_cleanup();
 648
 649}
 650
 651
 652/* Module loading/unloading */
 653module_init(tlan_probe);
 654module_exit(tlan_exit);
 655
 656
 657
 658/**************************************************************
 659 *	tlan_eisa_probe
 660 *
 661 *	Returns: 0 on success, 1 otherwise
 662 *
 663 *	Parms:	 None
 664 *
 665 *
 666 *	This functions probes for EISA devices and calls
 667 *	TLan_probe1 when one is found.
 668 *
 669 *************************************************************/
 670
 671static void  __init tlan_eisa_probe(void)
 672{
 673	long	ioaddr;
 674	int	rc = -ENODEV;
 675	int	irq;
 676	u16	device_id;
 677
 678	if (!EISA_bus) {
 679		TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 680		return;
 681	}
 682
 683	/* Loop through all slots of the EISA bus */
 684	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 685
 686		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 687			 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 688		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 689			 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 690
 691
 692		TLAN_DBG(TLAN_DEBUG_PROBE,
 693			 "Probing for EISA adapter at IO: 0x%4x : ",
 694			 (int) ioaddr);
 695		if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 696			goto out;
 697
 698		if (inw(ioaddr + EISA_ID) != 0x110E) {
 699			release_region(ioaddr, 0x10);
 700			goto out;
 701		}
 702
 703		device_id = inw(ioaddr + EISA_ID2);
 704		if (device_id !=  0x20F1 && device_id != 0x40F1) {
 705			release_region(ioaddr, 0x10);
 706			goto out;
 707		}
 708
 709		/* check if adapter is enabled */
 710		if (inb(ioaddr + EISA_CR) != 0x1) {
 711			release_region(ioaddr, 0x10);
 712			goto out2;
 713		}
 714
 715		if (debug == 0x10)
 716			pr_info("Found one\n");
 717
 718
 719		/* Get irq from board */
 720		switch (inb(ioaddr + 0xcc0)) {
 721		case(0x10):
 722			irq = 5;
 723			break;
 724		case(0x20):
 725			irq = 9;
 726			break;
 727		case(0x40):
 728			irq = 10;
 729			break;
 730		case(0x80):
 731			irq = 11;
 732			break;
 733		default:
 734			goto out;
 735		}
 736
 737
 738		/* Setup the newly found eisa adapter */
 739		rc = tlan_probe1(NULL, ioaddr, irq,
 740				 12, NULL);
 741		continue;
 742
 743out:
 744		if (debug == 0x10)
 745			pr_info("None found\n");
 746		continue;
 747
 748out2:
 749		if (debug == 0x10)
 750			pr_info("Card found but it is not enabled, skipping\n");
 751		continue;
 752
 753	}
 754
 755}
 756
 757#ifdef CONFIG_NET_POLL_CONTROLLER
 758static void tlan_poll(struct net_device *dev)
 759{
 760	disable_irq(dev->irq);
 761	tlan_handle_interrupt(dev->irq, dev);
 762	enable_irq(dev->irq);
 763}
 764#endif
 765
 766static const struct net_device_ops tlan_netdev_ops = {
 767	.ndo_open		= tlan_open,
 768	.ndo_stop		= tlan_close,
 769	.ndo_start_xmit		= tlan_start_tx,
 770	.ndo_tx_timeout		= tlan_tx_timeout,
 771	.ndo_get_stats		= tlan_get_stats,
 772	.ndo_set_rx_mode	= tlan_set_multicast_list,
 773	.ndo_do_ioctl		= tlan_ioctl,
 774	.ndo_set_mac_address	= eth_mac_addr,
 775	.ndo_validate_addr	= eth_validate_addr,
 776#ifdef CONFIG_NET_POLL_CONTROLLER
 777	.ndo_poll_controller	 = tlan_poll,
 778#endif
 779};
 780
 781static void tlan_get_drvinfo(struct net_device *dev,
 782			     struct ethtool_drvinfo *info)
 783{
 784	struct tlan_priv *priv = netdev_priv(dev);
 785
 786	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 787	if (priv->pci_dev)
 788		strlcpy(info->bus_info, pci_name(priv->pci_dev),
 789			sizeof(info->bus_info));
 790	else
 791		strlcpy(info->bus_info, "EISA",	sizeof(info->bus_info));
 792}
 793
 794static int tlan_get_eeprom_len(struct net_device *dev)
 795{
 796	return TLAN_EEPROM_SIZE;
 797}
 798
 799static int tlan_get_eeprom(struct net_device *dev,
 800			   struct ethtool_eeprom *eeprom, u8 *data)
 801{
 802	int i;
 803
 804	for (i = 0; i < TLAN_EEPROM_SIZE; i++)
 805		if (tlan_ee_read_byte(dev, i, &data[i]))
 806			return -EIO;
 807
 808	return 0;
 809}
 810
 811static const struct ethtool_ops tlan_ethtool_ops = {
 812	.get_drvinfo	= tlan_get_drvinfo,
 813	.get_link	= ethtool_op_get_link,
 814	.get_eeprom_len	= tlan_get_eeprom_len,
 815	.get_eeprom	= tlan_get_eeprom,
 816};
 817
 818/***************************************************************
 819 *	tlan_init
 820 *
 821 *	Returns:
 822 *		0 on success, error code otherwise.
 823 *	Parms:
 824 *		dev	The structure of the device to be
 825 *			init'ed.
 826 *
 827 *	This function completes the initialization of the
 828 *	device structure and driver.  It reserves the IO
 829 *	addresses, allocates memory for the lists and bounce
 830 *	buffers, retrieves the MAC address from the eeprom
 831 *	and assignes the device's methods.
 832 *
 833 **************************************************************/
 834
 835static int tlan_init(struct net_device *dev)
 836{
 837	int		dma_size;
 838	int		err;
 839	int		i;
 840	struct tlan_priv	*priv;
 
 841
 842	priv = netdev_priv(dev);
 843
 844	dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 845		* (sizeof(struct tlan_list));
 846	priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
 847						 dma_size,
 848						 &priv->dma_storage_dma);
 849	priv->dma_size = dma_size;
 850
 851	if (priv->dma_storage == NULL) {
 852		pr_err("Could not allocate lists and buffers for %s\n",
 853		       dev->name);
 854		return -ENOMEM;
 855	}
 856	memset(priv->dma_storage, 0, dma_size);
 857	priv->rx_list = (struct tlan_list *)
 858		ALIGN((unsigned long)priv->dma_storage, 8);
 859	priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 860	priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 861	priv->tx_list_dma =
 862		priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 863
 864	err = 0;
 865	for (i = 0; i < ETH_ALEN; i++)
 866		err |= tlan_ee_read_byte(dev,
 867					 (u8) priv->adapter->addr_ofs + i,
 868					 (u8 *) &dev->dev_addr[i]);
 869	if (err) {
 870		pr_err("%s: Error reading MAC from eeprom: %d\n",
 871		       dev->name, err);
 872	}
 873	/* Olicom OC-2325/OC-2326 have the address byte-swapped */
 874	if (priv->adapter->addr_ofs == 0xf8) {
 875		for (i = 0; i < ETH_ALEN; i += 2) {
 876			char tmp = dev->dev_addr[i];
 877			dev->dev_addr[i] = dev->dev_addr[i + 1];
 878			dev->dev_addr[i + 1] = tmp;
 879		}
 880	}
 
 881
 882	netif_carrier_off(dev);
 883
 884	/* Device methods */
 885	dev->netdev_ops = &tlan_netdev_ops;
 886	dev->ethtool_ops = &tlan_ethtool_ops;
 887	dev->watchdog_timeo = TX_TIMEOUT;
 888
 889	return 0;
 890
 891}
 892
 893
 894
 895
 896/***************************************************************
 897 *	tlan_open
 898 *
 899 *	Returns:
 900 *		0 on success, error code otherwise.
 901 *	Parms:
 902 *		dev	Structure of device to be opened.
 903 *
 904 *	This routine puts the driver and TLAN adapter in a
 905 *	state where it is ready to send and receive packets.
 906 *	It allocates the IRQ, resets and brings the adapter
 907 *	out of reset, and allows interrupts.  It also delays
 908 *	the startup for autonegotiation or sends a Rx GO
 909 *	command to the adapter, as appropriate.
 910 *
 911 **************************************************************/
 912
 913static int tlan_open(struct net_device *dev)
 914{
 915	struct tlan_priv	*priv = netdev_priv(dev);
 916	int		err;
 917
 918	priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 919	err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 920			  dev->name, dev);
 921
 922	if (err) {
 923		netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 924			   dev->irq);
 925		return err;
 926	}
 927
 928	timer_setup(&priv->timer, NULL, 0);
 929	timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
 930
 931	tlan_start(dev);
 932
 933	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 934		 dev->name, priv->tlan_rev);
 935
 936	return 0;
 937
 938}
 939
 940
 941
 942/**************************************************************
 943 *	tlan_ioctl
 944 *
 945 *	Returns:
 946 *		0 on success, error code otherwise
 947 *	Params:
 948 *		dev	structure of device to receive ioctl.
 949 *
 950 *		rq	ifreq structure to hold userspace data.
 951 *
 952 *		cmd	ioctl command.
 953 *
 954 *
 955 *************************************************************/
 956
 957static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 958{
 959	struct tlan_priv *priv = netdev_priv(dev);
 960	struct mii_ioctl_data *data = if_mii(rq);
 961	u32 phy   = priv->phy[priv->phy_num];
 962
 963	if (!priv->phy_online)
 964		return -EAGAIN;
 965
 966	switch (cmd) {
 967	case SIOCGMIIPHY:		/* get address of MII PHY in use. */
 968		data->phy_id = phy;
 
 969
 970
 971	case SIOCGMIIREG:		/* read MII PHY register. */
 972		tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 973				  data->reg_num & 0x1f, &data->val_out);
 974		return 0;
 975
 976
 977	case SIOCSMIIREG:		/* write MII PHY register. */
 978		tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 979				   data->reg_num & 0x1f, data->val_in);
 980		return 0;
 981	default:
 982		return -EOPNOTSUPP;
 983	}
 984}
 985
 986
 987/***************************************************************
 988 *	tlan_tx_timeout
 989 *
 990 *	Returns: nothing
 991 *
 992 *	Params:
 993 *		dev	structure of device which timed out
 994 *			during transmit.
 995 *
 996 **************************************************************/
 997
 998static void tlan_tx_timeout(struct net_device *dev)
 999{
1000
1001	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1002
1003	/* Ok so we timed out, lets see what we can do about it...*/
1004	tlan_free_lists(dev);
1005	tlan_reset_lists(dev);
1006	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1007	tlan_reset_adapter(dev);
1008	netif_trans_update(dev); /* prevent tx timeout */
1009	netif_wake_queue(dev);
1010
1011}
1012
1013
1014/***************************************************************
1015 *	tlan_tx_timeout_work
1016 *
1017 *	Returns: nothing
1018 *
1019 *	Params:
1020 *		work	work item of device which timed out
1021 *
1022 **************************************************************/
1023
1024static void tlan_tx_timeout_work(struct work_struct *work)
1025{
1026	struct tlan_priv	*priv =
1027		container_of(work, struct tlan_priv, tlan_tqueue);
1028
1029	tlan_tx_timeout(priv->dev);
1030}
1031
1032
1033
1034/***************************************************************
1035 *	tlan_start_tx
1036 *
1037 *	Returns:
1038 *		0 on success, non-zero on failure.
1039 *	Parms:
1040 *		skb	A pointer to the sk_buff containing the
1041 *			frame to be sent.
1042 *		dev	The device to send the data on.
1043 *
1044 *	This function adds a frame to the Tx list to be sent
1045 *	ASAP.  First it	verifies that the adapter is ready and
1046 *	there is room in the queue.  Then it sets up the next
1047 *	available list, copies the frame to the	corresponding
1048 *	buffer.  If the adapter Tx channel is idle, it gives
1049 *	the adapter a Tx Go command on the list, otherwise it
1050 *	sets the forward address of the previous list to point
1051 *	to this one.  Then it frees the sk_buff.
1052 *
1053 **************************************************************/
1054
1055static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1056{
1057	struct tlan_priv *priv = netdev_priv(dev);
1058	dma_addr_t	tail_list_phys;
1059	struct tlan_list	*tail_list;
1060	unsigned long	flags;
1061	unsigned int    txlen;
1062
1063	if (!priv->phy_online) {
1064		TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1065			 dev->name);
1066		dev_kfree_skb_any(skb);
1067		return NETDEV_TX_OK;
1068	}
1069
1070	if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1071		return NETDEV_TX_OK;
1072	txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1073
1074	tail_list = priv->tx_list + priv->tx_tail;
1075	tail_list_phys =
1076		priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1077
1078	if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1079		TLAN_DBG(TLAN_DEBUG_TX,
1080			 "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1081			 dev->name, priv->tx_head, priv->tx_tail);
1082		netif_stop_queue(dev);
1083		priv->tx_busy_count++;
1084		return NETDEV_TX_BUSY;
1085	}
1086
1087	tail_list->forward = 0;
1088
1089	tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1090						      skb->data, txlen,
1091						      PCI_DMA_TODEVICE);
1092	tlan_store_skb(tail_list, skb);
1093
1094	tail_list->frame_size = (u16) txlen;
1095	tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1096	tail_list->buffer[1].count = 0;
1097	tail_list->buffer[1].address = 0;
1098
1099	spin_lock_irqsave(&priv->lock, flags);
1100	tail_list->c_stat = TLAN_CSTAT_READY;
1101	if (!priv->tx_in_progress) {
1102		priv->tx_in_progress = 1;
1103		TLAN_DBG(TLAN_DEBUG_TX,
1104			 "TRANSMIT:  Starting TX on buffer %d\n",
1105			 priv->tx_tail);
1106		outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1107		outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1108	} else {
1109		TLAN_DBG(TLAN_DEBUG_TX,
1110			 "TRANSMIT:  Adding buffer %d to TX channel\n",
1111			 priv->tx_tail);
1112		if (priv->tx_tail == 0) {
1113			(priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1114				= tail_list_phys;
1115		} else {
1116			(priv->tx_list + (priv->tx_tail - 1))->forward
1117				= tail_list_phys;
1118		}
1119	}
1120	spin_unlock_irqrestore(&priv->lock, flags);
1121
1122	CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1123
1124	return NETDEV_TX_OK;
1125
1126}
1127
1128
1129
1130
1131/***************************************************************
1132 *	tlan_handle_interrupt
1133 *
1134 *	Returns:
1135 *		Nothing
1136 *	Parms:
1137 *		irq	The line on which the interrupt
1138 *			occurred.
1139 *		dev_id	A pointer to the device assigned to
1140 *			this irq line.
1141 *
1142 *	This function handles an interrupt generated by its
1143 *	assigned TLAN adapter.  The function deactivates
1144 *	interrupts on its adapter, records the type of
1145 *	interrupt, executes the appropriate subhandler, and
1146 *	acknowdges the interrupt to the adapter (thus
1147 *	re-enabling adapter interrupts.
1148 *
1149 **************************************************************/
1150
1151static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1152{
1153	struct net_device	*dev = dev_id;
1154	struct tlan_priv *priv = netdev_priv(dev);
1155	u16		host_int;
1156	u16		type;
1157
1158	spin_lock(&priv->lock);
1159
1160	host_int = inw(dev->base_addr + TLAN_HOST_INT);
1161	type = (host_int & TLAN_HI_IT_MASK) >> 2;
1162	if (type) {
1163		u32	ack;
1164		u32	host_cmd;
1165
1166		outw(host_int, dev->base_addr + TLAN_HOST_INT);
1167		ack = tlan_int_vector[type](dev, host_int);
1168
1169		if (ack) {
1170			host_cmd = TLAN_HC_ACK | ack | (type << 18);
1171			outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1172		}
1173	}
1174
1175	spin_unlock(&priv->lock);
1176
1177	return IRQ_RETVAL(type);
1178}
1179
1180
1181
1182
1183/***************************************************************
1184 *	tlan_close
1185 *
1186 *	Returns:
1187 *		An error code.
1188 *	Parms:
1189 *		dev	The device structure of the device to
1190 *			close.
1191 *
1192 *	This function shuts down the adapter.  It records any
1193 *	stats, puts the adapter into reset state, deactivates
1194 *	its time as needed, and	frees the irq it is using.
1195 *
1196 **************************************************************/
1197
1198static int tlan_close(struct net_device *dev)
1199{
1200	tlan_stop(dev);
1201
1202	free_irq(dev->irq, dev);
1203	tlan_free_lists(dev);
1204	TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1205
1206	return 0;
1207
1208}
1209
1210
1211
1212
1213/***************************************************************
1214 *	tlan_get_stats
1215 *
1216 *	Returns:
1217 *		A pointer to the device's statistics structure.
1218 *	Parms:
1219 *		dev	The device structure to return the
1220 *			stats for.
1221 *
1222 *	This function updates the devices statistics by reading
1223 *	the TLAN chip's onboard registers.  Then it returns the
1224 *	address of the statistics structure.
1225 *
1226 **************************************************************/
1227
1228static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1229{
1230	struct tlan_priv	*priv = netdev_priv(dev);
1231	int i;
1232
1233	/* Should only read stats if open ? */
1234	tlan_read_and_clear_stats(dev, TLAN_RECORD);
1235
1236	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1237		 priv->rx_eoc_count);
1238	TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1239		 priv->tx_busy_count);
1240	if (debug & TLAN_DEBUG_GNRL) {
1241		tlan_print_dio(dev->base_addr);
1242		tlan_phy_print(dev);
1243	}
1244	if (debug & TLAN_DEBUG_LIST) {
1245		for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1246			tlan_print_list(priv->rx_list + i, "RX", i);
1247		for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1248			tlan_print_list(priv->tx_list + i, "TX", i);
1249	}
1250
1251	return &dev->stats;
1252
1253}
1254
1255
1256
1257
1258/***************************************************************
1259 *	tlan_set_multicast_list
1260 *
1261 *	Returns:
1262 *		Nothing
1263 *	Parms:
1264 *		dev	The device structure to set the
1265 *			multicast list for.
1266 *
1267 *	This function sets the TLAN adaptor to various receive
1268 *	modes.  If the IFF_PROMISC flag is set, promiscuous
1269 *	mode is acitviated.  Otherwise,	promiscuous mode is
1270 *	turned off.  If the IFF_ALLMULTI flag is set, then
1271 *	the hash table is set to receive all group addresses.
1272 *	Otherwise, the first three multicast addresses are
1273 *	stored in AREG_1-3, and the rest are selected via the
1274 *	hash table, as necessary.
1275 *
1276 **************************************************************/
1277
1278static void tlan_set_multicast_list(struct net_device *dev)
1279{
1280	struct netdev_hw_addr *ha;
1281	u32			hash1 = 0;
1282	u32			hash2 = 0;
1283	int			i;
1284	u32			offset;
1285	u8			tmp;
1286
1287	if (dev->flags & IFF_PROMISC) {
1288		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1289		tlan_dio_write8(dev->base_addr,
1290				TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1291	} else {
1292		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1293		tlan_dio_write8(dev->base_addr,
1294				TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1295		if (dev->flags & IFF_ALLMULTI) {
1296			for (i = 0; i < 3; i++)
1297				tlan_set_mac(dev, i + 1, NULL);
1298			tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1299					 0xffffffff);
1300			tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1301					 0xffffffff);
1302		} else {
1303			i = 0;
1304			netdev_for_each_mc_addr(ha, dev) {
1305				if (i < 3) {
1306					tlan_set_mac(dev, i + 1,
1307						     (char *) &ha->addr);
1308				} else {
1309					offset =
1310						tlan_hash_func((u8 *)&ha->addr);
1311					if (offset < 32)
1312						hash1 |= (1 << offset);
1313					else
1314						hash2 |= (1 << (offset - 32));
1315				}
1316				i++;
1317			}
1318			for ( ; i < 3; i++)
1319				tlan_set_mac(dev, i + 1, NULL);
1320			tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1321			tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1322		}
1323	}
1324
1325}
1326
1327
1328
1329/*****************************************************************************
1330******************************************************************************
1331
1332ThunderLAN driver interrupt vectors and table
1333
1334please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1335Programmer's Guide" for more informations on handling interrupts
1336generated by TLAN based adapters.
1337
1338******************************************************************************
1339*****************************************************************************/
1340
1341
1342
1343
1344/***************************************************************
1345 *	tlan_handle_tx_eof
1346 *
1347 *	Returns:
1348 *		1
1349 *	Parms:
1350 *		dev		Device assigned the IRQ that was
1351 *				raised.
1352 *		host_int	The contents of the HOST_INT
1353 *				port.
1354 *
1355 *	This function handles Tx EOF interrupts which are raised
1356 *	by the adapter when it has completed sending the
1357 *	contents of a buffer.  If detemines which list/buffer
1358 *	was completed and resets it.  If the buffer was the last
1359 *	in the channel (EOC), then the function checks to see if
1360 *	another buffer is ready to send, and if so, sends a Tx
1361 *	Go command.  Finally, the driver activates/continues the
1362 *	activity LED.
1363 *
1364 **************************************************************/
1365
1366static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1367{
1368	struct tlan_priv	*priv = netdev_priv(dev);
1369	int		eoc = 0;
1370	struct tlan_list	*head_list;
1371	dma_addr_t	head_list_phys;
1372	u32		ack = 0;
1373	u16		tmp_c_stat;
1374
1375	TLAN_DBG(TLAN_DEBUG_TX,
1376		 "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1377		 priv->tx_head, priv->tx_tail);
1378	head_list = priv->tx_list + priv->tx_head;
1379
1380	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1381	       && (ack < 255)) {
1382		struct sk_buff *skb = tlan_get_skb(head_list);
1383
1384		ack++;
1385		pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1386				 max(skb->len,
1387				     (unsigned int)TLAN_MIN_FRAME_SIZE),
1388				 PCI_DMA_TODEVICE);
1389		dev_kfree_skb_any(skb);
1390		head_list->buffer[8].address = 0;
1391		head_list->buffer[9].address = 0;
1392
1393		if (tmp_c_stat & TLAN_CSTAT_EOC)
1394			eoc = 1;
1395
1396		dev->stats.tx_bytes += head_list->frame_size;
1397
1398		head_list->c_stat = TLAN_CSTAT_UNUSED;
1399		netif_start_queue(dev);
1400		CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1401		head_list = priv->tx_list + priv->tx_head;
1402	}
1403
1404	if (!ack)
1405		netdev_info(dev,
1406			    "Received interrupt for uncompleted TX frame\n");
1407
1408	if (eoc) {
1409		TLAN_DBG(TLAN_DEBUG_TX,
1410			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1411			 priv->tx_head, priv->tx_tail);
1412		head_list = priv->tx_list + priv->tx_head;
1413		head_list_phys = priv->tx_list_dma
1414			+ sizeof(struct tlan_list)*priv->tx_head;
1415		if ((head_list->c_stat & TLAN_CSTAT_READY)
1416		    == TLAN_CSTAT_READY) {
1417			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1418			ack |= TLAN_HC_GO;
1419		} else {
1420			priv->tx_in_progress = 0;
1421		}
1422	}
1423
1424	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1425		tlan_dio_write8(dev->base_addr,
1426				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1427		if (priv->timer.function == NULL) {
1428			priv->timer.function = tlan_timer;
1429			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1430			priv->timer_set_at = jiffies;
1431			priv->timer_type = TLAN_TIMER_ACTIVITY;
1432			add_timer(&priv->timer);
1433		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1434			priv->timer_set_at = jiffies;
1435		}
1436	}
1437
1438	return ack;
1439
1440}
1441
1442
1443
1444
1445/***************************************************************
1446 *	TLan_HandleStatOverflow
1447 *
1448 *	Returns:
1449 *		1
1450 *	Parms:
1451 *		dev		Device assigned the IRQ that was
1452 *				raised.
1453 *		host_int	The contents of the HOST_INT
1454 *				port.
1455 *
1456 *	This function handles the Statistics Overflow interrupt
1457 *	which means that one or more of the TLAN statistics
1458 *	registers has reached 1/2 capacity and needs to be read.
1459 *
1460 **************************************************************/
1461
1462static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1463{
1464	tlan_read_and_clear_stats(dev, TLAN_RECORD);
1465
1466	return 1;
1467
1468}
1469
1470
1471
1472
1473/***************************************************************
1474 *	TLan_HandleRxEOF
1475 *
1476 *	Returns:
1477 *		1
1478 *	Parms:
1479 *		dev		Device assigned the IRQ that was
1480 *				raised.
1481 *		host_int	The contents of the HOST_INT
1482 *				port.
1483 *
1484 *	This function handles the Rx EOF interrupt which
1485 *	indicates a frame has been received by the adapter from
1486 *	the net and the frame has been transferred to memory.
1487 *	The function determines the bounce buffer the frame has
1488 *	been loaded into, creates a new sk_buff big enough to
1489 *	hold the frame, and sends it to protocol stack.  It
1490 *	then resets the used buffer and appends it to the end
1491 *	of the list.  If the frame was the last in the Rx
1492 *	channel (EOC), the function restarts the receive channel
1493 *	by sending an Rx Go command to the adapter.  Then it
1494 *	activates/continues the activity LED.
1495 *
1496 **************************************************************/
1497
1498static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1499{
1500	struct tlan_priv	*priv = netdev_priv(dev);
1501	u32		ack = 0;
1502	int		eoc = 0;
1503	struct tlan_list	*head_list;
1504	struct sk_buff	*skb;
1505	struct tlan_list	*tail_list;
1506	u16		tmp_c_stat;
1507	dma_addr_t	head_list_phys;
1508
1509	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1510		 priv->rx_head, priv->rx_tail);
1511	head_list = priv->rx_list + priv->rx_head;
1512	head_list_phys =
1513		priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1514
1515	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1516	       && (ack < 255)) {
1517		dma_addr_t frame_dma = head_list->buffer[0].address;
1518		u32 frame_size = head_list->frame_size;
1519		struct sk_buff *new_skb;
1520
1521		ack++;
1522		if (tmp_c_stat & TLAN_CSTAT_EOC)
1523			eoc = 1;
1524
1525		new_skb = netdev_alloc_skb_ip_align(dev,
1526						    TLAN_MAX_FRAME_SIZE + 5);
1527		if (!new_skb)
1528			goto drop_and_reuse;
1529
1530		skb = tlan_get_skb(head_list);
1531		pci_unmap_single(priv->pci_dev, frame_dma,
1532				 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1533		skb_put(skb, frame_size);
1534
1535		dev->stats.rx_bytes += frame_size;
1536
1537		skb->protocol = eth_type_trans(skb, dev);
1538		netif_rx(skb);
1539
1540		head_list->buffer[0].address =
1541			pci_map_single(priv->pci_dev, new_skb->data,
1542				       TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1543
1544		tlan_store_skb(head_list, new_skb);
1545drop_and_reuse:
1546		head_list->forward = 0;
1547		head_list->c_stat = 0;
1548		tail_list = priv->rx_list + priv->rx_tail;
1549		tail_list->forward = head_list_phys;
1550
1551		CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1552		CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1553		head_list = priv->rx_list + priv->rx_head;
1554		head_list_phys = priv->rx_list_dma
1555			+ sizeof(struct tlan_list)*priv->rx_head;
1556	}
1557
1558	if (!ack)
1559		netdev_info(dev,
1560			    "Received interrupt for uncompleted RX frame\n");
1561
1562
1563	if (eoc) {
1564		TLAN_DBG(TLAN_DEBUG_RX,
1565			 "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1566			 priv->rx_head, priv->rx_tail);
1567		head_list = priv->rx_list + priv->rx_head;
1568		head_list_phys = priv->rx_list_dma
1569			+ sizeof(struct tlan_list)*priv->rx_head;
1570		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1571		ack |= TLAN_HC_GO | TLAN_HC_RT;
1572		priv->rx_eoc_count++;
1573	}
1574
1575	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1576		tlan_dio_write8(dev->base_addr,
1577				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1578		if (priv->timer.function == NULL)  {
1579			priv->timer.function = tlan_timer;
1580			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1581			priv->timer_set_at = jiffies;
1582			priv->timer_type = TLAN_TIMER_ACTIVITY;
1583			add_timer(&priv->timer);
1584		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1585			priv->timer_set_at = jiffies;
1586		}
1587	}
1588
1589	return ack;
1590
1591}
1592
1593
1594
1595
1596/***************************************************************
1597 *	tlan_handle_dummy
1598 *
1599 *	Returns:
1600 *		1
1601 *	Parms:
1602 *		dev		Device assigned the IRQ that was
1603 *				raised.
1604 *		host_int	The contents of the HOST_INT
1605 *				port.
1606 *
1607 *	This function handles the Dummy interrupt, which is
1608 *	raised whenever a test interrupt is generated by setting
1609 *	the Req_Int bit of HOST_CMD to 1.
1610 *
1611 **************************************************************/
1612
1613static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1614{
1615	netdev_info(dev, "Test interrupt\n");
1616	return 1;
1617
1618}
1619
1620
1621
1622
1623/***************************************************************
1624 *	tlan_handle_tx_eoc
1625 *
1626 *	Returns:
1627 *		1
1628 *	Parms:
1629 *		dev		Device assigned the IRQ that was
1630 *				raised.
1631 *		host_int	The contents of the HOST_INT
1632 *				port.
1633 *
1634 *	This driver is structured to determine EOC occurrences by
1635 *	reading the CSTAT member of the list structure.  Tx EOC
1636 *	interrupts are disabled via the DIO INTDIS register.
1637 *	However, TLAN chips before revision 3.0 didn't have this
1638 *	functionality, so process EOC events if this is the
1639 *	case.
1640 *
1641 **************************************************************/
1642
1643static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1644{
1645	struct tlan_priv	*priv = netdev_priv(dev);
1646	struct tlan_list		*head_list;
1647	dma_addr_t		head_list_phys;
1648	u32			ack = 1;
1649
1650	if (priv->tlan_rev < 0x30) {
1651		TLAN_DBG(TLAN_DEBUG_TX,
1652			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1653			 priv->tx_head, priv->tx_tail);
1654		head_list = priv->tx_list + priv->tx_head;
1655		head_list_phys = priv->tx_list_dma
1656			+ sizeof(struct tlan_list)*priv->tx_head;
1657		if ((head_list->c_stat & TLAN_CSTAT_READY)
1658		    == TLAN_CSTAT_READY) {
1659			netif_stop_queue(dev);
1660			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1661			ack |= TLAN_HC_GO;
1662		} else {
1663			priv->tx_in_progress = 0;
1664		}
1665	}
1666
1667	return ack;
1668
1669}
1670
1671
1672
1673
1674/***************************************************************
1675 *	tlan_handle_status_check
1676 *
1677 *	Returns:
1678 *		0 if Adapter check, 1 if Network Status check.
1679 *	Parms:
1680 *		dev		Device assigned the IRQ that was
1681 *				raised.
1682 *		host_int	The contents of the HOST_INT
1683 *				port.
1684 *
1685 *	This function handles Adapter Check/Network Status
1686 *	interrupts generated by the adapter.  It checks the
1687 *	vector in the HOST_INT register to determine if it is
1688 *	an Adapter Check interrupt.  If so, it resets the
1689 *	adapter.  Otherwise it clears the status registers
1690 *	and services the PHY.
1691 *
1692 **************************************************************/
1693
1694static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1695{
1696	struct tlan_priv	*priv = netdev_priv(dev);
1697	u32		ack;
1698	u32		error;
1699	u8		net_sts;
1700	u32		phy;
1701	u16		tlphy_ctl;
1702	u16		tlphy_sts;
1703
1704	ack = 1;
1705	if (host_int & TLAN_HI_IV_MASK) {
1706		netif_stop_queue(dev);
1707		error = inl(dev->base_addr + TLAN_CH_PARM);
1708		netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1709		tlan_read_and_clear_stats(dev, TLAN_RECORD);
1710		outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1711
1712		schedule_work(&priv->tlan_tqueue);
1713
1714		netif_wake_queue(dev);
1715		ack = 0;
1716	} else {
1717		TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1718		phy = priv->phy[priv->phy_num];
1719
1720		net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1721		if (net_sts) {
1722			tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1723			TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1724				 dev->name, (unsigned) net_sts);
1725		}
1726		if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1727			tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1728			tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1729			if (!(tlphy_sts & TLAN_TS_POLOK) &&
1730			    !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1731				tlphy_ctl |= TLAN_TC_SWAPOL;
1732				tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1733						   tlphy_ctl);
1734			} else if ((tlphy_sts & TLAN_TS_POLOK) &&
1735				   (tlphy_ctl & TLAN_TC_SWAPOL)) {
1736				tlphy_ctl &= ~TLAN_TC_SWAPOL;
1737				tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738						   tlphy_ctl);
1739			}
1740
1741			if (debug)
1742				tlan_phy_print(dev);
1743		}
1744	}
1745
1746	return ack;
1747
1748}
1749
1750
1751
1752
1753/***************************************************************
1754 *	tlan_handle_rx_eoc
1755 *
1756 *	Returns:
1757 *		1
1758 *	Parms:
1759 *		dev		Device assigned the IRQ that was
1760 *				raised.
1761 *		host_int	The contents of the HOST_INT
1762 *				port.
1763 *
1764 *	This driver is structured to determine EOC occurrences by
1765 *	reading the CSTAT member of the list structure.  Rx EOC
1766 *	interrupts are disabled via the DIO INTDIS register.
1767 *	However, TLAN chips before revision 3.0 didn't have this
1768 *	CSTAT member or a INTDIS register, so if this chip is
1769 *	pre-3.0, process EOC interrupts normally.
1770 *
1771 **************************************************************/
1772
1773static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1774{
1775	struct tlan_priv	*priv = netdev_priv(dev);
1776	dma_addr_t	head_list_phys;
1777	u32		ack = 1;
1778
1779	if (priv->tlan_rev < 0x30) {
1780		TLAN_DBG(TLAN_DEBUG_RX,
1781			 "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1782			 priv->rx_head, priv->rx_tail);
1783		head_list_phys = priv->rx_list_dma
1784			+ sizeof(struct tlan_list)*priv->rx_head;
1785		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1786		ack |= TLAN_HC_GO | TLAN_HC_RT;
1787		priv->rx_eoc_count++;
1788	}
1789
1790	return ack;
1791
1792}
1793
1794
1795
1796
1797/*****************************************************************************
1798******************************************************************************
1799
1800ThunderLAN driver timer function
1801
1802******************************************************************************
1803*****************************************************************************/
1804
1805
1806/***************************************************************
1807 *	tlan_timer
1808 *
1809 *	Returns:
1810 *		Nothing
1811 *	Parms:
1812 *		data	A value given to add timer when
1813 *			add_timer was called.
1814 *
1815 *	This function handles timed functionality for the
1816 *	TLAN driver.  The two current timer uses are for
1817 *	delaying for autonegotionation and driving the ACT LED.
1818 *	-	Autonegotiation requires being allowed about
1819 *		2 1/2 seconds before attempting to transmit a
1820 *		packet.  It would be a very bad thing to hang
1821 *		the kernel this long, so the driver doesn't
1822 *		allow transmission 'til after this time, for
1823 *		certain PHYs.  It would be much nicer if all
1824 *		PHYs were interrupt-capable like the internal
1825 *		PHY.
1826 *	-	The ACT LED, which shows adapter activity, is
1827 *		driven by the driver, and so must be left on
1828 *		for a short period to power up the LED so it
1829 *		can be seen.  This delay can be changed by
1830 *		changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1831 *		if desired.  100 ms  produces a slightly
1832 *		sluggish response.
1833 *
1834 **************************************************************/
1835
1836static void tlan_timer(struct timer_list *t)
1837{
1838	struct tlan_priv	*priv = from_timer(priv, t, timer);
1839	struct net_device	*dev = priv->dev;
1840	u32		elapsed;
1841	unsigned long	flags = 0;
1842
1843	priv->timer.function = NULL;
1844
1845	switch (priv->timer_type) {
1846	case TLAN_TIMER_PHY_PDOWN:
1847		tlan_phy_power_down(dev);
1848		break;
1849	case TLAN_TIMER_PHY_PUP:
1850		tlan_phy_power_up(dev);
1851		break;
1852	case TLAN_TIMER_PHY_RESET:
1853		tlan_phy_reset(dev);
1854		break;
1855	case TLAN_TIMER_PHY_START_LINK:
1856		tlan_phy_start_link(dev);
1857		break;
1858	case TLAN_TIMER_PHY_FINISH_AN:
1859		tlan_phy_finish_auto_neg(dev);
1860		break;
1861	case TLAN_TIMER_FINISH_RESET:
1862		tlan_finish_reset(dev);
1863		break;
1864	case TLAN_TIMER_ACTIVITY:
1865		spin_lock_irqsave(&priv->lock, flags);
1866		if (priv->timer.function == NULL) {
1867			elapsed = jiffies - priv->timer_set_at;
1868			if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1869				tlan_dio_write8(dev->base_addr,
1870						TLAN_LED_REG, TLAN_LED_LINK);
1871			} else  {
1872				priv->timer.expires = priv->timer_set_at
1873					+ TLAN_TIMER_ACT_DELAY;
1874				spin_unlock_irqrestore(&priv->lock, flags);
1875				add_timer(&priv->timer);
1876				break;
1877			}
1878		}
1879		spin_unlock_irqrestore(&priv->lock, flags);
1880		break;
1881	default:
1882		break;
1883	}
1884
1885}
1886
1887
1888/*****************************************************************************
1889******************************************************************************
1890
1891ThunderLAN driver adapter related routines
1892
1893******************************************************************************
1894*****************************************************************************/
1895
1896
1897/***************************************************************
1898 *	tlan_reset_lists
1899 *
1900 *	Returns:
1901 *		Nothing
1902 *	Parms:
1903 *		dev	The device structure with the list
1904 *			structures to be reset.
1905 *
1906 *	This routine sets the variables associated with managing
1907 *	the TLAN lists to their initial values.
1908 *
1909 **************************************************************/
1910
1911static void tlan_reset_lists(struct net_device *dev)
1912{
1913	struct tlan_priv *priv = netdev_priv(dev);
1914	int		i;
1915	struct tlan_list	*list;
1916	dma_addr_t	list_phys;
1917	struct sk_buff	*skb;
1918
1919	priv->tx_head = 0;
1920	priv->tx_tail = 0;
1921	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1922		list = priv->tx_list + i;
1923		list->c_stat = TLAN_CSTAT_UNUSED;
1924		list->buffer[0].address = 0;
1925		list->buffer[2].count = 0;
1926		list->buffer[2].address = 0;
1927		list->buffer[8].address = 0;
1928		list->buffer[9].address = 0;
1929	}
1930
1931	priv->rx_head = 0;
1932	priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1933	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1934		list = priv->rx_list + i;
1935		list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1936		list->c_stat = TLAN_CSTAT_READY;
1937		list->frame_size = TLAN_MAX_FRAME_SIZE;
1938		list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1939		skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1940		if (!skb)
1941			break;
1942
1943		list->buffer[0].address = pci_map_single(priv->pci_dev,
1944							 skb->data,
1945							 TLAN_MAX_FRAME_SIZE,
1946							 PCI_DMA_FROMDEVICE);
1947		tlan_store_skb(list, skb);
1948		list->buffer[1].count = 0;
1949		list->buffer[1].address = 0;
1950		list->forward = list_phys + sizeof(struct tlan_list);
1951	}
1952
1953	/* in case ran out of memory early, clear bits */
1954	while (i < TLAN_NUM_RX_LISTS) {
1955		tlan_store_skb(priv->rx_list + i, NULL);
1956		++i;
1957	}
1958	list->forward = 0;
1959
1960}
1961
1962
1963static void tlan_free_lists(struct net_device *dev)
1964{
1965	struct tlan_priv *priv = netdev_priv(dev);
1966	int		i;
1967	struct tlan_list	*list;
1968	struct sk_buff	*skb;
1969
1970	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1971		list = priv->tx_list + i;
1972		skb = tlan_get_skb(list);
1973		if (skb) {
1974			pci_unmap_single(
1975				priv->pci_dev,
1976				list->buffer[0].address,
1977				max(skb->len,
1978				    (unsigned int)TLAN_MIN_FRAME_SIZE),
1979				PCI_DMA_TODEVICE);
1980			dev_kfree_skb_any(skb);
1981			list->buffer[8].address = 0;
1982			list->buffer[9].address = 0;
1983		}
1984	}
1985
1986	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1987		list = priv->rx_list + i;
1988		skb = tlan_get_skb(list);
1989		if (skb) {
1990			pci_unmap_single(priv->pci_dev,
1991					 list->buffer[0].address,
1992					 TLAN_MAX_FRAME_SIZE,
1993					 PCI_DMA_FROMDEVICE);
1994			dev_kfree_skb_any(skb);
1995			list->buffer[8].address = 0;
1996			list->buffer[9].address = 0;
1997		}
1998	}
1999}
2000
2001
2002
2003
2004/***************************************************************
2005 *	tlan_print_dio
2006 *
2007 *	Returns:
2008 *		Nothing
2009 *	Parms:
2010 *		io_base		Base IO port of the device of
2011 *				which to print DIO registers.
2012 *
2013 *	This function prints out all the internal (DIO)
2014 *	registers of a TLAN chip.
2015 *
2016 **************************************************************/
2017
2018static void tlan_print_dio(u16 io_base)
2019{
2020	u32 data0, data1;
2021	int	i;
2022
2023	pr_info("Contents of internal registers for io base 0x%04hx\n",
2024		io_base);
2025	pr_info("Off.  +0        +4\n");
2026	for (i = 0; i < 0x4C; i += 8) {
2027		data0 = tlan_dio_read32(io_base, i);
2028		data1 = tlan_dio_read32(io_base, i + 0x4);
2029		pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2030	}
2031
2032}
2033
2034
2035
2036
2037/***************************************************************
2038 *	TLan_PrintList
2039 *
2040 *	Returns:
2041 *		Nothing
2042 *	Parms:
2043 *		list	A pointer to the struct tlan_list structure to
2044 *			be printed.
2045 *		type	A string to designate type of list,
2046 *			"Rx" or "Tx".
2047 *		num	The index of the list.
2048 *
2049 *	This function prints out the contents of the list
2050 *	pointed to by the list parameter.
2051 *
2052 **************************************************************/
2053
2054static void tlan_print_list(struct tlan_list *list, char *type, int num)
2055{
2056	int i;
2057
2058	pr_info("%s List %d at %p\n", type, num, list);
2059	pr_info("   Forward    = 0x%08x\n",  list->forward);
2060	pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2061	pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2062	/* for (i = 0; i < 10; i++) { */
2063	for (i = 0; i < 2; i++) {
2064		pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2065			i, list->buffer[i].count, list->buffer[i].address);
2066	}
2067
2068}
2069
2070
2071
2072
2073/***************************************************************
2074 *	tlan_read_and_clear_stats
2075 *
2076 *	Returns:
2077 *		Nothing
2078 *	Parms:
2079 *		dev	Pointer to device structure of adapter
2080 *			to which to read stats.
2081 *		record	Flag indicating whether to add
2082 *
2083 *	This functions reads all the internal status registers
2084 *	of the TLAN chip, which clears them as a side effect.
2085 *	It then either adds the values to the device's status
2086 *	struct, or discards them, depending on whether record
2087 *	is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2088 *
2089 **************************************************************/
2090
2091static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2092{
2093	u32		tx_good, tx_under;
2094	u32		rx_good, rx_over;
2095	u32		def_tx, crc, code;
2096	u32		multi_col, single_col;
2097	u32		excess_col, late_col, loss;
2098
2099	outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100	tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2101	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2102	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2103	tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2104
2105	outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2106	rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2107	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2108	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2109	rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110
2111	outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2112	def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2113	def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2114	crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2115	code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116
2117	outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2118	multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2119	multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2120	single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2121	single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2122
2123	outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2124	excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2125	late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2126	loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2127
2128	if (record) {
2129		dev->stats.rx_packets += rx_good;
2130		dev->stats.rx_errors  += rx_over + crc + code;
2131		dev->stats.tx_packets += tx_good;
2132		dev->stats.tx_errors  += tx_under + loss;
2133		dev->stats.collisions += multi_col
2134			+ single_col + excess_col + late_col;
2135
2136		dev->stats.rx_over_errors    += rx_over;
2137		dev->stats.rx_crc_errors     += crc;
2138		dev->stats.rx_frame_errors   += code;
2139
2140		dev->stats.tx_aborted_errors += tx_under;
2141		dev->stats.tx_carrier_errors += loss;
2142	}
2143
2144}
2145
2146
2147
2148
2149/***************************************************************
2150 *	TLan_Reset
2151 *
2152 *	Returns:
2153 *		0
2154 *	Parms:
2155 *		dev	Pointer to device structure of adapter
2156 *			to be reset.
2157 *
2158 *	This function resets the adapter and it's physical
2159 *	device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2160 *	Programmer's Guide" for details.  The routine tries to
2161 *	implement what is detailed there, though adjustments
2162 *	have been made.
2163 *
2164 **************************************************************/
2165
2166static void
2167tlan_reset_adapter(struct net_device *dev)
2168{
2169	struct tlan_priv	*priv = netdev_priv(dev);
2170	int		i;
2171	u32		addr;
2172	u32		data;
2173	u8		data8;
2174
2175	priv->tlan_full_duplex = false;
2176	priv->phy_online = 0;
2177	netif_carrier_off(dev);
2178
2179/*  1.	Assert reset bit. */
2180
2181	data = inl(dev->base_addr + TLAN_HOST_CMD);
2182	data |= TLAN_HC_AD_RST;
2183	outl(data, dev->base_addr + TLAN_HOST_CMD);
2184
2185	udelay(1000);
2186
2187/*  2.	Turn off interrupts. (Probably isn't necessary) */
2188
2189	data = inl(dev->base_addr + TLAN_HOST_CMD);
2190	data |= TLAN_HC_INT_OFF;
2191	outl(data, dev->base_addr + TLAN_HOST_CMD);
2192
2193/*  3.	Clear AREGs and HASHs. */
2194
2195	for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2196		tlan_dio_write32(dev->base_addr, (u16) i, 0);
2197
2198/*  4.	Setup NetConfig register. */
2199
2200	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2201	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2202
2203/*  5.	Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2204
2205	outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2206	outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2207
2208/*  6.	Unreset the MII by setting NMRST (in NetSio) to 1. */
2209
2210	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2211	addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2212	tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2213
2214/*  7.	Setup the remaining registers. */
2215
2216	if (priv->tlan_rev >= 0x30) {
2217		data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2218		tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2219	}
2220	tlan_phy_detect(dev);
2221	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2222
2223	if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2224		data |= TLAN_NET_CFG_BIT;
2225		if (priv->aui == 1) {
2226			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2227		} else if (priv->duplex == TLAN_DUPLEX_FULL) {
2228			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2229			priv->tlan_full_duplex = true;
2230		} else {
2231			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2232		}
2233	}
2234
2235	/* don't power down internal PHY if we're going to use it */
2236	if (priv->phy_num == 0 ||
2237	   (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2238		data |= TLAN_NET_CFG_PHY_EN;
2239	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2240
2241	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2242		tlan_finish_reset(dev);
2243	else
2244		tlan_phy_power_down(dev);
2245
2246}
2247
2248
2249
2250
2251static void
2252tlan_finish_reset(struct net_device *dev)
2253{
2254	struct tlan_priv	*priv = netdev_priv(dev);
2255	u8		data;
2256	u32		phy;
2257	u8		sio;
2258	u16		status;
2259	u16		partner;
2260	u16		tlphy_ctl;
2261	u16		tlphy_par;
2262	u16		tlphy_id1, tlphy_id2;
2263	int		i;
2264
2265	phy = priv->phy[priv->phy_num];
2266
2267	data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2268	if (priv->tlan_full_duplex)
2269		data |= TLAN_NET_CMD_DUPLEX;
2270	tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2271	data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2272	if (priv->phy_num == 0)
2273		data |= TLAN_NET_MASK_MASK7;
2274	tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2275	tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2276	tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2277	tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2278
2279	if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2280	    (priv->aui)) {
2281		status = MII_GS_LINK;
2282		netdev_info(dev, "Link forced\n");
2283	} else {
2284		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2285		udelay(1000);
2286		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2287		if (status & MII_GS_LINK) {
2288			/* We only support link info on Nat.Sem. PHY's */
2289			if ((tlphy_id1 == NAT_SEM_ID1) &&
2290			    (tlphy_id2 == NAT_SEM_ID2)) {
2291				tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2292					&partner);
2293				tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2294					&tlphy_par);
2295
2296				netdev_info(dev,
2297					"Link active, %s %uMbps %s-Duplex\n",
2298					!(tlphy_par & TLAN_PHY_AN_EN_STAT)
2299					? "forced" : "Autonegotiation enabled,",
2300					tlphy_par & TLAN_PHY_SPEED_100
2301					? 100 : 10,
2302					tlphy_par & TLAN_PHY_DUPLEX_FULL
2303					? "Full" : "Half");
2304
2305				if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2306					netdev_info(dev, "Partner capability:");
2307					for (i = 5; i < 10; i++)
2308						if (partner & (1 << i))
2309							pr_cont(" %s",
2310								media[i-5]);
2311					pr_cont("\n");
2312				}
2313			} else
2314				netdev_info(dev, "Link active\n");
2315			/* Enabling link beat monitoring */
2316			priv->media_timer.expires = jiffies + HZ;
2317			add_timer(&priv->media_timer);
2318		}
2319	}
2320
2321	if (priv->phy_num == 0) {
2322		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2323		tlphy_ctl |= TLAN_TC_INTEN;
2324		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2325		sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2326		sio |= TLAN_NET_SIO_MINTEN;
2327		tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2328	}
2329
2330	if (status & MII_GS_LINK) {
2331		tlan_set_mac(dev, 0, dev->dev_addr);
2332		priv->phy_online = 1;
2333		outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2334		if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2335			outb((TLAN_HC_REQ_INT >> 8),
2336			     dev->base_addr + TLAN_HOST_CMD + 1);
2337		outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2338		outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2339		tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2340		netif_carrier_on(dev);
2341	} else {
2342		netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2343		tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2344		return;
2345	}
2346	tlan_set_multicast_list(dev);
2347
2348}
2349
2350
2351
2352
2353/***************************************************************
2354 *	tlan_set_mac
2355 *
2356 *	Returns:
2357 *		Nothing
2358 *	Parms:
2359 *		dev	Pointer to device structure of adapter
2360 *			on which to change the AREG.
2361 *		areg	The AREG to set the address in (0 - 3).
2362 *		mac	A pointer to an array of chars.  Each
2363 *			element stores one byte of the address.
2364 *			IE, it isn't in ascii.
2365 *
2366 *	This function transfers a MAC address to one of the
2367 *	TLAN AREGs (address registers).  The TLAN chip locks
2368 *	the register on writing to offset 0 and unlocks the
2369 *	register after writing to offset 5.  If NULL is passed
2370 *	in mac, then the AREG is filled with 0's.
2371 *
2372 **************************************************************/
2373
2374static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2375{
2376	int i;
2377
2378	areg *= 6;
2379
2380	if (mac != NULL) {
2381		for (i = 0; i < 6; i++)
2382			tlan_dio_write8(dev->base_addr,
2383					TLAN_AREG_0 + areg + i, mac[i]);
2384	} else {
2385		for (i = 0; i < 6; i++)
2386			tlan_dio_write8(dev->base_addr,
2387					TLAN_AREG_0 + areg + i, 0);
2388	}
2389
2390}
2391
2392
2393
2394
2395/*****************************************************************************
2396******************************************************************************
2397
2398ThunderLAN driver PHY layer routines
2399
2400******************************************************************************
2401*****************************************************************************/
2402
2403
2404
2405/*********************************************************************
2406 *	tlan_phy_print
2407 *
2408 *	Returns:
2409 *		Nothing
2410 *	Parms:
2411 *		dev	A pointer to the device structure of the
2412 *			TLAN device having the PHYs to be detailed.
2413 *
2414 *	This function prints the registers a PHY (aka transceiver).
2415 *
2416 ********************************************************************/
2417
2418static void tlan_phy_print(struct net_device *dev)
2419{
2420	struct tlan_priv *priv = netdev_priv(dev);
2421	u16 i, data0, data1, data2, data3, phy;
2422
 
 
2423	phy = priv->phy[priv->phy_num];
2424
2425	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2426		netdev_info(dev, "Unmanaged PHY\n");
2427	} else if (phy <= TLAN_PHY_MAX_ADDR) {
2428		netdev_info(dev, "PHY 0x%02x\n", phy);
2429		pr_info("   Off.  +0     +1     +2     +3\n");
2430		for (i = 0; i < 0x20; i += 4) {
2431			tlan_mii_read_reg(dev, phy, i, &data0);
2432			tlan_mii_read_reg(dev, phy, i + 1, &data1);
2433			tlan_mii_read_reg(dev, phy, i + 2, &data2);
2434			tlan_mii_read_reg(dev, phy, i + 3, &data3);
2435			pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2436				i, data0, data1, data2, data3);
2437		}
2438	} else {
2439		netdev_info(dev, "Invalid PHY\n");
2440	}
2441
2442}
2443
 
 
 
 
2444
 
 
 
 
2445
2446
2447/*********************************************************************
2448 *	tlan_phy_detect
2449 *
2450 *	Returns:
2451 *		Nothing
2452 *	Parms:
2453 *		dev	A pointer to the device structure of the adapter
2454 *			for which the PHY needs determined.
2455 *
2456 *	So far I've found that adapters which have external PHYs
2457 *	may also use the internal PHY for part of the functionality.
2458 *	(eg, AUI/Thinnet).  This function finds out if this TLAN
2459 *	chip has an internal PHY, and then finds the first external
2460 *	PHY (starting from address 0) if it exists).
2461 *
2462 ********************************************************************/
2463
2464static void tlan_phy_detect(struct net_device *dev)
2465{
2466	struct tlan_priv *priv = netdev_priv(dev);
2467	u16		control;
2468	u16		hi;
2469	u16		lo;
2470	u32		phy;
2471
2472	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2473		priv->phy_num = 0xffff;
2474		return;
2475	}
2476
2477	tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2478
2479	if (hi != 0xffff)
2480		priv->phy[0] = TLAN_PHY_MAX_ADDR;
2481	else
2482		priv->phy[0] = TLAN_PHY_NONE;
2483
2484	priv->phy[1] = TLAN_PHY_NONE;
2485	for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2486		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2487		tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2488		tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2489		if ((control != 0xffff) ||
2490		    (hi != 0xffff) || (lo != 0xffff)) {
2491			TLAN_DBG(TLAN_DEBUG_GNRL,
2492				 "PHY found at %02x %04x %04x %04x\n",
2493				 phy, control, hi, lo);
2494			if ((priv->phy[1] == TLAN_PHY_NONE) &&
2495			    (phy != TLAN_PHY_MAX_ADDR)) {
2496				priv->phy[1] = phy;
2497			}
2498		}
2499	}
2500
2501	if (priv->phy[1] != TLAN_PHY_NONE)
2502		priv->phy_num = 1;
2503	else if (priv->phy[0] != TLAN_PHY_NONE)
2504		priv->phy_num = 0;
2505	else
2506		netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2507
2508}
2509
2510
2511
2512
2513static void tlan_phy_power_down(struct net_device *dev)
2514{
2515	struct tlan_priv	*priv = netdev_priv(dev);
2516	u16		value;
2517
2518	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2519	value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2520	tlan_mii_sync(dev->base_addr);
2521	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2522	if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2523		/* if using internal PHY, the external PHY must be powered on */
2524		if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2525			value = MII_GC_ISOLATE; /* just isolate it from MII */
2526		tlan_mii_sync(dev->base_addr);
2527		tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2528	}
2529
2530	/* Wait for 50 ms and powerup
2531	 * This is abitrary.  It is intended to make sure the
2532	 * transceiver settles.
2533	 */
2534	tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2535
2536}
2537
2538
2539
2540
2541static void tlan_phy_power_up(struct net_device *dev)
2542{
2543	struct tlan_priv	*priv = netdev_priv(dev);
2544	u16		value;
2545
2546	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2547	tlan_mii_sync(dev->base_addr);
2548	value = MII_GC_LOOPBK;
2549	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2550	tlan_mii_sync(dev->base_addr);
2551	/* Wait for 500 ms and reset the
2552	 * transceiver.  The TLAN docs say both 50 ms and
2553	 * 500 ms, so do the longer, just in case.
2554	 */
2555	tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2556
2557}
2558
2559
2560
2561
2562static void tlan_phy_reset(struct net_device *dev)
2563{
2564	struct tlan_priv	*priv = netdev_priv(dev);
2565	u16		phy;
2566	u16		value;
2567	unsigned long timeout = jiffies + HZ;
2568
2569	phy = priv->phy[priv->phy_num];
2570
2571	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2572	tlan_mii_sync(dev->base_addr);
2573	value = MII_GC_LOOPBK | MII_GC_RESET;
2574	tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2575	do {
2576		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2577		if (time_after(jiffies, timeout)) {
2578			netdev_err(dev, "PHY reset timeout\n");
2579			return;
2580		}
2581	} while (value & MII_GC_RESET);
2582
2583	/* Wait for 500 ms and initialize.
2584	 * I don't remember why I wait this long.
2585	 * I've changed this to 50ms, as it seems long enough.
2586	 */
2587	tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2588
2589}
2590
2591
2592
2593
2594static void tlan_phy_start_link(struct net_device *dev)
2595{
2596	struct tlan_priv	*priv = netdev_priv(dev);
2597	u16		ability;
2598	u16		control;
2599	u16		data;
2600	u16		phy;
2601	u16		status;
2602	u16		tctl;
2603
2604	phy = priv->phy[priv->phy_num];
2605	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2606	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2607	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2608
2609	if ((status & MII_GS_AUTONEG) &&
2610	    (!priv->aui)) {
2611		ability = status >> 11;
2612		if (priv->speed  == TLAN_SPEED_10 &&
2613		    priv->duplex == TLAN_DUPLEX_HALF) {
2614			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2615		} else if (priv->speed == TLAN_SPEED_10 &&
2616			   priv->duplex == TLAN_DUPLEX_FULL) {
2617			priv->tlan_full_duplex = true;
2618			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2619		} else if (priv->speed == TLAN_SPEED_100 &&
2620			   priv->duplex == TLAN_DUPLEX_HALF) {
2621			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2622		} else if (priv->speed == TLAN_SPEED_100 &&
2623			   priv->duplex == TLAN_DUPLEX_FULL) {
2624			priv->tlan_full_duplex = true;
2625			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2626		} else {
2627
2628			/* Set Auto-Neg advertisement */
2629			tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2630					   (ability << 5) | 1);
2631			/* Enablee Auto-Neg */
2632			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2633			/* Restart Auto-Neg */
2634			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2635			/* Wait for 4 sec for autonegotiation
2636			 * to complete.  The max spec time is less than this
2637			 * but the card need additional time to start AN.
2638			 * .5 sec should be plenty extra.
2639			 */
2640			netdev_info(dev, "Starting autonegotiation\n");
2641			tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2642			return;
2643		}
2644
2645	}
2646
2647	if ((priv->aui) && (priv->phy_num != 0)) {
2648		priv->phy_num = 0;
2649		data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2650			| TLAN_NET_CFG_PHY_EN;
2651		tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2652		tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2653		return;
2654	} else if (priv->phy_num == 0) {
2655		control = 0;
2656		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2657		if (priv->aui) {
2658			tctl |= TLAN_TC_AUISEL;
2659		} else {
2660			tctl &= ~TLAN_TC_AUISEL;
2661			if (priv->duplex == TLAN_DUPLEX_FULL) {
2662				control |= MII_GC_DUPLEX;
2663				priv->tlan_full_duplex = true;
2664			}
2665			if (priv->speed == TLAN_SPEED_100)
2666				control |= MII_GC_SPEEDSEL;
2667		}
2668		tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2669		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2670	}
2671
2672	/* Wait for 2 sec to give the transceiver time
2673	 * to establish link.
2674	 */
2675	tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2676
2677}
2678
2679
2680
2681
2682static void tlan_phy_finish_auto_neg(struct net_device *dev)
2683{
2684	struct tlan_priv	*priv = netdev_priv(dev);
2685	u16		an_adv;
2686	u16		an_lpa;
2687	u16		mode;
2688	u16		phy;
2689	u16		status;
2690
2691	phy = priv->phy[priv->phy_num];
2692
2693	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2694	udelay(1000);
2695	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2696
2697	if (!(status & MII_GS_AUTOCMPLT)) {
2698		/* Wait for 8 sec to give the process
2699		 * more time.  Perhaps we should fail after a while.
2700		 */
2701		tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2702		return;
2703	}
2704
2705	netdev_info(dev, "Autonegotiation complete\n");
2706	tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2707	tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2708	mode = an_adv & an_lpa & 0x03E0;
2709	if (mode & 0x0100)
2710		priv->tlan_full_duplex = true;
2711	else if (!(mode & 0x0080) && (mode & 0x0040))
2712		priv->tlan_full_duplex = true;
2713
2714	/* switch to internal PHY for 10 Mbps */
2715	if ((!(mode & 0x0180)) &&
2716	    (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2717	    (priv->phy_num != 0)) {
2718		priv->phy_num = 0;
2719		tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2720		return;
2721	}
2722
2723	if (priv->phy_num == 0) {
2724		if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2725		    (an_adv & an_lpa & 0x0040)) {
2726			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2727					   MII_GC_AUTOENB | MII_GC_DUPLEX);
2728			netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2729		} else {
2730			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2731					   MII_GC_AUTOENB);
2732			netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2733		}
2734	}
2735
2736	/* Wait for 100 ms.  No reason in partiticular.
2737	 */
2738	tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2739
2740}
2741
2742
2743/*********************************************************************
2744 *
2745 *     tlan_phy_monitor
2746 *
2747 *     Returns:
2748 *	      None
2749 *
2750 *     Params:
2751 *	      data	     The device structure of this device.
2752 *
2753 *
2754 *     This function monitors PHY condition by reading the status
2755 *     register via the MII bus, controls LINK LED and notifies the
2756 *     kernel about link state.
2757 *
2758 *******************************************************************/
2759
2760static void tlan_phy_monitor(struct timer_list *t)
2761{
2762	struct tlan_priv *priv = from_timer(priv, t, media_timer);
2763	struct net_device *dev = priv->dev;
2764	u16     phy;
2765	u16     phy_status;
2766
2767	phy = priv->phy[priv->phy_num];
2768
2769	/* Get PHY status register */
2770	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2771
2772	/* Check if link has been lost */
2773	if (!(phy_status & MII_GS_LINK)) {
2774		if (netif_carrier_ok(dev)) {
2775			printk(KERN_DEBUG "TLAN: %s has lost link\n",
2776			       dev->name);
2777			tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2778			netif_carrier_off(dev);
2779			if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2780				/* power down internal PHY */
2781				u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2782					   MII_GC_ISOLATE;
2783
2784				tlan_mii_sync(dev->base_addr);
2785				tlan_mii_write_reg(dev, priv->phy[0],
2786						   MII_GEN_CTL, data);
2787				/* set to external PHY */
2788				priv->phy_num = 1;
2789				/* restart autonegotiation */
2790				tlan_set_timer(dev, msecs_to_jiffies(400),
2791					       TLAN_TIMER_PHY_PDOWN);
2792				return;
2793			}
2794		}
2795	}
2796
2797	/* Link restablished? */
2798	if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2799		tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2800		printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2801		       dev->name);
2802		netif_carrier_on(dev);
2803	}
2804	priv->media_timer.expires = jiffies + HZ;
2805	add_timer(&priv->media_timer);
2806}
2807
2808
2809/*****************************************************************************
2810******************************************************************************
2811
2812ThunderLAN driver MII routines
2813
2814these routines are based on the information in chap. 2 of the
2815"ThunderLAN Programmer's Guide", pp. 15-24.
2816
2817******************************************************************************
2818*****************************************************************************/
2819
2820
2821/***************************************************************
2822 *	tlan_mii_read_reg
2823 *
2824 *	Returns:
2825 *		false	if ack received ok
2826 *		true	if no ack received or other error
2827 *
2828 *	Parms:
2829 *		dev		The device structure containing
2830 *				The io address and interrupt count
2831 *				for this device.
2832 *		phy		The address of the PHY to be queried.
2833 *		reg		The register whose contents are to be
2834 *				retrieved.
2835 *		val		A pointer to a variable to store the
2836 *				retrieved value.
2837 *
2838 *	This function uses the TLAN's MII bus to retrieve the contents
2839 *	of a given register on a PHY.  It sends the appropriate info
2840 *	and then reads the 16-bit register value from the MII bus via
2841 *	the TLAN SIO register.
2842 *
2843 **************************************************************/
2844
2845static bool
2846tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2847{
2848	u8	nack;
2849	u16	sio, tmp;
2850	u32	i;
2851	bool	err;
2852	int	minten;
2853	struct tlan_priv *priv = netdev_priv(dev);
2854	unsigned long flags = 0;
 
2855
2856	err = false;
2857	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2858	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2859
2860	if (!in_irq())
2861		spin_lock_irqsave(&priv->lock, flags);
2862
2863	tlan_mii_sync(dev->base_addr);
2864
2865	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2866	if (minten)
2867		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2868
2869	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
2870	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* read  (10b) */
2871	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
2872	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
2873
2874
2875	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);	/* change direction */
2876
2877	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* clock idle bit */
2878	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2879	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* wait 300ns */
2880
2881	nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);	/* check for ACK */
2882	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);		/* finish ACK */
2883	if (nack) {					/* no ACK, so fake it */
2884		for (i = 0; i < 16; i++) {
2885			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2886			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887		}
2888		tmp = 0xffff;
2889		err = true;
2890	} else {					/* ACK, so read data */
2891		for (tmp = 0, i = 0x8000; i; i >>= 1) {
2892			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2893			if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2894				tmp |= i;
2895			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2896		}
2897	}
2898
2899
2900	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* idle cycle */
2901	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2902
2903	if (minten)
2904		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2905
2906	*val = tmp;
2907
2908	if (!in_irq())
2909		spin_unlock_irqrestore(&priv->lock, flags);
2910
2911	return err;
2912
2913}
2914
 
 
 
 
 
2915
2916
 
 
 
2917
2918/***************************************************************
2919 *	tlan_mii_send_data
2920 *
2921 *	Returns:
2922 *		Nothing
2923 *	Parms:
2924 *		base_port	The base IO port of the adapter	in
2925 *				question.
2926 *		dev		The address of the PHY to be queried.
2927 *		data		The value to be placed on the MII bus.
2928 *		num_bits	The number of bits in data that are to
2929 *				be placed on the MII bus.
2930 *
2931 *	This function sends on sequence of bits on the MII
2932 *	configuration bus.
2933 *
2934 **************************************************************/
2935
2936static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2937{
2938	u16 sio;
2939	u32 i;
2940
2941	if (num_bits == 0)
2942		return;
2943
2944	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2945	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2946	tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2947
2948	for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2949		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2950		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2951		if (data & i)
2952			tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2953		else
2954			tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2955		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2956		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2957	}
2958
2959}
2960
2961
2962
2963
2964/***************************************************************
2965 *	TLan_MiiSync
2966 *
2967 *	Returns:
2968 *		Nothing
2969 *	Parms:
2970 *		base_port	The base IO port of the adapter in
2971 *				question.
2972 *
2973 *	This functions syncs all PHYs in terms of the MII configuration
2974 *	bus.
2975 *
2976 **************************************************************/
2977
2978static void tlan_mii_sync(u16 base_port)
2979{
2980	int i;
2981	u16 sio;
2982
2983	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2984	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2985
2986	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2987	for (i = 0; i < 32; i++) {
2988		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2989		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2990	}
2991
2992}
2993
2994
2995
2996
2997/***************************************************************
2998 *	tlan_mii_write_reg
2999 *
3000 *	Returns:
3001 *		Nothing
3002 *	Parms:
3003 *		dev		The device structure for the device
3004 *				to write to.
3005 *		phy		The address of the PHY to be written to.
3006 *		reg		The register whose contents are to be
3007 *				written.
3008 *		val		The value to be written to the register.
3009 *
3010 *	This function uses the TLAN's MII bus to write the contents of a
3011 *	given register on a PHY.  It sends the appropriate info and then
3012 *	writes the 16-bit register value from the MII configuration bus
3013 *	via the TLAN SIO register.
3014 *
3015 **************************************************************/
3016
3017static void
3018tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3019{
3020	u16	sio;
3021	int	minten;
3022	unsigned long flags = 0;
3023	struct tlan_priv *priv = netdev_priv(dev);
3024
 
 
3025	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3026	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3027
3028	if (!in_irq())
3029		spin_lock_irqsave(&priv->lock, flags);
3030
3031	tlan_mii_sync(dev->base_addr);
3032
3033	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3034	if (minten)
3035		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3036
3037	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
3038	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* write (01b) */
3039	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
3040	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
3041
3042	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* send ACK */
3043	tlan_mii_send_data(dev->base_addr, val, 16);	/* send data */
3044
3045	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);	/* idle cycle */
3046	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3047
3048	if (minten)
3049		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3050
3051	if (!in_irq())
3052		spin_unlock_irqrestore(&priv->lock, flags);
3053
3054}
3055
 
 
 
 
 
3056
 
 
 
 
3057
3058
3059/*****************************************************************************
3060******************************************************************************
3061
3062ThunderLAN driver eeprom routines
3063
3064the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3065EEPROM.  these functions are based on information in microchip's
3066data sheet.  I don't know how well this functions will work with
3067other Eeproms.
3068
3069******************************************************************************
3070*****************************************************************************/
3071
3072
3073/***************************************************************
3074 *	tlan_ee_send_start
3075 *
3076 *	Returns:
3077 *		Nothing
3078 *	Parms:
3079 *		io_base		The IO port base address for the
3080 *				TLAN device with the EEPROM to
3081 *				use.
3082 *
3083 *	This function sends a start cycle to an EEPROM attached
3084 *	to a TLAN chip.
3085 *
3086 **************************************************************/
3087
3088static void tlan_ee_send_start(u16 io_base)
3089{
3090	u16	sio;
3091
3092	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3093	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3094
3095	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3096	tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3097	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3098	tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3099	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3100
3101}
3102
3103
3104
3105
3106/***************************************************************
3107 *	tlan_ee_send_byte
3108 *
3109 *	Returns:
3110 *		If the correct ack was received, 0, otherwise 1
3111 *	Parms:	io_base		The IO port base address for the
3112 *				TLAN device with the EEPROM to
3113 *				use.
3114 *		data		The 8 bits of information to
3115 *				send to the EEPROM.
3116 *		stop		If TLAN_EEPROM_STOP is passed, a
3117 *				stop cycle is sent after the
3118 *				byte is sent after the ack is
3119 *				read.
3120 *
3121 *	This function sends a byte on the serial EEPROM line,
3122 *	driving the clock to send each bit. The function then
3123 *	reverses transmission direction and reads an acknowledge
3124 *	bit.
3125 *
3126 **************************************************************/
3127
3128static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3129{
3130	int	err;
3131	u8	place;
3132	u16	sio;
3133
3134	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3135	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3136
3137	/* Assume clock is low, tx is enabled; */
3138	for (place = 0x80; place != 0; place >>= 1) {
3139		if (place & data)
3140			tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3141		else
3142			tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3143		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3144		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3145	}
3146	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3147	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3148	err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3149	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3150	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3151
3152	if ((!err) && stop) {
3153		/* STOP, raise data while clock is high */
3154		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3155		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3157	}
3158
3159	return err;
3160
3161}
3162
3163
3164
3165
3166/***************************************************************
3167 *	tlan_ee_receive_byte
3168 *
3169 *	Returns:
3170 *		Nothing
3171 *	Parms:
3172 *		io_base		The IO port base address for the
3173 *				TLAN device with the EEPROM to
3174 *				use.
3175 *		data		An address to a char to hold the
3176 *				data sent from the EEPROM.
3177 *		stop		If TLAN_EEPROM_STOP is passed, a
3178 *				stop cycle is sent after the
3179 *				byte is received, and no ack is
3180 *				sent.
3181 *
3182 *	This function receives 8 bits of data from the EEPROM
3183 *	over the serial link.  It then sends and ack bit, or no
3184 *	ack and a stop bit.  This function is used to retrieve
3185 *	data after the address of a byte in the EEPROM has been
3186 *	sent.
3187 *
3188 **************************************************************/
3189
3190static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3191{
3192	u8  place;
3193	u16 sio;
3194
3195	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3196	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3197	*data = 0;
3198
3199	/* Assume clock is low, tx is enabled; */
3200	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3201	for (place = 0x80; place; place >>= 1) {
3202		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3203		if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3204			*data |= place;
3205		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3206	}
3207
3208	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3209	if (!stop) {
3210		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3211		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3212		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3213	} else {
3214		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);	/* no ack = 1 (?) */
3215		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3216		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3217		/* STOP, raise data while clock is high */
3218		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3219		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3221	}
3222
3223}
3224
3225
3226
3227
3228/***************************************************************
3229 *	tlan_ee_read_byte
3230 *
3231 *	Returns:
3232 *		No error = 0, else, the stage at which the error
3233 *		occurred.
3234 *	Parms:
3235 *		io_base		The IO port base address for the
3236 *				TLAN device with the EEPROM to
3237 *				use.
3238 *		ee_addr		The address of the byte in the
3239 *				EEPROM whose contents are to be
3240 *				retrieved.
3241 *		data		An address to a char to hold the
3242 *				data obtained from the EEPROM.
3243 *
3244 *	This function reads a byte of information from an byte
3245 *	cell in the EEPROM.
3246 *
3247 **************************************************************/
3248
3249static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3250{
3251	int err;
3252	struct tlan_priv *priv = netdev_priv(dev);
3253	unsigned long flags = 0;
3254	int ret = 0;
3255
3256	spin_lock_irqsave(&priv->lock, flags);
3257
3258	tlan_ee_send_start(dev->base_addr);
3259	err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3260	if (err) {
3261		ret = 1;
3262		goto fail;
3263	}
3264	err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3265	if (err) {
3266		ret = 2;
3267		goto fail;
3268	}
3269	tlan_ee_send_start(dev->base_addr);
3270	err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3271	if (err) {
3272		ret = 3;
3273		goto fail;
3274	}
3275	tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3276fail:
3277	spin_unlock_irqrestore(&priv->lock, flags);
3278
3279	return ret;
3280
3281}
3282
3283
3284
v6.8
   1/*******************************************************************************
   2 *
   3 *  Linux ThunderLAN Driver
   4 *
   5 *  tlan.c
   6 *  by James Banks
   7 *
   8 *  (C) 1997-1998 Caldera, Inc.
   9 *  (C) 1998 James Banks
  10 *  (C) 1999-2001 Torben Mathiasen
  11 *  (C) 2002 Samuel Chessman
  12 *
  13 *  This software may be used and distributed according to the terms
  14 *  of the GNU General Public License, incorporated herein by reference.
  15 *
  16 ** Useful (if not required) reading:
  17 *
  18 *		Texas Instruments, ThunderLAN Programmer's Guide,
  19 *			TI Literature Number SPWU013A
  20 *			available in PDF format from www.ti.com
  21 *		Level One, LXT901 and LXT970 Data Sheets
  22 *			available in PDF format from www.level1.com
  23 *		National Semiconductor, DP83840A Data Sheet
  24 *			available in PDF format from www.national.com
  25 *		Microchip Technology, 24C01A/02A/04A Data Sheet
  26 *			available in PDF format from www.microchip.com
  27 *
  28 ******************************************************************************/
  29
  30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32#include <linux/hardirq.h>
  33#include <linux/module.h>
  34#include <linux/init.h>
  35#include <linux/interrupt.h>
  36#include <linux/ioport.h>
  37#include <linux/eisa.h>
  38#include <linux/pci.h>
  39#include <linux/dma-mapping.h>
  40#include <linux/netdevice.h>
  41#include <linux/etherdevice.h>
  42#include <linux/delay.h>
  43#include <linux/spinlock.h>
  44#include <linux/workqueue.h>
  45#include <linux/mii.h>
  46
  47#include "tlan.h"
  48
  49
  50/* For removing EISA devices */
  51static	struct net_device	*tlan_eisa_devices;
  52
  53static	int		tlan_devices_installed;
  54
  55/* Set speed, duplex and aui settings */
  56static  int aui[MAX_TLAN_BOARDS];
  57static  int duplex[MAX_TLAN_BOARDS];
  58static  int speed[MAX_TLAN_BOARDS];
  59static  int boards_found;
  60module_param_array(aui, int, NULL, 0);
  61module_param_array(duplex, int, NULL, 0);
  62module_param_array(speed, int, NULL, 0);
  63MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
  64MODULE_PARM_DESC(duplex,
  65		 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
  66MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
  67
  68MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
  69MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
  70MODULE_LICENSE("GPL");
  71
  72/* Turn on debugging.
  73 * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details
  74 */
  75static  int		debug;
  76module_param(debug, int, 0);
  77MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
  78
  79static	const char tlan_signature[] = "TLAN";
  80static  const char tlan_banner[] = "ThunderLAN driver v1.17\n";
  81static  int tlan_have_pci;
  82static  int tlan_have_eisa;
  83
  84static const char * const media[] = {
  85	"10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
  86	"100BaseTx-FD", "100BaseT4", NULL
  87};
  88
  89static struct board {
  90	const char	*device_label;
  91	u32		flags;
  92	u16		addr_ofs;
  93} board_info[] = {
  94	{ "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  95	{ "Compaq Netelligent 10/100 TX PCI UTP",
  96	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
  97	{ "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
  98	{ "Compaq NetFlex-3/P",
  99	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 100	{ "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 101	{ "Compaq Netelligent Integrated 10/100 TX UTP",
 102	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 103	{ "Compaq Netelligent Dual 10/100 TX PCI UTP",
 104	  TLAN_ADAPTER_NONE, 0x83 },
 105	{ "Compaq Netelligent 10/100 TX Embedded UTP",
 106	  TLAN_ADAPTER_NONE, 0x83 },
 107	{ "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 108	{ "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
 109	  TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
 110	{ "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
 111	  TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
 112	{ "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 113	{ "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
 114	{ "Compaq NetFlex-3/E",
 115	  TLAN_ADAPTER_ACTIVITY_LED |	/* EISA card */
 116	  TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 117	{ "Compaq NetFlex-3/E",
 118	  TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 119};
 120
 121static const struct pci_device_id tlan_pci_tbl[] = {
 122	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 123	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 124	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 125	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 126	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 127	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 128	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 129	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 130	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 131	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 132	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 133	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 134	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 135	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 136	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 137	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 138	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 139	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 140	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 141	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 142	{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 143	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 144	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 145	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 146	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 147	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 148	{ 0,}
 149};
 150MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 151
 152static void	tlan_eisa_probe(void);
 153static void	tlan_eisa_cleanup(void);
 154static int      tlan_init(struct net_device *);
 155static int	tlan_open(struct net_device *dev);
 156static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
 157static irqreturn_t tlan_handle_interrupt(int, void *);
 158static int	tlan_close(struct net_device *);
 159static struct	net_device_stats *tlan_get_stats(struct net_device *);
 160static void	tlan_set_multicast_list(struct net_device *);
 161static int	tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 162static int      tlan_probe1(struct pci_dev *pdev, long ioaddr,
 163			    int irq, int rev, const struct pci_device_id *ent);
 164static void	tlan_tx_timeout(struct net_device *dev, unsigned int txqueue);
 165static void	tlan_tx_timeout_work(struct work_struct *work);
 166static int	tlan_init_one(struct pci_dev *pdev,
 167			      const struct pci_device_id *ent);
 168
 169static u32	tlan_handle_tx_eof(struct net_device *, u16);
 170static u32	tlan_handle_stat_overflow(struct net_device *, u16);
 171static u32	tlan_handle_rx_eof(struct net_device *, u16);
 172static u32	tlan_handle_dummy(struct net_device *, u16);
 173static u32	tlan_handle_tx_eoc(struct net_device *, u16);
 174static u32	tlan_handle_status_check(struct net_device *, u16);
 175static u32	tlan_handle_rx_eoc(struct net_device *, u16);
 176
 177static void	tlan_timer(struct timer_list *t);
 178static void	tlan_phy_monitor(struct timer_list *t);
 179
 180static void	tlan_reset_lists(struct net_device *);
 181static void	tlan_free_lists(struct net_device *);
 182static void	tlan_print_dio(u16);
 183static void	tlan_print_list(struct tlan_list *, char *, int);
 184static void	tlan_read_and_clear_stats(struct net_device *, int);
 185static void	tlan_reset_adapter(struct net_device *);
 186static void	tlan_finish_reset(struct net_device *);
 187static void	tlan_set_mac(struct net_device *, int areg, const char *mac);
 188
 189static void	__tlan_phy_print(struct net_device *);
 190static void	tlan_phy_print(struct net_device *);
 191static void	tlan_phy_detect(struct net_device *);
 192static void	tlan_phy_power_down(struct net_device *);
 193static void	tlan_phy_power_up(struct net_device *);
 194static void	tlan_phy_reset(struct net_device *);
 195static void	tlan_phy_start_link(struct net_device *);
 196static void	tlan_phy_finish_auto_neg(struct net_device *);
 197
 198/*
 199  static int	tlan_phy_nop(struct net_device *);
 200  static int	tlan_phy_internal_check(struct net_device *);
 201  static int	tlan_phy_internal_service(struct net_device *);
 202  static int	tlan_phy_dp83840a_check(struct net_device *);
 203*/
 204
 205static bool	__tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 206static void	tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
 207static void	tlan_mii_send_data(u16, u32, unsigned);
 208static void	tlan_mii_sync(u16);
 209static void	__tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 210static void	tlan_mii_write_reg(struct net_device *, u16, u16, u16);
 211
 212static void	tlan_ee_send_start(u16);
 213static int	tlan_ee_send_byte(u16, u8, int);
 214static void	tlan_ee_receive_byte(u16, u8 *, int);
 215static int	tlan_ee_read_byte(struct net_device *, u8, u8 *);
 216
 217
 218static inline void
 219tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
 220{
 221	unsigned long addr = (unsigned long)skb;
 222	tag->buffer[9].address = addr;
 223	tag->buffer[8].address = upper_32_bits(addr);
 224}
 225
 226static inline struct sk_buff *
 227tlan_get_skb(const struct tlan_list *tag)
 228{
 229	unsigned long addr;
 230
 231	addr = tag->buffer[9].address;
 232	addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
 233	return (struct sk_buff *) addr;
 234}
 235
 236static u32
 237(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
 238	NULL,
 239	tlan_handle_tx_eof,
 240	tlan_handle_stat_overflow,
 241	tlan_handle_rx_eof,
 242	tlan_handle_dummy,
 243	tlan_handle_tx_eoc,
 244	tlan_handle_status_check,
 245	tlan_handle_rx_eoc
 246};
 247
 248static void
 249tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
 250{
 251	struct tlan_priv *priv = netdev_priv(dev);
 252	unsigned long flags = 0;
 253
 254	spin_lock_irqsave(&priv->lock, flags);
 
 255	if (priv->timer.function != NULL &&
 256	    priv->timer_type != TLAN_TIMER_ACTIVITY) {
 257		spin_unlock_irqrestore(&priv->lock, flags);
 
 258		return;
 259	}
 260	priv->timer.function = tlan_timer;
 261	spin_unlock_irqrestore(&priv->lock, flags);
 
 262
 263	priv->timer_set_at = jiffies;
 264	priv->timer_type = type;
 265	mod_timer(&priv->timer, jiffies + ticks);
 266
 267}
 268
 269
 270/*****************************************************************************
 271******************************************************************************
 272
 273ThunderLAN driver primary functions
 274
 275these functions are more or less common to all linux network drivers.
 276
 277******************************************************************************
 278*****************************************************************************/
 279
 280
 281
 282
 283
 284/***************************************************************
 285 *	tlan_remove_one
 286 *
 287 *	Returns:
 288 *		Nothing
 289 *	Parms:
 290 *		None
 291 *
 292 *	Goes through the TLanDevices list and frees the device
 293 *	structs and memory associated with each device (lists
 294 *	and buffers).  It also ureserves the IO port regions
 295 *	associated with this device.
 296 *
 297 **************************************************************/
 298
 299
 300static void tlan_remove_one(struct pci_dev *pdev)
 301{
 302	struct net_device *dev = pci_get_drvdata(pdev);
 303	struct tlan_priv	*priv = netdev_priv(dev);
 304
 305	unregister_netdev(dev);
 306
 307	if (priv->dma_storage) {
 308		dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
 309				  priv->dma_storage, priv->dma_storage_dma);
 
 310	}
 311
 312#ifdef CONFIG_PCI
 313	pci_release_regions(pdev);
 314#endif
 315
 
 
 316	cancel_work_sync(&priv->tlan_tqueue);
 317	free_netdev(dev);
 318}
 319
 320static void tlan_start(struct net_device *dev)
 321{
 322	tlan_reset_lists(dev);
 323	/* NOTE: It might not be necessary to read the stats before a
 324	   reset if you don't care what the values are.
 325	*/
 326	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 327	tlan_reset_adapter(dev);
 328	netif_wake_queue(dev);
 329}
 330
 331static void tlan_stop(struct net_device *dev)
 332{
 333	struct tlan_priv *priv = netdev_priv(dev);
 334
 335	del_timer_sync(&priv->media_timer);
 336	tlan_read_and_clear_stats(dev, TLAN_RECORD);
 337	outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
 338	/* Reset and power down phy */
 339	tlan_reset_adapter(dev);
 340	if (priv->timer.function != NULL) {
 341		del_timer_sync(&priv->timer);
 342		priv->timer.function = NULL;
 343	}
 344}
 345
 346static int __maybe_unused tlan_suspend(struct device *dev_d)
 
 
 347{
 348	struct net_device *dev = dev_get_drvdata(dev_d);
 349
 350	if (netif_running(dev))
 351		tlan_stop(dev);
 352
 353	netif_device_detach(dev);
 
 
 
 
 354
 355	return 0;
 356}
 357
 358static int __maybe_unused tlan_resume(struct device *dev_d)
 359{
 360	struct net_device *dev = dev_get_drvdata(dev_d);
 
 
 
 
 
 
 361	netif_device_attach(dev);
 362
 363	if (netif_running(dev))
 364		tlan_start(dev);
 365
 366	return 0;
 367}
 368
 369static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume);
 
 
 
 
 
 
 370
 371static struct pci_driver tlan_driver = {
 372	.name		= "tlan",
 373	.id_table	= tlan_pci_tbl,
 374	.probe		= tlan_init_one,
 375	.remove		= tlan_remove_one,
 376	.driver.pm	= &tlan_pm_ops,
 
 377};
 378
 379static int __init tlan_probe(void)
 380{
 381	int rc = -ENODEV;
 382
 383	pr_info("%s", tlan_banner);
 384
 385	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 386
 387	/* Use new style PCI probing. Now the kernel will
 388	   do most of this for us */
 389	rc = pci_register_driver(&tlan_driver);
 390
 391	if (rc != 0) {
 392		pr_err("Could not register pci driver\n");
 393		goto err_out_pci_free;
 394	}
 395
 396	TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 397	tlan_eisa_probe();
 398
 399	pr_info("%d device%s installed, PCI: %d  EISA: %d\n",
 400		tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
 401		tlan_have_pci, tlan_have_eisa);
 402
 403	if (tlan_devices_installed == 0) {
 404		rc = -ENODEV;
 405		goto  err_out_pci_unreg;
 406	}
 407	return 0;
 408
 409err_out_pci_unreg:
 410	pci_unregister_driver(&tlan_driver);
 411err_out_pci_free:
 412	return rc;
 413}
 414
 415
 416static int tlan_init_one(struct pci_dev *pdev,
 417				   const struct pci_device_id *ent)
 418{
 419	return tlan_probe1(pdev, -1, -1, 0, ent);
 420}
 421
 422
 423/*
 424***************************************************************
 425*	tlan_probe1
 426*
 427*	Returns:
 428*		0 on success, error code on error
 429*	Parms:
 430*		none
 431*
 432*	The name is lower case to fit in with all the rest of
 433*	the netcard_probe names.  This function looks for
 434*	another TLan based adapter, setting it up with the
 435*	allocated device struct if one is found.
 436*	tlan_probe has been ported to the new net API and
 437*	now allocates its own device structure. This function
 438*	is also used by modules.
 439*
 440**************************************************************/
 441
 442static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
 443		       const struct pci_device_id *ent)
 444{
 445
 446	struct net_device  *dev;
 447	struct tlan_priv  *priv;
 448	u16		   device_id;
 449	int		   reg, rc = -ENODEV;
 450
 451#ifdef CONFIG_PCI
 452	if (pdev) {
 453		rc = pci_enable_device(pdev);
 454		if (rc)
 455			return rc;
 456
 457		rc = pci_request_regions(pdev, tlan_signature);
 458		if (rc) {
 459			pr_err("Could not reserve IO regions\n");
 460			goto err_out;
 461		}
 462	}
 463#endif  /*  CONFIG_PCI  */
 464
 465	dev = alloc_etherdev(sizeof(struct tlan_priv));
 466	if (dev == NULL) {
 467		rc = -ENOMEM;
 468		goto err_out_regions;
 469	}
 470	SET_NETDEV_DEV(dev, &pdev->dev);
 471
 472	priv = netdev_priv(dev);
 473
 474	priv->pci_dev = pdev;
 475	priv->dev = dev;
 476
 477	/* Is this a PCI device? */
 478	if (pdev) {
 479		u32		   pci_io_base = 0;
 480
 481		priv->adapter = &board_info[ent->driver_data];
 482
 483		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 484		if (rc) {
 485			pr_err("No suitable PCI mapping available\n");
 486			goto err_out_free_dev;
 487		}
 488
 489		for (reg = 0; reg <= 5; reg++) {
 490			if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 491				pci_io_base = pci_resource_start(pdev, reg);
 492				TLAN_DBG(TLAN_DEBUG_GNRL,
 493					 "IO mapping is available at %x.\n",
 494					 pci_io_base);
 495				break;
 496			}
 497		}
 498		if (!pci_io_base) {
 499			pr_err("No IO mappings available\n");
 500			rc = -EIO;
 501			goto err_out_free_dev;
 502		}
 503
 504		dev->base_addr = pci_io_base;
 505		dev->irq = pdev->irq;
 506		priv->adapter_rev = pdev->revision;
 507		pci_set_master(pdev);
 508		pci_set_drvdata(pdev, dev);
 509
 510	} else	{     /* EISA card */
 511		/* This is a hack. We need to know which board structure
 512		 * is suited for this adapter */
 513		device_id = inw(ioaddr + EISA_ID2);
 514		if (device_id == 0x20F1) {
 515			priv->adapter = &board_info[13]; /* NetFlex-3/E */
 516			priv->adapter_rev = 23;		/* TLAN 2.3 */
 517		} else {
 518			priv->adapter = &board_info[14];
 519			priv->adapter_rev = 10;		/* TLAN 1.0 */
 520		}
 521		dev->base_addr = ioaddr;
 522		dev->irq = irq;
 523	}
 524
 525	/* Kernel parameters */
 526	if (dev->mem_start) {
 527		priv->aui    = dev->mem_start & 0x01;
 528		priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
 529			: (dev->mem_start & 0x06) >> 1;
 530		priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
 531			: (dev->mem_start & 0x18) >> 3;
 532
 533		if (priv->speed == 0x1)
 534			priv->speed = TLAN_SPEED_10;
 535		else if (priv->speed == 0x2)
 536			priv->speed = TLAN_SPEED_100;
 537
 538		debug = priv->debug = dev->mem_end;
 539	} else {
 540		priv->aui    = aui[boards_found];
 541		priv->speed  = speed[boards_found];
 542		priv->duplex = duplex[boards_found];
 543		priv->debug = debug;
 544	}
 545
 546	/* This will be used when we get an adapter error from
 547	 * within our irq handler */
 548	INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
 549
 550	spin_lock_init(&priv->lock);
 551
 552	rc = tlan_init(dev);
 553	if (rc) {
 554		pr_err("Could not set up device\n");
 555		goto err_out_free_dev;
 556	}
 557
 558	rc = register_netdev(dev);
 559	if (rc) {
 560		pr_err("Could not register device\n");
 561		goto err_out_uninit;
 562	}
 563
 564
 565	tlan_devices_installed++;
 566	boards_found++;
 567
 568	/* pdev is NULL if this is an EISA device */
 569	if (pdev)
 570		tlan_have_pci++;
 571	else {
 572		priv->next_device = tlan_eisa_devices;
 573		tlan_eisa_devices = dev;
 574		tlan_have_eisa++;
 575	}
 576
 577	netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
 578		    (int)dev->irq,
 579		    (int)dev->base_addr,
 580		    priv->adapter->device_label,
 581		    priv->adapter_rev);
 582	return 0;
 583
 584err_out_uninit:
 585	dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
 586			  priv->dma_storage, priv->dma_storage_dma);
 587err_out_free_dev:
 588	free_netdev(dev);
 589err_out_regions:
 590#ifdef CONFIG_PCI
 591	if (pdev)
 592		pci_release_regions(pdev);
 593err_out:
 594#endif
 595	if (pdev)
 596		pci_disable_device(pdev);
 597	return rc;
 598}
 599
 600
 601static void tlan_eisa_cleanup(void)
 602{
 603	struct net_device *dev;
 604	struct tlan_priv *priv;
 605
 606	while (tlan_have_eisa) {
 607		dev = tlan_eisa_devices;
 608		priv = netdev_priv(dev);
 609		if (priv->dma_storage) {
 610			dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
 611					  priv->dma_storage,
 612					  priv->dma_storage_dma);
 613		}
 614		release_region(dev->base_addr, 0x10);
 615		unregister_netdev(dev);
 616		tlan_eisa_devices = priv->next_device;
 617		free_netdev(dev);
 618		tlan_have_eisa--;
 619	}
 620}
 621
 622
 623static void __exit tlan_exit(void)
 624{
 625	pci_unregister_driver(&tlan_driver);
 626
 627	if (tlan_have_eisa)
 628		tlan_eisa_cleanup();
 629
 630}
 631
 632
 633/* Module loading/unloading */
 634module_init(tlan_probe);
 635module_exit(tlan_exit);
 636
 637
 638
 639/**************************************************************
 640 *	tlan_eisa_probe
 641 *
 642 *	Returns: 0 on success, 1 otherwise
 643 *
 644 *	Parms:	 None
 645 *
 646 *
 647 *	This functions probes for EISA devices and calls
 648 *	TLan_probe1 when one is found.
 649 *
 650 *************************************************************/
 651
 652static void  __init tlan_eisa_probe(void)
 653{
 654	long	ioaddr;
 
 655	int	irq;
 656	u16	device_id;
 657
 658	if (!EISA_bus) {
 659		TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 660		return;
 661	}
 662
 663	/* Loop through all slots of the EISA bus */
 664	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 665
 666		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 667			 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
 668		TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
 669			 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
 670
 671
 672		TLAN_DBG(TLAN_DEBUG_PROBE,
 673			 "Probing for EISA adapter at IO: 0x%4x : ",
 674			 (int) ioaddr);
 675		if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
 676			goto out;
 677
 678		if (inw(ioaddr + EISA_ID) != 0x110E) {
 679			release_region(ioaddr, 0x10);
 680			goto out;
 681		}
 682
 683		device_id = inw(ioaddr + EISA_ID2);
 684		if (device_id !=  0x20F1 && device_id != 0x40F1) {
 685			release_region(ioaddr, 0x10);
 686			goto out;
 687		}
 688
 689		/* check if adapter is enabled */
 690		if (inb(ioaddr + EISA_CR) != 0x1) {
 691			release_region(ioaddr, 0x10);
 692			goto out2;
 693		}
 694
 695		if (debug == 0x10)
 696			pr_info("Found one\n");
 697
 698
 699		/* Get irq from board */
 700		switch (inb(ioaddr + 0xcc0)) {
 701		case(0x10):
 702			irq = 5;
 703			break;
 704		case(0x20):
 705			irq = 9;
 706			break;
 707		case(0x40):
 708			irq = 10;
 709			break;
 710		case(0x80):
 711			irq = 11;
 712			break;
 713		default:
 714			goto out;
 715		}
 716
 717
 718		/* Setup the newly found eisa adapter */
 719		tlan_probe1(NULL, ioaddr, irq, 12, NULL);
 
 720		continue;
 721
 722out:
 723		if (debug == 0x10)
 724			pr_info("None found\n");
 725		continue;
 726
 727out2:
 728		if (debug == 0x10)
 729			pr_info("Card found but it is not enabled, skipping\n");
 730		continue;
 731
 732	}
 733
 734}
 735
 736#ifdef CONFIG_NET_POLL_CONTROLLER
 737static void tlan_poll(struct net_device *dev)
 738{
 739	disable_irq(dev->irq);
 740	tlan_handle_interrupt(dev->irq, dev);
 741	enable_irq(dev->irq);
 742}
 743#endif
 744
 745static const struct net_device_ops tlan_netdev_ops = {
 746	.ndo_open		= tlan_open,
 747	.ndo_stop		= tlan_close,
 748	.ndo_start_xmit		= tlan_start_tx,
 749	.ndo_tx_timeout		= tlan_tx_timeout,
 750	.ndo_get_stats		= tlan_get_stats,
 751	.ndo_set_rx_mode	= tlan_set_multicast_list,
 752	.ndo_eth_ioctl		= tlan_ioctl,
 753	.ndo_set_mac_address	= eth_mac_addr,
 754	.ndo_validate_addr	= eth_validate_addr,
 755#ifdef CONFIG_NET_POLL_CONTROLLER
 756	.ndo_poll_controller	 = tlan_poll,
 757#endif
 758};
 759
 760static void tlan_get_drvinfo(struct net_device *dev,
 761			     struct ethtool_drvinfo *info)
 762{
 763	struct tlan_priv *priv = netdev_priv(dev);
 764
 765	strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 766	if (priv->pci_dev)
 767		strscpy(info->bus_info, pci_name(priv->pci_dev),
 768			sizeof(info->bus_info));
 769	else
 770		strscpy(info->bus_info, "EISA",	sizeof(info->bus_info));
 771}
 772
 773static int tlan_get_eeprom_len(struct net_device *dev)
 774{
 775	return TLAN_EEPROM_SIZE;
 776}
 777
 778static int tlan_get_eeprom(struct net_device *dev,
 779			   struct ethtool_eeprom *eeprom, u8 *data)
 780{
 781	int i;
 782
 783	for (i = 0; i < TLAN_EEPROM_SIZE; i++)
 784		if (tlan_ee_read_byte(dev, i, &data[i]))
 785			return -EIO;
 786
 787	return 0;
 788}
 789
 790static const struct ethtool_ops tlan_ethtool_ops = {
 791	.get_drvinfo	= tlan_get_drvinfo,
 792	.get_link	= ethtool_op_get_link,
 793	.get_eeprom_len	= tlan_get_eeprom_len,
 794	.get_eeprom	= tlan_get_eeprom,
 795};
 796
 797/***************************************************************
 798 *	tlan_init
 799 *
 800 *	Returns:
 801 *		0 on success, error code otherwise.
 802 *	Parms:
 803 *		dev	The structure of the device to be
 804 *			init'ed.
 805 *
 806 *	This function completes the initialization of the
 807 *	device structure and driver.  It reserves the IO
 808 *	addresses, allocates memory for the lists and bounce
 809 *	buffers, retrieves the MAC address from the eeprom
 810 *	and assignes the device's methods.
 811 *
 812 **************************************************************/
 813
 814static int tlan_init(struct net_device *dev)
 815{
 816	int		dma_size;
 817	int		err;
 818	int		i;
 819	struct tlan_priv	*priv;
 820	u8 addr[ETH_ALEN];
 821
 822	priv = netdev_priv(dev);
 823
 824	dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
 825		* (sizeof(struct tlan_list));
 826	priv->dma_storage = dma_alloc_coherent(&priv->pci_dev->dev, dma_size,
 827					       &priv->dma_storage_dma, GFP_KERNEL);
 
 828	priv->dma_size = dma_size;
 829
 830	if (priv->dma_storage == NULL) {
 831		pr_err("Could not allocate lists and buffers for %s\n",
 832		       dev->name);
 833		return -ENOMEM;
 834	}
 
 835	priv->rx_list = (struct tlan_list *)
 836		ALIGN((unsigned long)priv->dma_storage, 8);
 837	priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
 838	priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
 839	priv->tx_list_dma =
 840		priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
 841
 842	err = 0;
 843	for (i = 0; i < ETH_ALEN; i++)
 844		err |= tlan_ee_read_byte(dev,
 845					 (u8) priv->adapter->addr_ofs + i,
 846					 addr + i);
 847	if (err) {
 848		pr_err("%s: Error reading MAC from eeprom: %d\n",
 849		       dev->name, err);
 850	}
 851	/* Olicom OC-2325/OC-2326 have the address byte-swapped */
 852	if (priv->adapter->addr_ofs == 0xf8) {
 853		for (i = 0; i < ETH_ALEN; i += 2) {
 854			char tmp = addr[i];
 855			addr[i] = addr[i + 1];
 856			addr[i + 1] = tmp;
 857		}
 858	}
 859	eth_hw_addr_set(dev, addr);
 860
 861	netif_carrier_off(dev);
 862
 863	/* Device methods */
 864	dev->netdev_ops = &tlan_netdev_ops;
 865	dev->ethtool_ops = &tlan_ethtool_ops;
 866	dev->watchdog_timeo = TX_TIMEOUT;
 867
 868	return 0;
 869
 870}
 871
 872
 873
 874
 875/***************************************************************
 876 *	tlan_open
 877 *
 878 *	Returns:
 879 *		0 on success, error code otherwise.
 880 *	Parms:
 881 *		dev	Structure of device to be opened.
 882 *
 883 *	This routine puts the driver and TLAN adapter in a
 884 *	state where it is ready to send and receive packets.
 885 *	It allocates the IRQ, resets and brings the adapter
 886 *	out of reset, and allows interrupts.  It also delays
 887 *	the startup for autonegotiation or sends a Rx GO
 888 *	command to the adapter, as appropriate.
 889 *
 890 **************************************************************/
 891
 892static int tlan_open(struct net_device *dev)
 893{
 894	struct tlan_priv	*priv = netdev_priv(dev);
 895	int		err;
 896
 897	priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
 898	err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
 899			  dev->name, dev);
 900
 901	if (err) {
 902		netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
 903			   dev->irq);
 904		return err;
 905	}
 906
 907	timer_setup(&priv->timer, NULL, 0);
 908	timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
 909
 910	tlan_start(dev);
 911
 912	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
 913		 dev->name, priv->tlan_rev);
 914
 915	return 0;
 916
 917}
 918
 919
 920
 921/**************************************************************
 922 *	tlan_ioctl
 923 *
 924 *	Returns:
 925 *		0 on success, error code otherwise
 926 *	Params:
 927 *		dev	structure of device to receive ioctl.
 928 *
 929 *		rq	ifreq structure to hold userspace data.
 930 *
 931 *		cmd	ioctl command.
 932 *
 933 *
 934 *************************************************************/
 935
 936static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 937{
 938	struct tlan_priv *priv = netdev_priv(dev);
 939	struct mii_ioctl_data *data = if_mii(rq);
 940	u32 phy   = priv->phy[priv->phy_num];
 941
 942	if (!priv->phy_online)
 943		return -EAGAIN;
 944
 945	switch (cmd) {
 946	case SIOCGMIIPHY:		/* get address of MII PHY in use. */
 947		data->phy_id = phy;
 948		fallthrough;
 949
 950
 951	case SIOCGMIIREG:		/* read MII PHY register. */
 952		tlan_mii_read_reg(dev, data->phy_id & 0x1f,
 953				  data->reg_num & 0x1f, &data->val_out);
 954		return 0;
 955
 956
 957	case SIOCSMIIREG:		/* write MII PHY register. */
 958		tlan_mii_write_reg(dev, data->phy_id & 0x1f,
 959				   data->reg_num & 0x1f, data->val_in);
 960		return 0;
 961	default:
 962		return -EOPNOTSUPP;
 963	}
 964}
 965
 966
 967/***************************************************************
 968 *	tlan_tx_timeout
 969 *
 970 *	Returns: nothing
 971 *
 972 *	Params:
 973 *		dev	structure of device which timed out
 974 *			during transmit.
 975 *
 976 **************************************************************/
 977
 978static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
 979{
 980
 981	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
 982
 983	/* Ok so we timed out, lets see what we can do about it...*/
 984	tlan_free_lists(dev);
 985	tlan_reset_lists(dev);
 986	tlan_read_and_clear_stats(dev, TLAN_IGNORE);
 987	tlan_reset_adapter(dev);
 988	netif_trans_update(dev); /* prevent tx timeout */
 989	netif_wake_queue(dev);
 990
 991}
 992
 993
 994/***************************************************************
 995 *	tlan_tx_timeout_work
 996 *
 997 *	Returns: nothing
 998 *
 999 *	Params:
1000 *		work	work item of device which timed out
1001 *
1002 **************************************************************/
1003
1004static void tlan_tx_timeout_work(struct work_struct *work)
1005{
1006	struct tlan_priv	*priv =
1007		container_of(work, struct tlan_priv, tlan_tqueue);
1008
1009	tlan_tx_timeout(priv->dev, UINT_MAX);
1010}
1011
1012
1013
1014/***************************************************************
1015 *	tlan_start_tx
1016 *
1017 *	Returns:
1018 *		0 on success, non-zero on failure.
1019 *	Parms:
1020 *		skb	A pointer to the sk_buff containing the
1021 *			frame to be sent.
1022 *		dev	The device to send the data on.
1023 *
1024 *	This function adds a frame to the Tx list to be sent
1025 *	ASAP.  First it	verifies that the adapter is ready and
1026 *	there is room in the queue.  Then it sets up the next
1027 *	available list, copies the frame to the	corresponding
1028 *	buffer.  If the adapter Tx channel is idle, it gives
1029 *	the adapter a Tx Go command on the list, otherwise it
1030 *	sets the forward address of the previous list to point
1031 *	to this one.  Then it frees the sk_buff.
1032 *
1033 **************************************************************/
1034
1035static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1036{
1037	struct tlan_priv *priv = netdev_priv(dev);
1038	dma_addr_t	tail_list_phys;
1039	struct tlan_list	*tail_list;
1040	unsigned long	flags;
1041	unsigned int    txlen;
1042
1043	if (!priv->phy_online) {
1044		TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1045			 dev->name);
1046		dev_kfree_skb_any(skb);
1047		return NETDEV_TX_OK;
1048	}
1049
1050	if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1051		return NETDEV_TX_OK;
1052	txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1053
1054	tail_list = priv->tx_list + priv->tx_tail;
1055	tail_list_phys =
1056		priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1057
1058	if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1059		TLAN_DBG(TLAN_DEBUG_TX,
1060			 "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1061			 dev->name, priv->tx_head, priv->tx_tail);
1062		netif_stop_queue(dev);
1063		priv->tx_busy_count++;
1064		return NETDEV_TX_BUSY;
1065	}
1066
1067	tail_list->forward = 0;
1068
1069	tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1070						      skb->data, txlen,
1071						      DMA_TO_DEVICE);
1072	tlan_store_skb(tail_list, skb);
1073
1074	tail_list->frame_size = (u16) txlen;
1075	tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1076	tail_list->buffer[1].count = 0;
1077	tail_list->buffer[1].address = 0;
1078
1079	spin_lock_irqsave(&priv->lock, flags);
1080	tail_list->c_stat = TLAN_CSTAT_READY;
1081	if (!priv->tx_in_progress) {
1082		priv->tx_in_progress = 1;
1083		TLAN_DBG(TLAN_DEBUG_TX,
1084			 "TRANSMIT:  Starting TX on buffer %d\n",
1085			 priv->tx_tail);
1086		outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1087		outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1088	} else {
1089		TLAN_DBG(TLAN_DEBUG_TX,
1090			 "TRANSMIT:  Adding buffer %d to TX channel\n",
1091			 priv->tx_tail);
1092		if (priv->tx_tail == 0) {
1093			(priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1094				= tail_list_phys;
1095		} else {
1096			(priv->tx_list + (priv->tx_tail - 1))->forward
1097				= tail_list_phys;
1098		}
1099	}
1100	spin_unlock_irqrestore(&priv->lock, flags);
1101
1102	CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1103
1104	return NETDEV_TX_OK;
1105
1106}
1107
1108
1109
1110
1111/***************************************************************
1112 *	tlan_handle_interrupt
1113 *
1114 *	Returns:
1115 *		Nothing
1116 *	Parms:
1117 *		irq	The line on which the interrupt
1118 *			occurred.
1119 *		dev_id	A pointer to the device assigned to
1120 *			this irq line.
1121 *
1122 *	This function handles an interrupt generated by its
1123 *	assigned TLAN adapter.  The function deactivates
1124 *	interrupts on its adapter, records the type of
1125 *	interrupt, executes the appropriate subhandler, and
1126 *	acknowdges the interrupt to the adapter (thus
1127 *	re-enabling adapter interrupts.
1128 *
1129 **************************************************************/
1130
1131static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1132{
1133	struct net_device	*dev = dev_id;
1134	struct tlan_priv *priv = netdev_priv(dev);
1135	u16		host_int;
1136	u16		type;
1137
1138	spin_lock(&priv->lock);
1139
1140	host_int = inw(dev->base_addr + TLAN_HOST_INT);
1141	type = (host_int & TLAN_HI_IT_MASK) >> 2;
1142	if (type) {
1143		u32	ack;
1144		u32	host_cmd;
1145
1146		outw(host_int, dev->base_addr + TLAN_HOST_INT);
1147		ack = tlan_int_vector[type](dev, host_int);
1148
1149		if (ack) {
1150			host_cmd = TLAN_HC_ACK | ack | (type << 18);
1151			outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1152		}
1153	}
1154
1155	spin_unlock(&priv->lock);
1156
1157	return IRQ_RETVAL(type);
1158}
1159
1160
1161
1162
1163/***************************************************************
1164 *	tlan_close
1165 *
1166 *	Returns:
1167 *		An error code.
1168 *	Parms:
1169 *		dev	The device structure of the device to
1170 *			close.
1171 *
1172 *	This function shuts down the adapter.  It records any
1173 *	stats, puts the adapter into reset state, deactivates
1174 *	its time as needed, and	frees the irq it is using.
1175 *
1176 **************************************************************/
1177
1178static int tlan_close(struct net_device *dev)
1179{
1180	tlan_stop(dev);
1181
1182	free_irq(dev->irq, dev);
1183	tlan_free_lists(dev);
1184	TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1185
1186	return 0;
1187
1188}
1189
1190
1191
1192
1193/***************************************************************
1194 *	tlan_get_stats
1195 *
1196 *	Returns:
1197 *		A pointer to the device's statistics structure.
1198 *	Parms:
1199 *		dev	The device structure to return the
1200 *			stats for.
1201 *
1202 *	This function updates the devices statistics by reading
1203 *	the TLAN chip's onboard registers.  Then it returns the
1204 *	address of the statistics structure.
1205 *
1206 **************************************************************/
1207
1208static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1209{
1210	struct tlan_priv	*priv = netdev_priv(dev);
1211	int i;
1212
1213	/* Should only read stats if open ? */
1214	tlan_read_and_clear_stats(dev, TLAN_RECORD);
1215
1216	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1217		 priv->rx_eoc_count);
1218	TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1219		 priv->tx_busy_count);
1220	if (debug & TLAN_DEBUG_GNRL) {
1221		tlan_print_dio(dev->base_addr);
1222		tlan_phy_print(dev);
1223	}
1224	if (debug & TLAN_DEBUG_LIST) {
1225		for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1226			tlan_print_list(priv->rx_list + i, "RX", i);
1227		for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1228			tlan_print_list(priv->tx_list + i, "TX", i);
1229	}
1230
1231	return &dev->stats;
1232
1233}
1234
1235
1236
1237
1238/***************************************************************
1239 *	tlan_set_multicast_list
1240 *
1241 *	Returns:
1242 *		Nothing
1243 *	Parms:
1244 *		dev	The device structure to set the
1245 *			multicast list for.
1246 *
1247 *	This function sets the TLAN adaptor to various receive
1248 *	modes.  If the IFF_PROMISC flag is set, promiscuous
1249 *	mode is acitviated.  Otherwise,	promiscuous mode is
1250 *	turned off.  If the IFF_ALLMULTI flag is set, then
1251 *	the hash table is set to receive all group addresses.
1252 *	Otherwise, the first three multicast addresses are
1253 *	stored in AREG_1-3, and the rest are selected via the
1254 *	hash table, as necessary.
1255 *
1256 **************************************************************/
1257
1258static void tlan_set_multicast_list(struct net_device *dev)
1259{
1260	struct netdev_hw_addr *ha;
1261	u32			hash1 = 0;
1262	u32			hash2 = 0;
1263	int			i;
1264	u32			offset;
1265	u8			tmp;
1266
1267	if (dev->flags & IFF_PROMISC) {
1268		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1269		tlan_dio_write8(dev->base_addr,
1270				TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1271	} else {
1272		tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1273		tlan_dio_write8(dev->base_addr,
1274				TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1275		if (dev->flags & IFF_ALLMULTI) {
1276			for (i = 0; i < 3; i++)
1277				tlan_set_mac(dev, i + 1, NULL);
1278			tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1279					 0xffffffff);
1280			tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1281					 0xffffffff);
1282		} else {
1283			i = 0;
1284			netdev_for_each_mc_addr(ha, dev) {
1285				if (i < 3) {
1286					tlan_set_mac(dev, i + 1,
1287						     (char *) &ha->addr);
1288				} else {
1289					offset =
1290						tlan_hash_func((u8 *)&ha->addr);
1291					if (offset < 32)
1292						hash1 |= (1 << offset);
1293					else
1294						hash2 |= (1 << (offset - 32));
1295				}
1296				i++;
1297			}
1298			for ( ; i < 3; i++)
1299				tlan_set_mac(dev, i + 1, NULL);
1300			tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1301			tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1302		}
1303	}
1304
1305}
1306
1307
1308
1309/*****************************************************************************
1310******************************************************************************
1311
1312ThunderLAN driver interrupt vectors and table
1313
1314please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1315Programmer's Guide" for more informations on handling interrupts
1316generated by TLAN based adapters.
1317
1318******************************************************************************
1319*****************************************************************************/
1320
1321
1322
1323
1324/***************************************************************
1325 *	tlan_handle_tx_eof
1326 *
1327 *	Returns:
1328 *		1
1329 *	Parms:
1330 *		dev		Device assigned the IRQ that was
1331 *				raised.
1332 *		host_int	The contents of the HOST_INT
1333 *				port.
1334 *
1335 *	This function handles Tx EOF interrupts which are raised
1336 *	by the adapter when it has completed sending the
1337 *	contents of a buffer.  If detemines which list/buffer
1338 *	was completed and resets it.  If the buffer was the last
1339 *	in the channel (EOC), then the function checks to see if
1340 *	another buffer is ready to send, and if so, sends a Tx
1341 *	Go command.  Finally, the driver activates/continues the
1342 *	activity LED.
1343 *
1344 **************************************************************/
1345
1346static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1347{
1348	struct tlan_priv	*priv = netdev_priv(dev);
1349	int		eoc = 0;
1350	struct tlan_list	*head_list;
1351	dma_addr_t	head_list_phys;
1352	u32		ack = 0;
1353	u16		tmp_c_stat;
1354
1355	TLAN_DBG(TLAN_DEBUG_TX,
1356		 "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1357		 priv->tx_head, priv->tx_tail);
1358	head_list = priv->tx_list + priv->tx_head;
1359
1360	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1361	       && (ack < 255)) {
1362		struct sk_buff *skb = tlan_get_skb(head_list);
1363
1364		ack++;
1365		dma_unmap_single(&priv->pci_dev->dev,
1366				 head_list->buffer[0].address,
1367				 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1368				 DMA_TO_DEVICE);
1369		dev_kfree_skb_any(skb);
1370		head_list->buffer[8].address = 0;
1371		head_list->buffer[9].address = 0;
1372
1373		if (tmp_c_stat & TLAN_CSTAT_EOC)
1374			eoc = 1;
1375
1376		dev->stats.tx_bytes += head_list->frame_size;
1377
1378		head_list->c_stat = TLAN_CSTAT_UNUSED;
1379		netif_start_queue(dev);
1380		CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1381		head_list = priv->tx_list + priv->tx_head;
1382	}
1383
1384	if (!ack)
1385		netdev_info(dev,
1386			    "Received interrupt for uncompleted TX frame\n");
1387
1388	if (eoc) {
1389		TLAN_DBG(TLAN_DEBUG_TX,
1390			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d)\n",
1391			 priv->tx_head, priv->tx_tail);
1392		head_list = priv->tx_list + priv->tx_head;
1393		head_list_phys = priv->tx_list_dma
1394			+ sizeof(struct tlan_list)*priv->tx_head;
1395		if ((head_list->c_stat & TLAN_CSTAT_READY)
1396		    == TLAN_CSTAT_READY) {
1397			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1398			ack |= TLAN_HC_GO;
1399		} else {
1400			priv->tx_in_progress = 0;
1401		}
1402	}
1403
1404	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1405		tlan_dio_write8(dev->base_addr,
1406				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1407		if (priv->timer.function == NULL) {
1408			priv->timer.function = tlan_timer;
1409			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1410			priv->timer_set_at = jiffies;
1411			priv->timer_type = TLAN_TIMER_ACTIVITY;
1412			add_timer(&priv->timer);
1413		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1414			priv->timer_set_at = jiffies;
1415		}
1416	}
1417
1418	return ack;
1419
1420}
1421
1422
1423
1424
1425/***************************************************************
1426 *	TLan_HandleStatOverflow
1427 *
1428 *	Returns:
1429 *		1
1430 *	Parms:
1431 *		dev		Device assigned the IRQ that was
1432 *				raised.
1433 *		host_int	The contents of the HOST_INT
1434 *				port.
1435 *
1436 *	This function handles the Statistics Overflow interrupt
1437 *	which means that one or more of the TLAN statistics
1438 *	registers has reached 1/2 capacity and needs to be read.
1439 *
1440 **************************************************************/
1441
1442static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1443{
1444	tlan_read_and_clear_stats(dev, TLAN_RECORD);
1445
1446	return 1;
1447
1448}
1449
1450
1451
1452
1453/***************************************************************
1454 *	TLan_HandleRxEOF
1455 *
1456 *	Returns:
1457 *		1
1458 *	Parms:
1459 *		dev		Device assigned the IRQ that was
1460 *				raised.
1461 *		host_int	The contents of the HOST_INT
1462 *				port.
1463 *
1464 *	This function handles the Rx EOF interrupt which
1465 *	indicates a frame has been received by the adapter from
1466 *	the net and the frame has been transferred to memory.
1467 *	The function determines the bounce buffer the frame has
1468 *	been loaded into, creates a new sk_buff big enough to
1469 *	hold the frame, and sends it to protocol stack.  It
1470 *	then resets the used buffer and appends it to the end
1471 *	of the list.  If the frame was the last in the Rx
1472 *	channel (EOC), the function restarts the receive channel
1473 *	by sending an Rx Go command to the adapter.  Then it
1474 *	activates/continues the activity LED.
1475 *
1476 **************************************************************/
1477
1478static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1479{
1480	struct tlan_priv	*priv = netdev_priv(dev);
1481	u32		ack = 0;
1482	int		eoc = 0;
1483	struct tlan_list	*head_list;
1484	struct sk_buff	*skb;
1485	struct tlan_list	*tail_list;
1486	u16		tmp_c_stat;
1487	dma_addr_t	head_list_phys;
1488
1489	TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE:  handling RX EOF (Head=%d Tail=%d)\n",
1490		 priv->rx_head, priv->rx_tail);
1491	head_list = priv->rx_list + priv->rx_head;
1492	head_list_phys =
1493		priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1494
1495	while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1496	       && (ack < 255)) {
1497		dma_addr_t frame_dma = head_list->buffer[0].address;
1498		u32 frame_size = head_list->frame_size;
1499		struct sk_buff *new_skb;
1500
1501		ack++;
1502		if (tmp_c_stat & TLAN_CSTAT_EOC)
1503			eoc = 1;
1504
1505		new_skb = netdev_alloc_skb_ip_align(dev,
1506						    TLAN_MAX_FRAME_SIZE + 5);
1507		if (!new_skb)
1508			goto drop_and_reuse;
1509
1510		skb = tlan_get_skb(head_list);
1511		dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1512				 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1513		skb_put(skb, frame_size);
1514
1515		dev->stats.rx_bytes += frame_size;
1516
1517		skb->protocol = eth_type_trans(skb, dev);
1518		netif_rx(skb);
1519
1520		head_list->buffer[0].address =
1521			dma_map_single(&priv->pci_dev->dev, new_skb->data,
1522				       TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1523
1524		tlan_store_skb(head_list, new_skb);
1525drop_and_reuse:
1526		head_list->forward = 0;
1527		head_list->c_stat = 0;
1528		tail_list = priv->rx_list + priv->rx_tail;
1529		tail_list->forward = head_list_phys;
1530
1531		CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1532		CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1533		head_list = priv->rx_list + priv->rx_head;
1534		head_list_phys = priv->rx_list_dma
1535			+ sizeof(struct tlan_list)*priv->rx_head;
1536	}
1537
1538	if (!ack)
1539		netdev_info(dev,
1540			    "Received interrupt for uncompleted RX frame\n");
1541
1542
1543	if (eoc) {
1544		TLAN_DBG(TLAN_DEBUG_RX,
1545			 "RECEIVE:  handling RX EOC (Head=%d Tail=%d)\n",
1546			 priv->rx_head, priv->rx_tail);
1547		head_list = priv->rx_list + priv->rx_head;
1548		head_list_phys = priv->rx_list_dma
1549			+ sizeof(struct tlan_list)*priv->rx_head;
1550		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1551		ack |= TLAN_HC_GO | TLAN_HC_RT;
1552		priv->rx_eoc_count++;
1553	}
1554
1555	if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1556		tlan_dio_write8(dev->base_addr,
1557				TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1558		if (priv->timer.function == NULL)  {
1559			priv->timer.function = tlan_timer;
1560			priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1561			priv->timer_set_at = jiffies;
1562			priv->timer_type = TLAN_TIMER_ACTIVITY;
1563			add_timer(&priv->timer);
1564		} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1565			priv->timer_set_at = jiffies;
1566		}
1567	}
1568
1569	return ack;
1570
1571}
1572
1573
1574
1575
1576/***************************************************************
1577 *	tlan_handle_dummy
1578 *
1579 *	Returns:
1580 *		1
1581 *	Parms:
1582 *		dev		Device assigned the IRQ that was
1583 *				raised.
1584 *		host_int	The contents of the HOST_INT
1585 *				port.
1586 *
1587 *	This function handles the Dummy interrupt, which is
1588 *	raised whenever a test interrupt is generated by setting
1589 *	the Req_Int bit of HOST_CMD to 1.
1590 *
1591 **************************************************************/
1592
1593static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1594{
1595	netdev_info(dev, "Test interrupt\n");
1596	return 1;
1597
1598}
1599
1600
1601
1602
1603/***************************************************************
1604 *	tlan_handle_tx_eoc
1605 *
1606 *	Returns:
1607 *		1
1608 *	Parms:
1609 *		dev		Device assigned the IRQ that was
1610 *				raised.
1611 *		host_int	The contents of the HOST_INT
1612 *				port.
1613 *
1614 *	This driver is structured to determine EOC occurrences by
1615 *	reading the CSTAT member of the list structure.  Tx EOC
1616 *	interrupts are disabled via the DIO INTDIS register.
1617 *	However, TLAN chips before revision 3.0 didn't have this
1618 *	functionality, so process EOC events if this is the
1619 *	case.
1620 *
1621 **************************************************************/
1622
1623static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1624{
1625	struct tlan_priv	*priv = netdev_priv(dev);
1626	struct tlan_list		*head_list;
1627	dma_addr_t		head_list_phys;
1628	u32			ack = 1;
1629
1630	if (priv->tlan_rev < 0x30) {
1631		TLAN_DBG(TLAN_DEBUG_TX,
1632			 "TRANSMIT:  handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1633			 priv->tx_head, priv->tx_tail);
1634		head_list = priv->tx_list + priv->tx_head;
1635		head_list_phys = priv->tx_list_dma
1636			+ sizeof(struct tlan_list)*priv->tx_head;
1637		if ((head_list->c_stat & TLAN_CSTAT_READY)
1638		    == TLAN_CSTAT_READY) {
1639			netif_stop_queue(dev);
1640			outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1641			ack |= TLAN_HC_GO;
1642		} else {
1643			priv->tx_in_progress = 0;
1644		}
1645	}
1646
1647	return ack;
1648
1649}
1650
1651
1652
1653
1654/***************************************************************
1655 *	tlan_handle_status_check
1656 *
1657 *	Returns:
1658 *		0 if Adapter check, 1 if Network Status check.
1659 *	Parms:
1660 *		dev		Device assigned the IRQ that was
1661 *				raised.
1662 *		host_int	The contents of the HOST_INT
1663 *				port.
1664 *
1665 *	This function handles Adapter Check/Network Status
1666 *	interrupts generated by the adapter.  It checks the
1667 *	vector in the HOST_INT register to determine if it is
1668 *	an Adapter Check interrupt.  If so, it resets the
1669 *	adapter.  Otherwise it clears the status registers
1670 *	and services the PHY.
1671 *
1672 **************************************************************/
1673
1674static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1675{
1676	struct tlan_priv	*priv = netdev_priv(dev);
1677	u32		ack;
1678	u32		error;
1679	u8		net_sts;
1680	u32		phy;
1681	u16		tlphy_ctl;
1682	u16		tlphy_sts;
1683
1684	ack = 1;
1685	if (host_int & TLAN_HI_IV_MASK) {
1686		netif_stop_queue(dev);
1687		error = inl(dev->base_addr + TLAN_CH_PARM);
1688		netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1689		tlan_read_and_clear_stats(dev, TLAN_RECORD);
1690		outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1691
1692		schedule_work(&priv->tlan_tqueue);
1693
1694		netif_wake_queue(dev);
1695		ack = 0;
1696	} else {
1697		TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1698		phy = priv->phy[priv->phy_num];
1699
1700		net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1701		if (net_sts) {
1702			tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1703			TLAN_DBG(TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1704				 dev->name, (unsigned) net_sts);
1705		}
1706		if ((net_sts & TLAN_NET_STS_MIRQ) &&  (priv->phy_num == 0)) {
1707			__tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1708			__tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1709			if (!(tlphy_sts & TLAN_TS_POLOK) &&
1710			    !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1711				tlphy_ctl |= TLAN_TC_SWAPOL;
1712				__tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1713						     tlphy_ctl);
1714			} else if ((tlphy_sts & TLAN_TS_POLOK) &&
1715				   (tlphy_ctl & TLAN_TC_SWAPOL)) {
1716				tlphy_ctl &= ~TLAN_TC_SWAPOL;
1717				__tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1718						     tlphy_ctl);
1719			}
1720
1721			if (debug)
1722				__tlan_phy_print(dev);
1723		}
1724	}
1725
1726	return ack;
1727
1728}
1729
1730
1731
1732
1733/***************************************************************
1734 *	tlan_handle_rx_eoc
1735 *
1736 *	Returns:
1737 *		1
1738 *	Parms:
1739 *		dev		Device assigned the IRQ that was
1740 *				raised.
1741 *		host_int	The contents of the HOST_INT
1742 *				port.
1743 *
1744 *	This driver is structured to determine EOC occurrences by
1745 *	reading the CSTAT member of the list structure.  Rx EOC
1746 *	interrupts are disabled via the DIO INTDIS register.
1747 *	However, TLAN chips before revision 3.0 didn't have this
1748 *	CSTAT member or a INTDIS register, so if this chip is
1749 *	pre-3.0, process EOC interrupts normally.
1750 *
1751 **************************************************************/
1752
1753static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1754{
1755	struct tlan_priv	*priv = netdev_priv(dev);
1756	dma_addr_t	head_list_phys;
1757	u32		ack = 1;
1758
1759	if (priv->tlan_rev < 0x30) {
1760		TLAN_DBG(TLAN_DEBUG_RX,
1761			 "RECEIVE:  Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1762			 priv->rx_head, priv->rx_tail);
1763		head_list_phys = priv->rx_list_dma
1764			+ sizeof(struct tlan_list)*priv->rx_head;
1765		outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1766		ack |= TLAN_HC_GO | TLAN_HC_RT;
1767		priv->rx_eoc_count++;
1768	}
1769
1770	return ack;
1771
1772}
1773
1774
1775
1776
1777/*****************************************************************************
1778******************************************************************************
1779
1780ThunderLAN driver timer function
1781
1782******************************************************************************
1783*****************************************************************************/
1784
1785
1786/***************************************************************
1787 *	tlan_timer
1788 *
1789 *	Returns:
1790 *		Nothing
1791 *	Parms:
1792 *		data	A value given to add timer when
1793 *			add_timer was called.
1794 *
1795 *	This function handles timed functionality for the
1796 *	TLAN driver.  The two current timer uses are for
1797 *	delaying for autonegotionation and driving the ACT LED.
1798 *	-	Autonegotiation requires being allowed about
1799 *		2 1/2 seconds before attempting to transmit a
1800 *		packet.  It would be a very bad thing to hang
1801 *		the kernel this long, so the driver doesn't
1802 *		allow transmission 'til after this time, for
1803 *		certain PHYs.  It would be much nicer if all
1804 *		PHYs were interrupt-capable like the internal
1805 *		PHY.
1806 *	-	The ACT LED, which shows adapter activity, is
1807 *		driven by the driver, and so must be left on
1808 *		for a short period to power up the LED so it
1809 *		can be seen.  This delay can be changed by
1810 *		changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1811 *		if desired.  100 ms  produces a slightly
1812 *		sluggish response.
1813 *
1814 **************************************************************/
1815
1816static void tlan_timer(struct timer_list *t)
1817{
1818	struct tlan_priv	*priv = from_timer(priv, t, timer);
1819	struct net_device	*dev = priv->dev;
1820	u32		elapsed;
1821	unsigned long	flags = 0;
1822
1823	priv->timer.function = NULL;
1824
1825	switch (priv->timer_type) {
1826	case TLAN_TIMER_PHY_PDOWN:
1827		tlan_phy_power_down(dev);
1828		break;
1829	case TLAN_TIMER_PHY_PUP:
1830		tlan_phy_power_up(dev);
1831		break;
1832	case TLAN_TIMER_PHY_RESET:
1833		tlan_phy_reset(dev);
1834		break;
1835	case TLAN_TIMER_PHY_START_LINK:
1836		tlan_phy_start_link(dev);
1837		break;
1838	case TLAN_TIMER_PHY_FINISH_AN:
1839		tlan_phy_finish_auto_neg(dev);
1840		break;
1841	case TLAN_TIMER_FINISH_RESET:
1842		tlan_finish_reset(dev);
1843		break;
1844	case TLAN_TIMER_ACTIVITY:
1845		spin_lock_irqsave(&priv->lock, flags);
1846		if (priv->timer.function == NULL) {
1847			elapsed = jiffies - priv->timer_set_at;
1848			if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1849				tlan_dio_write8(dev->base_addr,
1850						TLAN_LED_REG, TLAN_LED_LINK);
1851			} else  {
1852				priv->timer.expires = priv->timer_set_at
1853					+ TLAN_TIMER_ACT_DELAY;
1854				spin_unlock_irqrestore(&priv->lock, flags);
1855				add_timer(&priv->timer);
1856				break;
1857			}
1858		}
1859		spin_unlock_irqrestore(&priv->lock, flags);
1860		break;
1861	default:
1862		break;
1863	}
1864
1865}
1866
1867
1868/*****************************************************************************
1869******************************************************************************
1870
1871ThunderLAN driver adapter related routines
1872
1873******************************************************************************
1874*****************************************************************************/
1875
1876
1877/***************************************************************
1878 *	tlan_reset_lists
1879 *
1880 *	Returns:
1881 *		Nothing
1882 *	Parms:
1883 *		dev	The device structure with the list
1884 *			structures to be reset.
1885 *
1886 *	This routine sets the variables associated with managing
1887 *	the TLAN lists to their initial values.
1888 *
1889 **************************************************************/
1890
1891static void tlan_reset_lists(struct net_device *dev)
1892{
1893	struct tlan_priv *priv = netdev_priv(dev);
1894	int		i;
1895	struct tlan_list	*list;
1896	dma_addr_t	list_phys;
1897	struct sk_buff	*skb;
1898
1899	priv->tx_head = 0;
1900	priv->tx_tail = 0;
1901	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1902		list = priv->tx_list + i;
1903		list->c_stat = TLAN_CSTAT_UNUSED;
1904		list->buffer[0].address = 0;
1905		list->buffer[2].count = 0;
1906		list->buffer[2].address = 0;
1907		list->buffer[8].address = 0;
1908		list->buffer[9].address = 0;
1909	}
1910
1911	priv->rx_head = 0;
1912	priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1913	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1914		list = priv->rx_list + i;
1915		list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1916		list->c_stat = TLAN_CSTAT_READY;
1917		list->frame_size = TLAN_MAX_FRAME_SIZE;
1918		list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1919		skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1920		if (!skb)
1921			break;
1922
1923		list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1924							 skb->data,
1925							 TLAN_MAX_FRAME_SIZE,
1926							 DMA_FROM_DEVICE);
1927		tlan_store_skb(list, skb);
1928		list->buffer[1].count = 0;
1929		list->buffer[1].address = 0;
1930		list->forward = list_phys + sizeof(struct tlan_list);
1931	}
1932
1933	/* in case ran out of memory early, clear bits */
1934	while (i < TLAN_NUM_RX_LISTS) {
1935		tlan_store_skb(priv->rx_list + i, NULL);
1936		++i;
1937	}
1938	list->forward = 0;
1939
1940}
1941
1942
1943static void tlan_free_lists(struct net_device *dev)
1944{
1945	struct tlan_priv *priv = netdev_priv(dev);
1946	int		i;
1947	struct tlan_list	*list;
1948	struct sk_buff	*skb;
1949
1950	for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1951		list = priv->tx_list + i;
1952		skb = tlan_get_skb(list);
1953		if (skb) {
1954			dma_unmap_single(&priv->pci_dev->dev,
1955					 list->buffer[0].address,
1956					 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1957					 DMA_TO_DEVICE);
 
 
1958			dev_kfree_skb_any(skb);
1959			list->buffer[8].address = 0;
1960			list->buffer[9].address = 0;
1961		}
1962	}
1963
1964	for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1965		list = priv->rx_list + i;
1966		skb = tlan_get_skb(list);
1967		if (skb) {
1968			dma_unmap_single(&priv->pci_dev->dev,
1969					 list->buffer[0].address,
1970					 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
 
1971			dev_kfree_skb_any(skb);
1972			list->buffer[8].address = 0;
1973			list->buffer[9].address = 0;
1974		}
1975	}
1976}
1977
1978
1979
1980
1981/***************************************************************
1982 *	tlan_print_dio
1983 *
1984 *	Returns:
1985 *		Nothing
1986 *	Parms:
1987 *		io_base		Base IO port of the device of
1988 *				which to print DIO registers.
1989 *
1990 *	This function prints out all the internal (DIO)
1991 *	registers of a TLAN chip.
1992 *
1993 **************************************************************/
1994
1995static void tlan_print_dio(u16 io_base)
1996{
1997	u32 data0, data1;
1998	int	i;
1999
2000	pr_info("Contents of internal registers for io base 0x%04hx\n",
2001		io_base);
2002	pr_info("Off.  +0        +4\n");
2003	for (i = 0; i < 0x4C; i += 8) {
2004		data0 = tlan_dio_read32(io_base, i);
2005		data1 = tlan_dio_read32(io_base, i + 0x4);
2006		pr_info("0x%02x  0x%08x 0x%08x\n", i, data0, data1);
2007	}
2008
2009}
2010
2011
2012
2013
2014/***************************************************************
2015 *	TLan_PrintList
2016 *
2017 *	Returns:
2018 *		Nothing
2019 *	Parms:
2020 *		list	A pointer to the struct tlan_list structure to
2021 *			be printed.
2022 *		type	A string to designate type of list,
2023 *			"Rx" or "Tx".
2024 *		num	The index of the list.
2025 *
2026 *	This function prints out the contents of the list
2027 *	pointed to by the list parameter.
2028 *
2029 **************************************************************/
2030
2031static void tlan_print_list(struct tlan_list *list, char *type, int num)
2032{
2033	int i;
2034
2035	pr_info("%s List %d at %p\n", type, num, list);
2036	pr_info("   Forward    = 0x%08x\n",  list->forward);
2037	pr_info("   CSTAT      = 0x%04hx\n", list->c_stat);
2038	pr_info("   Frame Size = 0x%04hx\n", list->frame_size);
2039	/* for (i = 0; i < 10; i++) { */
2040	for (i = 0; i < 2; i++) {
2041		pr_info("   Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2042			i, list->buffer[i].count, list->buffer[i].address);
2043	}
2044
2045}
2046
2047
2048
2049
2050/***************************************************************
2051 *	tlan_read_and_clear_stats
2052 *
2053 *	Returns:
2054 *		Nothing
2055 *	Parms:
2056 *		dev	Pointer to device structure of adapter
2057 *			to which to read stats.
2058 *		record	Flag indicating whether to add
2059 *
2060 *	This functions reads all the internal status registers
2061 *	of the TLAN chip, which clears them as a side effect.
2062 *	It then either adds the values to the device's status
2063 *	struct, or discards them, depending on whether record
2064 *	is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2065 *
2066 **************************************************************/
2067
2068static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2069{
2070	u32		tx_good, tx_under;
2071	u32		rx_good, rx_over;
2072	u32		def_tx, crc, code;
2073	u32		multi_col, single_col;
2074	u32		excess_col, late_col, loss;
2075
2076	outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2077	tx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2078	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2079	tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2080	tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2081
2082	outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2083	rx_good  = inb(dev->base_addr + TLAN_DIO_DATA);
2084	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2085	rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2086	rx_over  = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2087
2088	outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2089	def_tx  = inb(dev->base_addr + TLAN_DIO_DATA);
2090	def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2091	crc     = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2092	code    = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2093
2094	outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2095	multi_col   = inb(dev->base_addr + TLAN_DIO_DATA);
2096	multi_col  += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2097	single_col  = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2098	single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2099
2100	outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2101	excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2102	late_col   = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2103	loss       = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2104
2105	if (record) {
2106		dev->stats.rx_packets += rx_good;
2107		dev->stats.rx_errors  += rx_over + crc + code;
2108		dev->stats.tx_packets += tx_good;
2109		dev->stats.tx_errors  += tx_under + loss;
2110		dev->stats.collisions += multi_col
2111			+ single_col + excess_col + late_col;
2112
2113		dev->stats.rx_over_errors    += rx_over;
2114		dev->stats.rx_crc_errors     += crc;
2115		dev->stats.rx_frame_errors   += code;
2116
2117		dev->stats.tx_aborted_errors += tx_under;
2118		dev->stats.tx_carrier_errors += loss;
2119	}
2120
2121}
2122
2123
2124
2125
2126/***************************************************************
2127 *	TLan_Reset
2128 *
2129 *	Returns:
2130 *		0
2131 *	Parms:
2132 *		dev	Pointer to device structure of adapter
2133 *			to be reset.
2134 *
2135 *	This function resets the adapter and it's physical
2136 *	device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2137 *	Programmer's Guide" for details.  The routine tries to
2138 *	implement what is detailed there, though adjustments
2139 *	have been made.
2140 *
2141 **************************************************************/
2142
2143static void
2144tlan_reset_adapter(struct net_device *dev)
2145{
2146	struct tlan_priv	*priv = netdev_priv(dev);
2147	int		i;
2148	u32		addr;
2149	u32		data;
2150	u8		data8;
2151
2152	priv->tlan_full_duplex = false;
2153	priv->phy_online = 0;
2154	netif_carrier_off(dev);
2155
2156/*  1.	Assert reset bit. */
2157
2158	data = inl(dev->base_addr + TLAN_HOST_CMD);
2159	data |= TLAN_HC_AD_RST;
2160	outl(data, dev->base_addr + TLAN_HOST_CMD);
2161
2162	udelay(1000);
2163
2164/*  2.	Turn off interrupts. (Probably isn't necessary) */
2165
2166	data = inl(dev->base_addr + TLAN_HOST_CMD);
2167	data |= TLAN_HC_INT_OFF;
2168	outl(data, dev->base_addr + TLAN_HOST_CMD);
2169
2170/*  3.	Clear AREGs and HASHs. */
2171
2172	for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2173		tlan_dio_write32(dev->base_addr, (u16) i, 0);
2174
2175/*  4.	Setup NetConfig register. */
2176
2177	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2178	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2179
2180/*  5.	Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2181
2182	outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2183	outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2184
2185/*  6.	Unreset the MII by setting NMRST (in NetSio) to 1. */
2186
2187	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2188	addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2189	tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2190
2191/*  7.	Setup the remaining registers. */
2192
2193	if (priv->tlan_rev >= 0x30) {
2194		data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2195		tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2196	}
2197	tlan_phy_detect(dev);
2198	data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2199
2200	if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2201		data |= TLAN_NET_CFG_BIT;
2202		if (priv->aui == 1) {
2203			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2204		} else if (priv->duplex == TLAN_DUPLEX_FULL) {
2205			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2206			priv->tlan_full_duplex = true;
2207		} else {
2208			tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2209		}
2210	}
2211
2212	/* don't power down internal PHY if we're going to use it */
2213	if (priv->phy_num == 0 ||
2214	   (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2215		data |= TLAN_NET_CFG_PHY_EN;
2216	tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2217
2218	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2219		tlan_finish_reset(dev);
2220	else
2221		tlan_phy_power_down(dev);
2222
2223}
2224
2225
2226
2227
2228static void
2229tlan_finish_reset(struct net_device *dev)
2230{
2231	struct tlan_priv	*priv = netdev_priv(dev);
2232	u8		data;
2233	u32		phy;
2234	u8		sio;
2235	u16		status;
2236	u16		partner;
2237	u16		tlphy_ctl;
2238	u16		tlphy_par;
2239	u16		tlphy_id1, tlphy_id2;
2240	int		i;
2241
2242	phy = priv->phy[priv->phy_num];
2243
2244	data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2245	if (priv->tlan_full_duplex)
2246		data |= TLAN_NET_CMD_DUPLEX;
2247	tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2248	data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2249	if (priv->phy_num == 0)
2250		data |= TLAN_NET_MASK_MASK7;
2251	tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2252	tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2253	tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2254	tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2255
2256	if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2257	    (priv->aui)) {
2258		status = MII_GS_LINK;
2259		netdev_info(dev, "Link forced\n");
2260	} else {
2261		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262		udelay(1000);
2263		tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2264		if (status & MII_GS_LINK) {
2265			/* We only support link info on Nat.Sem. PHY's */
2266			if ((tlphy_id1 == NAT_SEM_ID1) &&
2267			    (tlphy_id2 == NAT_SEM_ID2)) {
2268				tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2269					&partner);
2270				tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2271					&tlphy_par);
2272
2273				netdev_info(dev,
2274					"Link active, %s %uMbps %s-Duplex\n",
2275					!(tlphy_par & TLAN_PHY_AN_EN_STAT)
2276					? "forced" : "Autonegotiation enabled,",
2277					tlphy_par & TLAN_PHY_SPEED_100
2278					? 100 : 10,
2279					tlphy_par & TLAN_PHY_DUPLEX_FULL
2280					? "Full" : "Half");
2281
2282				if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2283					netdev_info(dev, "Partner capability:");
2284					for (i = 5; i < 10; i++)
2285						if (partner & (1 << i))
2286							pr_cont(" %s",
2287								media[i-5]);
2288					pr_cont("\n");
2289				}
2290			} else
2291				netdev_info(dev, "Link active\n");
2292			/* Enabling link beat monitoring */
2293			priv->media_timer.expires = jiffies + HZ;
2294			add_timer(&priv->media_timer);
2295		}
2296	}
2297
2298	if (priv->phy_num == 0) {
2299		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2300		tlphy_ctl |= TLAN_TC_INTEN;
2301		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2302		sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2303		sio |= TLAN_NET_SIO_MINTEN;
2304		tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2305	}
2306
2307	if (status & MII_GS_LINK) {
2308		tlan_set_mac(dev, 0, dev->dev_addr);
2309		priv->phy_online = 1;
2310		outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2311		if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2312			outb((TLAN_HC_REQ_INT >> 8),
2313			     dev->base_addr + TLAN_HOST_CMD + 1);
2314		outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2315		outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2316		tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2317		netif_carrier_on(dev);
2318	} else {
2319		netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2320		tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2321		return;
2322	}
2323	tlan_set_multicast_list(dev);
2324
2325}
2326
2327
2328
2329
2330/***************************************************************
2331 *	tlan_set_mac
2332 *
2333 *	Returns:
2334 *		Nothing
2335 *	Parms:
2336 *		dev	Pointer to device structure of adapter
2337 *			on which to change the AREG.
2338 *		areg	The AREG to set the address in (0 - 3).
2339 *		mac	A pointer to an array of chars.  Each
2340 *			element stores one byte of the address.
2341 *			IE, it isn't in ascii.
2342 *
2343 *	This function transfers a MAC address to one of the
2344 *	TLAN AREGs (address registers).  The TLAN chip locks
2345 *	the register on writing to offset 0 and unlocks the
2346 *	register after writing to offset 5.  If NULL is passed
2347 *	in mac, then the AREG is filled with 0's.
2348 *
2349 **************************************************************/
2350
2351static void tlan_set_mac(struct net_device *dev, int areg, const char *mac)
2352{
2353	int i;
2354
2355	areg *= 6;
2356
2357	if (mac != NULL) {
2358		for (i = 0; i < 6; i++)
2359			tlan_dio_write8(dev->base_addr,
2360					TLAN_AREG_0 + areg + i, mac[i]);
2361	} else {
2362		for (i = 0; i < 6; i++)
2363			tlan_dio_write8(dev->base_addr,
2364					TLAN_AREG_0 + areg + i, 0);
2365	}
2366
2367}
2368
2369
2370
2371
2372/*****************************************************************************
2373******************************************************************************
2374
2375ThunderLAN driver PHY layer routines
2376
2377******************************************************************************
2378*****************************************************************************/
2379
2380
2381
2382/*********************************************************************
2383 *	__tlan_phy_print
2384 *
2385 *	Returns:
2386 *		Nothing
2387 *	Parms:
2388 *		dev	A pointer to the device structure of the
2389 *			TLAN device having the PHYs to be detailed.
2390 *
2391 *	This function prints the registers a PHY (aka transceiver).
2392 *
2393 ********************************************************************/
2394
2395static void __tlan_phy_print(struct net_device *dev)
2396{
2397	struct tlan_priv *priv = netdev_priv(dev);
2398	u16 i, data0, data1, data2, data3, phy;
2399
2400	lockdep_assert_held(&priv->lock);
2401
2402	phy = priv->phy[priv->phy_num];
2403
2404	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2405		netdev_info(dev, "Unmanaged PHY\n");
2406	} else if (phy <= TLAN_PHY_MAX_ADDR) {
2407		netdev_info(dev, "PHY 0x%02x\n", phy);
2408		pr_info("   Off.  +0     +1     +2     +3\n");
2409		for (i = 0; i < 0x20; i += 4) {
2410			__tlan_mii_read_reg(dev, phy, i, &data0);
2411			__tlan_mii_read_reg(dev, phy, i + 1, &data1);
2412			__tlan_mii_read_reg(dev, phy, i + 2, &data2);
2413			__tlan_mii_read_reg(dev, phy, i + 3, &data3);
2414			pr_info("   0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2415				i, data0, data1, data2, data3);
2416		}
2417	} else {
2418		netdev_info(dev, "Invalid PHY\n");
2419	}
2420
2421}
2422
2423static void tlan_phy_print(struct net_device *dev)
2424{
2425	struct tlan_priv *priv = netdev_priv(dev);
2426	unsigned long flags;
2427
2428	spin_lock_irqsave(&priv->lock, flags);
2429	__tlan_phy_print(dev);
2430	spin_unlock_irqrestore(&priv->lock, flags);
2431}
2432
2433
2434/*********************************************************************
2435 *	tlan_phy_detect
2436 *
2437 *	Returns:
2438 *		Nothing
2439 *	Parms:
2440 *		dev	A pointer to the device structure of the adapter
2441 *			for which the PHY needs determined.
2442 *
2443 *	So far I've found that adapters which have external PHYs
2444 *	may also use the internal PHY for part of the functionality.
2445 *	(eg, AUI/Thinnet).  This function finds out if this TLAN
2446 *	chip has an internal PHY, and then finds the first external
2447 *	PHY (starting from address 0) if it exists).
2448 *
2449 ********************************************************************/
2450
2451static void tlan_phy_detect(struct net_device *dev)
2452{
2453	struct tlan_priv *priv = netdev_priv(dev);
2454	u16		control;
2455	u16		hi;
2456	u16		lo;
2457	u32		phy;
2458
2459	if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2460		priv->phy_num = 0xffff;
2461		return;
2462	}
2463
2464	tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2465
2466	if (hi != 0xffff)
2467		priv->phy[0] = TLAN_PHY_MAX_ADDR;
2468	else
2469		priv->phy[0] = TLAN_PHY_NONE;
2470
2471	priv->phy[1] = TLAN_PHY_NONE;
2472	for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2473		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2474		tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2475		tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2476		if ((control != 0xffff) ||
2477		    (hi != 0xffff) || (lo != 0xffff)) {
2478			TLAN_DBG(TLAN_DEBUG_GNRL,
2479				 "PHY found at %02x %04x %04x %04x\n",
2480				 phy, control, hi, lo);
2481			if ((priv->phy[1] == TLAN_PHY_NONE) &&
2482			    (phy != TLAN_PHY_MAX_ADDR)) {
2483				priv->phy[1] = phy;
2484			}
2485		}
2486	}
2487
2488	if (priv->phy[1] != TLAN_PHY_NONE)
2489		priv->phy_num = 1;
2490	else if (priv->phy[0] != TLAN_PHY_NONE)
2491		priv->phy_num = 0;
2492	else
2493		netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2494
2495}
2496
2497
2498
2499
2500static void tlan_phy_power_down(struct net_device *dev)
2501{
2502	struct tlan_priv	*priv = netdev_priv(dev);
2503	u16		value;
2504
2505	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2506	value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2507	tlan_mii_sync(dev->base_addr);
2508	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2509	if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2510		/* if using internal PHY, the external PHY must be powered on */
2511		if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2512			value = MII_GC_ISOLATE; /* just isolate it from MII */
2513		tlan_mii_sync(dev->base_addr);
2514		tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2515	}
2516
2517	/* Wait for 50 ms and powerup
2518	 * This is arbitrary.  It is intended to make sure the
2519	 * transceiver settles.
2520	 */
2521	tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2522
2523}
2524
2525
2526
2527
2528static void tlan_phy_power_up(struct net_device *dev)
2529{
2530	struct tlan_priv	*priv = netdev_priv(dev);
2531	u16		value;
2532
2533	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2534	tlan_mii_sync(dev->base_addr);
2535	value = MII_GC_LOOPBK;
2536	tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2537	tlan_mii_sync(dev->base_addr);
2538	/* Wait for 500 ms and reset the
2539	 * transceiver.  The TLAN docs say both 50 ms and
2540	 * 500 ms, so do the longer, just in case.
2541	 */
2542	tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2543
2544}
2545
2546
2547
2548
2549static void tlan_phy_reset(struct net_device *dev)
2550{
2551	struct tlan_priv	*priv = netdev_priv(dev);
2552	u16		phy;
2553	u16		value;
2554	unsigned long timeout = jiffies + HZ;
2555
2556	phy = priv->phy[priv->phy_num];
2557
2558	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2559	tlan_mii_sync(dev->base_addr);
2560	value = MII_GC_LOOPBK | MII_GC_RESET;
2561	tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2562	do {
2563		tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2564		if (time_after(jiffies, timeout)) {
2565			netdev_err(dev, "PHY reset timeout\n");
2566			return;
2567		}
2568	} while (value & MII_GC_RESET);
2569
2570	/* Wait for 500 ms and initialize.
2571	 * I don't remember why I wait this long.
2572	 * I've changed this to 50ms, as it seems long enough.
2573	 */
2574	tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2575
2576}
2577
2578
2579
2580
2581static void tlan_phy_start_link(struct net_device *dev)
2582{
2583	struct tlan_priv	*priv = netdev_priv(dev);
2584	u16		ability;
2585	u16		control;
2586	u16		data;
2587	u16		phy;
2588	u16		status;
2589	u16		tctl;
2590
2591	phy = priv->phy[priv->phy_num];
2592	TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2593	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2594	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2595
2596	if ((status & MII_GS_AUTONEG) &&
2597	    (!priv->aui)) {
2598		ability = status >> 11;
2599		if (priv->speed  == TLAN_SPEED_10 &&
2600		    priv->duplex == TLAN_DUPLEX_HALF) {
2601			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2602		} else if (priv->speed == TLAN_SPEED_10 &&
2603			   priv->duplex == TLAN_DUPLEX_FULL) {
2604			priv->tlan_full_duplex = true;
2605			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2606		} else if (priv->speed == TLAN_SPEED_100 &&
2607			   priv->duplex == TLAN_DUPLEX_HALF) {
2608			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2609		} else if (priv->speed == TLAN_SPEED_100 &&
2610			   priv->duplex == TLAN_DUPLEX_FULL) {
2611			priv->tlan_full_duplex = true;
2612			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2613		} else {
2614
2615			/* Set Auto-Neg advertisement */
2616			tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2617					   (ability << 5) | 1);
2618			/* Enablee Auto-Neg */
2619			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2620			/* Restart Auto-Neg */
2621			tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2622			/* Wait for 4 sec for autonegotiation
2623			 * to complete.  The max spec time is less than this
2624			 * but the card need additional time to start AN.
2625			 * .5 sec should be plenty extra.
2626			 */
2627			netdev_info(dev, "Starting autonegotiation\n");
2628			tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2629			return;
2630		}
2631
2632	}
2633
2634	if ((priv->aui) && (priv->phy_num != 0)) {
2635		priv->phy_num = 0;
2636		data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2637			| TLAN_NET_CFG_PHY_EN;
2638		tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2639		tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2640		return;
2641	} else if (priv->phy_num == 0) {
2642		control = 0;
2643		tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2644		if (priv->aui) {
2645			tctl |= TLAN_TC_AUISEL;
2646		} else {
2647			tctl &= ~TLAN_TC_AUISEL;
2648			if (priv->duplex == TLAN_DUPLEX_FULL) {
2649				control |= MII_GC_DUPLEX;
2650				priv->tlan_full_duplex = true;
2651			}
2652			if (priv->speed == TLAN_SPEED_100)
2653				control |= MII_GC_SPEEDSEL;
2654		}
2655		tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2656		tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2657	}
2658
2659	/* Wait for 2 sec to give the transceiver time
2660	 * to establish link.
2661	 */
2662	tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2663
2664}
2665
2666
2667
2668
2669static void tlan_phy_finish_auto_neg(struct net_device *dev)
2670{
2671	struct tlan_priv	*priv = netdev_priv(dev);
2672	u16		an_adv;
2673	u16		an_lpa;
2674	u16		mode;
2675	u16		phy;
2676	u16		status;
2677
2678	phy = priv->phy[priv->phy_num];
2679
2680	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2681	udelay(1000);
2682	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2683
2684	if (!(status & MII_GS_AUTOCMPLT)) {
2685		/* Wait for 8 sec to give the process
2686		 * more time.  Perhaps we should fail after a while.
2687		 */
2688		tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2689		return;
2690	}
2691
2692	netdev_info(dev, "Autonegotiation complete\n");
2693	tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2694	tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2695	mode = an_adv & an_lpa & 0x03E0;
2696	if (mode & 0x0100)
2697		priv->tlan_full_duplex = true;
2698	else if (!(mode & 0x0080) && (mode & 0x0040))
2699		priv->tlan_full_duplex = true;
2700
2701	/* switch to internal PHY for 10 Mbps */
2702	if ((!(mode & 0x0180)) &&
2703	    (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2704	    (priv->phy_num != 0)) {
2705		priv->phy_num = 0;
2706		tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2707		return;
2708	}
2709
2710	if (priv->phy_num == 0) {
2711		if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2712		    (an_adv & an_lpa & 0x0040)) {
2713			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2714					   MII_GC_AUTOENB | MII_GC_DUPLEX);
2715			netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2716		} else {
2717			tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2718					   MII_GC_AUTOENB);
2719			netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2720		}
2721	}
2722
2723	/* Wait for 100 ms.  No reason in partiticular.
2724	 */
2725	tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2726
2727}
2728
2729
2730/*********************************************************************
2731 *
2732 *     tlan_phy_monitor
2733 *
2734 *     Returns:
2735 *	      None
2736 *
2737 *     Params:
2738 *	      data	     The device structure of this device.
2739 *
2740 *
2741 *     This function monitors PHY condition by reading the status
2742 *     register via the MII bus, controls LINK LED and notifies the
2743 *     kernel about link state.
2744 *
2745 *******************************************************************/
2746
2747static void tlan_phy_monitor(struct timer_list *t)
2748{
2749	struct tlan_priv *priv = from_timer(priv, t, media_timer);
2750	struct net_device *dev = priv->dev;
2751	u16     phy;
2752	u16     phy_status;
2753
2754	phy = priv->phy[priv->phy_num];
2755
2756	/* Get PHY status register */
2757	tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2758
2759	/* Check if link has been lost */
2760	if (!(phy_status & MII_GS_LINK)) {
2761		if (netif_carrier_ok(dev)) {
2762			printk(KERN_DEBUG "TLAN: %s has lost link\n",
2763			       dev->name);
2764			tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2765			netif_carrier_off(dev);
2766			if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2767				/* power down internal PHY */
2768				u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2769					   MII_GC_ISOLATE;
2770
2771				tlan_mii_sync(dev->base_addr);
2772				tlan_mii_write_reg(dev, priv->phy[0],
2773						   MII_GEN_CTL, data);
2774				/* set to external PHY */
2775				priv->phy_num = 1;
2776				/* restart autonegotiation */
2777				tlan_set_timer(dev, msecs_to_jiffies(400),
2778					       TLAN_TIMER_PHY_PDOWN);
2779				return;
2780			}
2781		}
2782	}
2783
2784	/* Link restablished? */
2785	if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2786		tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2787		printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2788		       dev->name);
2789		netif_carrier_on(dev);
2790	}
2791	priv->media_timer.expires = jiffies + HZ;
2792	add_timer(&priv->media_timer);
2793}
2794
2795
2796/*****************************************************************************
2797******************************************************************************
2798
2799ThunderLAN driver MII routines
2800
2801these routines are based on the information in chap. 2 of the
2802"ThunderLAN Programmer's Guide", pp. 15-24.
2803
2804******************************************************************************
2805*****************************************************************************/
2806
2807
2808/***************************************************************
2809 *	__tlan_mii_read_reg
2810 *
2811 *	Returns:
2812 *		false	if ack received ok
2813 *		true	if no ack received or other error
2814 *
2815 *	Parms:
2816 *		dev		The device structure containing
2817 *				The io address and interrupt count
2818 *				for this device.
2819 *		phy		The address of the PHY to be queried.
2820 *		reg		The register whose contents are to be
2821 *				retrieved.
2822 *		val		A pointer to a variable to store the
2823 *				retrieved value.
2824 *
2825 *	This function uses the TLAN's MII bus to retrieve the contents
2826 *	of a given register on a PHY.  It sends the appropriate info
2827 *	and then reads the 16-bit register value from the MII bus via
2828 *	the TLAN SIO register.
2829 *
2830 **************************************************************/
2831
2832static bool
2833__tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2834{
2835	u8	nack;
2836	u16	sio, tmp;
2837	u32	i;
2838	bool	err;
2839	int	minten;
2840	struct tlan_priv *priv = netdev_priv(dev);
2841
2842	lockdep_assert_held(&priv->lock);
2843
2844	err = false;
2845	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2846	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2847
 
 
 
2848	tlan_mii_sync(dev->base_addr);
2849
2850	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2851	if (minten)
2852		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2853
2854	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
2855	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* read  (10b) */
2856	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
2857	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
2858
2859
2860	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);	/* change direction */
2861
2862	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* clock idle bit */
2863	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2864	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* wait 300ns */
2865
2866	nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio);	/* check for ACK */
2867	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);		/* finish ACK */
2868	if (nack) {					/* no ACK, so fake it */
2869		for (i = 0; i < 16; i++) {
2870			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2871			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2872		}
2873		tmp = 0xffff;
2874		err = true;
2875	} else {					/* ACK, so read data */
2876		for (tmp = 0, i = 0x8000; i; i >>= 1) {
2877			tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2878			if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2879				tmp |= i;
2880			tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2881		}
2882	}
2883
2884
2885	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);		/* idle cycle */
2886	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887
2888	if (minten)
2889		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2890
2891	*val = tmp;
2892
 
 
 
2893	return err;
 
2894}
2895
2896static void tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg,
2897			      u16 *val)
2898{
2899	struct tlan_priv *priv = netdev_priv(dev);
2900	unsigned long flags;
2901
2902	spin_lock_irqsave(&priv->lock, flags);
2903	__tlan_mii_read_reg(dev, phy, reg, val);
2904	spin_unlock_irqrestore(&priv->lock, flags);
2905}
2906
2907/***************************************************************
2908 *	tlan_mii_send_data
2909 *
2910 *	Returns:
2911 *		Nothing
2912 *	Parms:
2913 *		base_port	The base IO port of the adapter	in
2914 *				question.
2915 *		dev		The address of the PHY to be queried.
2916 *		data		The value to be placed on the MII bus.
2917 *		num_bits	The number of bits in data that are to
2918 *				be placed on the MII bus.
2919 *
2920 *	This function sends on sequence of bits on the MII
2921 *	configuration bus.
2922 *
2923 **************************************************************/
2924
2925static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2926{
2927	u16 sio;
2928	u32 i;
2929
2930	if (num_bits == 0)
2931		return;
2932
2933	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2934	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2935	tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2936
2937	for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2938		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2939		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2940		if (data & i)
2941			tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2942		else
2943			tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2944		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2945		(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2946	}
2947
2948}
2949
2950
2951
2952
2953/***************************************************************
2954 *	TLan_MiiSync
2955 *
2956 *	Returns:
2957 *		Nothing
2958 *	Parms:
2959 *		base_port	The base IO port of the adapter in
2960 *				question.
2961 *
2962 *	This functions syncs all PHYs in terms of the MII configuration
2963 *	bus.
2964 *
2965 **************************************************************/
2966
2967static void tlan_mii_sync(u16 base_port)
2968{
2969	int i;
2970	u16 sio;
2971
2972	outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2973	sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2974
2975	tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2976	for (i = 0; i < 32; i++) {
2977		tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2978		tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2979	}
2980
2981}
2982
2983
2984
2985
2986/***************************************************************
2987 *	__tlan_mii_write_reg
2988 *
2989 *	Returns:
2990 *		Nothing
2991 *	Parms:
2992 *		dev		The device structure for the device
2993 *				to write to.
2994 *		phy		The address of the PHY to be written to.
2995 *		reg		The register whose contents are to be
2996 *				written.
2997 *		val		The value to be written to the register.
2998 *
2999 *	This function uses the TLAN's MII bus to write the contents of a
3000 *	given register on a PHY.  It sends the appropriate info and then
3001 *	writes the 16-bit register value from the MII configuration bus
3002 *	via the TLAN SIO register.
3003 *
3004 **************************************************************/
3005
3006static void
3007__tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3008{
3009	u16	sio;
3010	int	minten;
 
3011	struct tlan_priv *priv = netdev_priv(dev);
3012
3013	lockdep_assert_held(&priv->lock);
3014
3015	outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3016	sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3017
 
 
 
3018	tlan_mii_sync(dev->base_addr);
3019
3020	minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3021	if (minten)
3022		tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3023
3024	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* start (01b) */
3025	tlan_mii_send_data(dev->base_addr, 0x1, 2);	/* write (01b) */
3026	tlan_mii_send_data(dev->base_addr, phy, 5);	/* device #      */
3027	tlan_mii_send_data(dev->base_addr, reg, 5);	/* register #    */
3028
3029	tlan_mii_send_data(dev->base_addr, 0x2, 2);	/* send ACK */
3030	tlan_mii_send_data(dev->base_addr, val, 16);	/* send data */
3031
3032	tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);	/* idle cycle */
3033	tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3034
3035	if (minten)
3036		tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3037
 
 
 
3038}
3039
3040static void
3041tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3042{
3043	struct tlan_priv *priv = netdev_priv(dev);
3044	unsigned long flags;
3045
3046	spin_lock_irqsave(&priv->lock, flags);
3047	__tlan_mii_write_reg(dev, phy, reg, val);
3048	spin_unlock_irqrestore(&priv->lock, flags);
3049}
3050
3051
3052/*****************************************************************************
3053******************************************************************************
3054
3055ThunderLAN driver eeprom routines
3056
3057the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3058EEPROM.  these functions are based on information in microchip's
3059data sheet.  I don't know how well this functions will work with
3060other Eeproms.
3061
3062******************************************************************************
3063*****************************************************************************/
3064
3065
3066/***************************************************************
3067 *	tlan_ee_send_start
3068 *
3069 *	Returns:
3070 *		Nothing
3071 *	Parms:
3072 *		io_base		The IO port base address for the
3073 *				TLAN device with the EEPROM to
3074 *				use.
3075 *
3076 *	This function sends a start cycle to an EEPROM attached
3077 *	to a TLAN chip.
3078 *
3079 **************************************************************/
3080
3081static void tlan_ee_send_start(u16 io_base)
3082{
3083	u16	sio;
3084
3085	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3086	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3087
3088	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3089	tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3090	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3091	tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3092	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3093
3094}
3095
3096
3097
3098
3099/***************************************************************
3100 *	tlan_ee_send_byte
3101 *
3102 *	Returns:
3103 *		If the correct ack was received, 0, otherwise 1
3104 *	Parms:	io_base		The IO port base address for the
3105 *				TLAN device with the EEPROM to
3106 *				use.
3107 *		data		The 8 bits of information to
3108 *				send to the EEPROM.
3109 *		stop		If TLAN_EEPROM_STOP is passed, a
3110 *				stop cycle is sent after the
3111 *				byte is sent after the ack is
3112 *				read.
3113 *
3114 *	This function sends a byte on the serial EEPROM line,
3115 *	driving the clock to send each bit. The function then
3116 *	reverses transmission direction and reads an acknowledge
3117 *	bit.
3118 *
3119 **************************************************************/
3120
3121static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3122{
3123	int	err;
3124	u8	place;
3125	u16	sio;
3126
3127	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3128	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3129
3130	/* Assume clock is low, tx is enabled; */
3131	for (place = 0x80; place != 0; place >>= 1) {
3132		if (place & data)
3133			tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3134		else
3135			tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3136		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3137		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3138	}
3139	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3140	tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3141	err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3142	tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3143	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3144
3145	if ((!err) && stop) {
3146		/* STOP, raise data while clock is high */
3147		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3148		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3149		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3150	}
3151
3152	return err;
3153
3154}
3155
3156
3157
3158
3159/***************************************************************
3160 *	tlan_ee_receive_byte
3161 *
3162 *	Returns:
3163 *		Nothing
3164 *	Parms:
3165 *		io_base		The IO port base address for the
3166 *				TLAN device with the EEPROM to
3167 *				use.
3168 *		data		An address to a char to hold the
3169 *				data sent from the EEPROM.
3170 *		stop		If TLAN_EEPROM_STOP is passed, a
3171 *				stop cycle is sent after the
3172 *				byte is received, and no ack is
3173 *				sent.
3174 *
3175 *	This function receives 8 bits of data from the EEPROM
3176 *	over the serial link.  It then sends and ack bit, or no
3177 *	ack and a stop bit.  This function is used to retrieve
3178 *	data after the address of a byte in the EEPROM has been
3179 *	sent.
3180 *
3181 **************************************************************/
3182
3183static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3184{
3185	u8  place;
3186	u16 sio;
3187
3188	outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3189	sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3190	*data = 0;
3191
3192	/* Assume clock is low, tx is enabled; */
3193	tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3194	for (place = 0x80; place; place >>= 1) {
3195		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3196		if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3197			*data |= place;
3198		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3199	}
3200
3201	tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3202	if (!stop) {
3203		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3204		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3205		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3206	} else {
3207		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);	/* no ack = 1 (?) */
3208		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3209		tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3210		/* STOP, raise data while clock is high */
3211		tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3212		tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3213		tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3214	}
3215
3216}
3217
3218
3219
3220
3221/***************************************************************
3222 *	tlan_ee_read_byte
3223 *
3224 *	Returns:
3225 *		No error = 0, else, the stage at which the error
3226 *		occurred.
3227 *	Parms:
3228 *		io_base		The IO port base address for the
3229 *				TLAN device with the EEPROM to
3230 *				use.
3231 *		ee_addr		The address of the byte in the
3232 *				EEPROM whose contents are to be
3233 *				retrieved.
3234 *		data		An address to a char to hold the
3235 *				data obtained from the EEPROM.
3236 *
3237 *	This function reads a byte of information from an byte
3238 *	cell in the EEPROM.
3239 *
3240 **************************************************************/
3241
3242static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3243{
3244	int err;
3245	struct tlan_priv *priv = netdev_priv(dev);
3246	unsigned long flags = 0;
3247	int ret = 0;
3248
3249	spin_lock_irqsave(&priv->lock, flags);
3250
3251	tlan_ee_send_start(dev->base_addr);
3252	err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3253	if (err) {
3254		ret = 1;
3255		goto fail;
3256	}
3257	err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3258	if (err) {
3259		ret = 2;
3260		goto fail;
3261	}
3262	tlan_ee_send_start(dev->base_addr);
3263	err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3264	if (err) {
3265		ret = 3;
3266		goto fail;
3267	}
3268	tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3269fail:
3270	spin_unlock_irqrestore(&priv->lock, flags);
3271
3272	return ret;
3273
3274}
3275
3276
3277