drivers/net/tlan.c

   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  ** This file is best viewed/edited with columns>=132.
  17  *
  18  ** Useful (if not required) reading:
  19  *
  20  *              Texas Instruments, ThunderLAN Programmer's Guide,
  21  *                      TI Literature Number SPWU013A
  22  *                      available in PDF format from www.ti.com
  23  *              Level One, LXT901 and LXT970 Data Sheets
  24  *                      available in PDF format from www.level1.com
  25  *              National Semiconductor, DP83840A Data Sheet
  26  *                      available in PDF format from www.national.com
  27  *              Microchip Technology, 24C01A/02A/04A Data Sheet
  28  *                      available in PDF format from www.microchip.com
  29  *
  30  * Change History
  31  *
  32  *      Tigran Aivazian <tigran@sco.com>:       TLan_PciProbe() now uses
  33  *                                              new PCI BIOS interface.
  34  *      Alan Cox        <alan@redhat.com>:      Fixed the out of memory
  35  *                                              handling.
  36  *
  37  *      Torben Mathiasen <torben.mathiasen@compaq.com> New Maintainer!
  38  *
  39  *      v1.1 Dec 20, 1999    - Removed linux version checking
  40  *                             Patch from Tigran Aivazian.
  41  *                           - v1.1 includes Alan's SMP updates.
  42  *                           - We still have problems on SMP though,
  43  *                             but I'm looking into that.
  44  *
  45  *      v1.2 Jan 02, 2000    - Hopefully fixed the SMP deadlock.
  46  *                           - Removed dependency of HZ being 100.
  47  *                           - We now allow higher priority timers to
  48  *                             overwrite timers like TLAN_TIMER_ACTIVITY
  49  *                             Patch from John Cagle <john.cagle@compaq.com>.
  50  *                           - Fixed a few compiler warnings.
  51  *
  52  *      v1.3 Feb 04, 2000    - Fixed the remaining HZ issues.
  53  *                           - Removed call to pci_present().
  54  *                           - Removed SA_INTERRUPT flag from irq handler.
  55  *                           - Added __init and __initdata to reduce resisdent
  56  *                             code size.
  57  *                           - Driver now uses module_init/module_exit.
  58  *                           - Rewrote init_module and tlan_probe to
  59  *                             share a lot more code. We now use tlan_probe
  60  *                             with builtin and module driver.
  61  *                           - Driver ported to new net API.
  62  *                           - tlan.txt has been reworked to reflect current
  63  *                             driver (almost)
  64  *                           - Other minor stuff
  65  *
  66  *      v1.4 Feb 10, 2000    - Updated with more changes required after Dave's
  67  *                             network cleanup in 2.3.43pre7 (Tigran & myself)
  68  *                           - Minor stuff.
  69  *
  70  *      v1.5 March 22, 2000  - Fixed another timer bug that would hang the driver
  71  *                             if no cable/link were present.
  72  *                           - Cosmetic changes.
  73  *                           - TODO: Port completely to new PCI/DMA API
  74  *                                   Auto-Neg fallback.
  75  *
  76  *      v1.6 April 04, 2000  - Fixed driver support for kernel-parameters. Haven't
  77  *                             tested it though, as the kernel support is currently
  78  *                             broken (2.3.99p4p3).
  79  *                           - Updated tlan.txt accordingly.
  80  *                           - Adjusted minimum/maximum frame length.
  81  *                           - There is now a TLAN website up at
  82  *                             http://tlan.kernel.dk
  83  *
  84  *      v1.7 April 07, 2000  - Started to implement custom ioctls. Driver now
  85  *                             reports PHY information when used with Donald
  86  *                             Beckers userspace MII diagnostics utility.
  87  *
  88  *      v1.8 April 23, 2000  - Fixed support for forced speed/duplex settings.
  89  *                           - Added link information to Auto-Neg and forced
  90  *                             modes. When NIC operates with auto-neg the driver
  91  *                             will report Link speed & duplex modes as well as
  92  *                             link partner abilities. When forced link is used,
  93  *                             the driver will report status of the established
  94  *                             link.
  95  *                             Please read tlan.txt for additional information.
  96  *                           - Removed call to check_region(), and used
  97  *                             return value of request_region() instead.
  98  *
  99  *      v1.8a May 28, 2000   - Minor updates.
 100  *
 101  *      v1.9 July 25, 2000   - Fixed a few remaining Full-Duplex issues.
 102  *                           - Updated with timer fixes from Andrew Morton.
 103  *                           - Fixed module race in TLan_Open.
 104  *                           - Added routine to monitor PHY status.
 105  *                           - Added activity led support for Proliant devices.
 106  *
 107  *      v1.10 Aug 30, 2000   - Added support for EISA based tlan controllers
 108  *                             like the Compaq NetFlex3/E.
 109  *                           - Rewrote tlan_probe to better handle multiple
 110  *                             bus probes. Probing and device setup is now
 111  *                             done through TLan_Probe and TLan_init_one. Actual
 112  *                             hardware probe is done with kernel API and
 113  *                             TLan_EisaProbe.
 114  *                           - Adjusted debug information for probing.
 115  *                           - Fixed bug that would cause general debug information
 116  *                             to be printed after driver removal.
 117  *                           - Added transmit timeout handling.
 118  *                           - Fixed OOM return values in tlan_probe.
 119  *                           - Fixed possible mem leak in tlan_exit
 120  *                             (now tlan_remove_one).
 121  *                           - Fixed timer bug in TLan_phyMonitor.
 122  *                           - This driver version is alpha quality, please
 123  *                             send me any bug issues you may encounter.
 124  *
 125  *      v1.11 Aug 31, 2000   - Do not try to register irq 0 if no irq line was
 126  *                             set for EISA cards.
 127  *                           - Added support for NetFlex3/E with nibble-rate
 128  *                             10Base-T PHY. This is untestet as I haven't got
 129  *                             one of these cards.
 130  *                           - Fixed timer being added twice.
 131  *                           - Disabled PhyMonitoring by default as this is
 132  *                             work in progress. Define MONITOR to enable it.
 133  *                           - Now we don't display link info with PHYs that
 134  *                             doesn't support it (level1).
 135  *                           - Incresed tx_timeout beacuse of auto-neg.
 136  *                           - Adjusted timers for forced speeds.
 137  *
 138  *      v1.12 Oct 12, 2000   - Minor fixes (memleak, init, etc.)
 139  *
 140  *      v1.13 Nov 28, 2000   - Stop flooding console with auto-neg issues
 141  *                             when link can't be established.
 142  *                           - Added the bbuf option as a kernel parameter.
 143  *                           - Fixed ioaddr probe bug.
 144  *                           - Fixed stupid deadlock with MII interrupts.
 145  *                           - Added support for speed/duplex selection with
 146  *                             multiple nics.
 147  *                           - Added partly fix for TX Channel lockup with
 148  *                             TLAN v1.0 silicon. This needs to be investigated
 149  *                             further.
 150  *
 151  *      v1.14 Dec 16, 2000   - Added support for servicing multiple frames per.
 152  *                             interrupt. Thanks goes to
 153  *                             Adam Keys <adam@ti.com>
 154  *                             Denis Beaudoin <dbeaudoin@ti.com>
 155  *                             for providing the patch.
 156  *                           - Fixed auto-neg output when using multiple
 157  *                             adapters.
 158  *                           - Converted to use new taskq interface.
 159  *
 160  *      v1.14a Jan 6, 2001   - Minor adjustments (spinlocks, etc.)
 161  *
 162  *      Samuel Chessman <chessman@tux.org> New Maintainer!
 163  *
 164  *      v1.15 Apr 4, 2002    - Correct operation when aui=1 to be
 165  *                             10T half duplex no loopback
 166  *                             Thanks to Gunnar Eikman
 167  *******************************************************************************/
 168
 169 #include <linux/module.h>
 170 #include <linux/init.h>
 171 #include <linux/ioport.h>
 172 #include <linux/eisa.h>
 173 #include <linux/pci.h>
 174 #include <linux/dma-mapping.h>
 175 #include <linux/netdevice.h>
 176 #include <linux/etherdevice.h>
 177 #include <linux/delay.h>
 178 #include <linux/spinlock.h>
 179 #include <linux/workqueue.h>
 180 #include <linux/mii.h>
 181
 182 #include "tlan.h"
 183
 184 typedef u32 (TLanIntVectorFunc)( struct net_device *, u16 );
 185
 186
 187 /* For removing EISA devices */
 188 static  struct net_device       *TLan_Eisa_Devices;
 189
 190 static  int             TLanDevicesInstalled;
 191
 192 /* Set speed, duplex and aui settings */
 193 static  int aui[MAX_TLAN_BOARDS];
 194 static  int duplex[MAX_TLAN_BOARDS];
 195 static  int speed[MAX_TLAN_BOARDS];
 196 static  int boards_found;
 197 module_param_array(aui, int, NULL, 0);
 198 module_param_array(duplex, int, NULL, 0);
 199 module_param_array(speed, int, NULL, 0);
 200 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
 201 MODULE_PARM_DESC(duplex, "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
 202 MODULE_PARM_DESC(speed, "ThunderLAN port speen setting(s) (0,10,100)");
 203
 204 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
 205 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
 206 MODULE_LICENSE("GPL");
 207
 208
 209 /* Define this to enable Link beat monitoring */
 210 #undef MONITOR
 211
 212 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
 213 static  int             debug;
 214 module_param(debug, int, 0);
 215 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
 216
 217 static  int             bbuf;
 218 module_param(bbuf, int, 0);
 219 MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
 220
 221 static  u8              *TLanPadBuffer;
 222 static  dma_addr_t      TLanPadBufferDMA;
 223 static  char            TLanSignature[] = "TLAN";
 224 static  const char tlan_banner[] = "ThunderLAN driver v1.15\n";
 225 static  int tlan_have_pci;
 226 static  int tlan_have_eisa;
 227
 228 static const char *media[] = {
 229         "10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ",
 230         "100baseTx-FD", "100baseT4", NULL
 231 };
 232
 233 static struct board {
 234         const char      *deviceLabel;
 235         u32             flags;
 236         u16             addrOfs;
 237 } board_info[] = {
 238         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 239         { "Compaq Netelligent 10/100 TX PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 240         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 241         { "Compaq NetFlex-3/P", TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 242         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
 243         { "Compaq Netelligent Integrated 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 244         { "Compaq Netelligent Dual 10/100 TX PCI UTP", TLAN_ADAPTER_NONE, 0x83 },
 245         { "Compaq Netelligent 10/100 TX Embedded UTP", TLAN_ADAPTER_NONE, 0x83 },
 246         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
 247         { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xF8 },
 248         { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xF8 },
 249         { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
 250         { "Compaq Netelligent 10 T/2 PCI UTP/Coax", TLAN_ADAPTER_NONE, 0x83 },
 251         { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED |     /* EISA card */
 252                                 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
 253         { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
 254 };
 255
 256 static struct pci_device_id tlan_pci_tbl[] = {
 257         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
 258                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 259         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
 260                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
 261         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
 262                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
 263         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
 264                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
 265         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
 266                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 267         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
 268                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
 269         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
 270                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
 271         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
 272                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
 273         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
 274                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
 275         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
 276                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
 277         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
 278                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
 279         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
 280                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
 281         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
 282                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
 283         { 0,}
 284 };
 285 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
 286
 287 static void     TLan_EisaProbe( void );
 288 static void     TLan_Eisa_Cleanup( void );
 289 static int      TLan_Init( struct net_device * );
 290 static int      TLan_Open( struct net_device *dev );
 291 static int      TLan_StartTx( struct sk_buff *, struct net_device *);
 292 static irqreturn_t TLan_HandleInterrupt( int, void *);
 293 static int      TLan_Close( struct net_device *);
 294 static struct   net_device_stats *TLan_GetStats( struct net_device *);
 295 static void     TLan_SetMulticastList( struct net_device *);
 296 static int      TLan_ioctl( struct net_device *dev, struct ifreq *rq, int cmd);
 297 static int      TLan_probe1( struct pci_dev *pdev, long ioaddr, int irq, int rev, const struct pci_device_id *ent);
 298 static void     TLan_tx_timeout( struct net_device *dev);
 299 static void     TLan_tx_timeout_work(struct work_struct *work);
 300 static int      tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);
 301
 302 static u32      TLan_HandleInvalid( struct net_device *, u16 );
 303 static u32      TLan_HandleTxEOF( struct net_device *, u16 );
 304 static u32      TLan_HandleStatOverflow( struct net_device *, u16 );
 305 static u32      TLan_HandleRxEOF( struct net_device *, u16 );
 306 static u32      TLan_HandleDummy( struct net_device *, u16 );
 307 static u32      TLan_HandleTxEOC( struct net_device *, u16 );
 308 static u32      TLan_HandleStatusCheck( struct net_device *, u16 );
 309 static u32      TLan_HandleRxEOC( struct net_device *, u16 );
 310
 311 static void     TLan_Timer( unsigned long );
 312
 313 static void     TLan_ResetLists( struct net_device * );
 314 static void     TLan_FreeLists( struct net_device * );
 315 static void     TLan_PrintDio( u16 );
 316 static void     TLan_PrintList( TLanList *, char *, int );
 317 static void     TLan_ReadAndClearStats( struct net_device *, int );
 318 static void     TLan_ResetAdapter( struct net_device * );
 319 static void     TLan_FinishReset( struct net_device * );
 320 static void     TLan_SetMac( struct net_device *, int areg, char *mac );
 321
 322 static void     TLan_PhyPrint( struct net_device * );
 323 static void     TLan_PhyDetect( struct net_device * );
 324 static void     TLan_PhyPowerDown( struct net_device * );
 325 static void     TLan_PhyPowerUp( struct net_device * );
 326 static void     TLan_PhyReset( struct net_device * );
 327 static void     TLan_PhyStartLink( struct net_device * );
 328 static void     TLan_PhyFinishAutoNeg( struct net_device * );
 329 #ifdef MONITOR
 330 static void     TLan_PhyMonitor( struct net_device * );
 331 #endif
 332
 333 /*
 334 static int      TLan_PhyNop( struct net_device * );
 335 static int      TLan_PhyInternalCheck( struct net_device * );
 336 static int      TLan_PhyInternalService( struct net_device * );
 337 static int      TLan_PhyDp83840aCheck( struct net_device * );
 338 */
 339
 340 static int      TLan_MiiReadReg( struct net_device *, u16, u16, u16 * );
 341 static void     TLan_MiiSendData( u16, u32, unsigned );
 342 static void     TLan_MiiSync( u16 );
 343 static void     TLan_MiiWriteReg( struct net_device *, u16, u16, u16 );
 344
 345 static void     TLan_EeSendStart( u16 );
 346 static int      TLan_EeSendByte( u16, u8, int );
 347 static void     TLan_EeReceiveByte( u16, u8 *, int );
 348 static int      TLan_EeReadByte( struct net_device *, u8, u8 * );
 349
 350
 351 static void
 352 TLan_StoreSKB( struct tlan_list_tag *tag, struct sk_buff *skb)
 353 {
 354         unsigned long addr = (unsigned long)skb;
 355         tag->buffer[9].address = (u32)addr;
 356         addr >>= 31;    /* >>= 32 is undefined for 32bit arch, stupid C */
 357         addr >>= 1;
 358         tag->buffer[8].address = (u32)addr;
 359 }
 360
 361 static struct sk_buff *
 362 TLan_GetSKB( struct tlan_list_tag *tag)
 363 {
 364         unsigned long addr = tag->buffer[8].address;
 365         addr <<= 31;
 366         addr <<= 1;
 367         addr |= tag->buffer[9].address;
 368         return (struct sk_buff *) addr;
 369 }
 370
 371
 372 static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
 373         TLan_HandleInvalid,
 374         TLan_HandleTxEOF,
 375         TLan_HandleStatOverflow,
 376         TLan_HandleRxEOF,
 377         TLan_HandleDummy,
 378         TLan_HandleTxEOC,
 379         TLan_HandleStatusCheck,
 380         TLan_HandleRxEOC
 381 };
 382
 383 static inline void
 384 TLan_SetTimer( struct net_device *dev, u32 ticks, u32 type )
 385 {
 386         TLanPrivateInfo *priv = netdev_priv(dev);
 387         unsigned long flags = 0;
 388
 389         if (!in_irq())
 390                 spin_lock_irqsave(&priv->lock, flags);
 391         if ( priv->timer.function != NULL &&
 392                 priv->timerType != TLAN_TIMER_ACTIVITY ) {
 393                 if (!in_irq())
 394                         spin_unlock_irqrestore(&priv->lock, flags);
 395                 return;
 396         }
 397         priv->timer.function = &TLan_Timer;
 398         if (!in_irq())
 399                 spin_unlock_irqrestore(&priv->lock, flags);
 400
 401         priv->timer.data = (unsigned long) dev;
 402         priv->timerSetAt = jiffies;
 403         priv->timerType = type;
 404         mod_timer(&priv->timer, jiffies + ticks);
 405
 406 } /* TLan_SetTimer */
 407
 408
 409 /*****************************************************************************
 410 ******************************************************************************
 411
 412         ThunderLAN Driver Primary Functions
 413
 414         These functions are more or less common to all Linux network drivers.
 415
 416 ******************************************************************************
 417 *****************************************************************************/
 418
 419
 420
 421
 422
 423         /***************************************************************
 424          *      tlan_remove_one
 425          *
 426          *      Returns:
 427          *              Nothing
 428          *      Parms:
 429          *              None
 430          *
 431          *      Goes through the TLanDevices list and frees the device
 432          *      structs and memory associated with each device (lists
 433          *      and buffers).  It also ureserves the IO port regions
 434          *      associated with this device.
 435          *
 436          **************************************************************/
 437
 438
 439 static void __devexit tlan_remove_one( struct pci_dev *pdev)
 440 {
 441         struct net_device *dev = pci_get_drvdata( pdev );
 442         TLanPrivateInfo *priv = netdev_priv(dev);
 443
 444         unregister_netdev( dev );
 445
 446         if ( priv->dmaStorage ) {
 447                 pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage, priv->dmaStorageDMA );
 448         }
 449
 450 #ifdef CONFIG_PCI
 451         pci_release_regions(pdev);
 452 #endif
 453
 454         free_netdev( dev );
 455
 456         pci_set_drvdata( pdev, NULL );
 457 }
 458
 459 static struct pci_driver tlan_driver = {
 460         .name           = "tlan",
 461         .id_table       = tlan_pci_tbl,
 462         .probe          = tlan_init_one,
 463         .remove         = __devexit_p(tlan_remove_one),
 464 };
 465
 466 static int __init tlan_probe(void)
 467 {
 468         int rc = -ENODEV;
 469
 470         printk(KERN_INFO "%s", tlan_banner);
 471
 472         TLanPadBuffer = (u8 *) pci_alloc_consistent(NULL, TLAN_MIN_FRAME_SIZE, &TLanPadBufferDMA);
 473
 474         if (TLanPadBuffer == NULL) {
 475                 printk(KERN_ERR "TLAN: Could not allocate memory for pad buffer.\n");
 476                 rc = -ENOMEM;
 477                 goto err_out;
 478         }
 479
 480         memset(TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE);
 481
 482         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 483
 484         /* Use new style PCI probing. Now the kernel will
 485            do most of this for us */
 486         rc = pci_register_driver(&tlan_driver);
 487
 488         if (rc != 0) {
 489                 printk(KERN_ERR "TLAN: Could not register pci driver.\n");
 490                 goto err_out_pci_free;
 491         }
 492
 493         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
 494         TLan_EisaProbe();
 495
 496         printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d  EISA: %d\n",
 497                  TLanDevicesInstalled, TLanDevicesInstalled == 1 ? "" : "s",
 498                  tlan_have_pci, tlan_have_eisa);
 499
 500         if (TLanDevicesInstalled == 0) {
 501                 rc = -ENODEV;
 502                 goto  err_out_pci_unreg;
 503         }
 504         return 0;
 505
 506 err_out_pci_unreg:
 507         pci_unregister_driver(&tlan_driver);
 508 err_out_pci_free:
 509         pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
 510 err_out:
 511         return rc;
 512 }
 513
 514
 515 static int __devinit tlan_init_one( struct pci_dev *pdev,
 516                                     const struct pci_device_id *ent)
 517 {
 518         return TLan_probe1( pdev, -1, -1, 0, ent);
 519 }
 520
 521
 522 /*
 523         ***************************************************************
 524          *      tlan_probe1
 525          *
 526          *      Returns:
 527          *              0 on success, error code on error
 528          *      Parms:
 529          *              none
 530          *
 531          *      The name is lower case to fit in with all the rest of
 532          *      the netcard_probe names.  This function looks for
 533          *      another TLan based adapter, setting it up with the
 534          *      allocated device struct if one is found.
 535          *      tlan_probe has been ported to the new net API and
 536          *      now allocates its own device structure. This function
 537          *      is also used by modules.
 538          *
 539          **************************************************************/
 540
 541 static int __devinit TLan_probe1(struct pci_dev *pdev,
 542                                 long ioaddr, int irq, int rev, const struct pci_device_id *ent )
 543 {
 544
 545         struct net_device  *dev;
 546         TLanPrivateInfo    *priv;
 547         u16                device_id;
 548         int                reg, rc = -ENODEV;
 549
 550 #ifdef CONFIG_PCI
 551         if (pdev) {
 552                 rc = pci_enable_device(pdev);
 553                 if (rc)
 554                         return rc;
 555
 556                 rc = pci_request_regions(pdev, TLanSignature);
 557                 if (rc) {
 558                         printk(KERN_ERR "TLAN: Could not reserve IO regions\n");
 559                         goto err_out;
 560                 }
 561         }
 562 #endif  /*  CONFIG_PCI  */
 563
 564         dev = alloc_etherdev(sizeof(TLanPrivateInfo));
 565         if (dev == NULL) {
 566                 printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
 567                 rc = -ENOMEM;
 568                 goto err_out_regions;
 569         }
 570         SET_NETDEV_DEV(dev, &pdev->dev);
 571
 572         priv = netdev_priv(dev);
 573
 574         priv->pciDev = pdev;
 575         priv->dev = dev;
 576
 577         /* Is this a PCI device? */
 578         if (pdev) {
 579                 u32                pci_io_base = 0;
 580
 581                 priv->adapter = &board_info[ent->driver_data];
 582
 583                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 584                 if (rc) {
 585                         printk(KERN_ERR "TLAN: No suitable PCI mapping available.\n");
 586                         goto err_out_free_dev;
 587                 }
 588
 589                 for ( reg= 0; reg <= 5; reg ++ ) {
 590                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 591                                 pci_io_base = pci_resource_start(pdev, reg);
 592                                 TLAN_DBG( TLAN_DEBUG_GNRL, "IO mapping is available at %x.\n",
 593                                                 pci_io_base);
 594                                 break;
 595                         }
 596                 }
 597                 if (!pci_io_base) {
 598                         printk(KERN_ERR "TLAN: No IO mappings available\n");
 599                         rc = -EIO;
 600                         goto err_out_free_dev;
 601                 }
 602
 603                 dev->base_addr = pci_io_base;
 604                 dev->irq = pdev->irq;
 605                 priv->adapterRev = pdev->revision;
 606                 pci_set_master(pdev);
 607                 pci_set_drvdata(pdev, dev);
 608
 609         } else  {     /* EISA card */
 610                 /* This is a hack. We need to know which board structure
 611                  * is suited for this adapter */
 612                 device_id = inw(ioaddr + EISA_ID2);
 613                 priv->is_eisa = 1;
 614                 if (device_id == 0x20F1) {
 615                         priv->adapter = &board_info[13];        /* NetFlex-3/E */
 616                         priv->adapterRev = 23;                  /* TLAN 2.3 */
 617                 } else {
 618                         priv->adapter = &board_info[14];
 619                         priv->adapterRev = 10;                  /* TLAN 1.0 */
 620                 }
 621                 dev->base_addr = ioaddr;
 622                 dev->irq = irq;
 623         }
 624
 625         /* Kernel parameters */
 626         if (dev->mem_start) {
 627                 priv->aui    = dev->mem_start & 0x01;
 628                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0 : (dev->mem_start & 0x06) >> 1;
 629                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0 : (dev->mem_start & 0x18) >> 3;
 630
 631                 if (priv->speed == 0x1) {
 632                         priv->speed = TLAN_SPEED_10;
 633                 } else if (priv->speed == 0x2) {
 634                         priv->speed = TLAN_SPEED_100;
 635                 }
 636                 debug = priv->debug = dev->mem_end;
 637         } else {
 638                 priv->aui    = aui[boards_found];
 639                 priv->speed  = speed[boards_found];
 640                 priv->duplex = duplex[boards_found];
 641                 priv->debug = debug;
 642         }
 643
 644         /* This will be used when we get an adapter error from
 645          * within our irq handler */
 646         INIT_WORK(&priv->tlan_tqueue, TLan_tx_timeout_work);
 647
 648         spin_lock_init(&priv->lock);
 649
 650         rc = TLan_Init(dev);
 651         if (rc) {
 652                 printk(KERN_ERR "TLAN: Could not set up device.\n");
 653                 goto err_out_free_dev;
 654         }
 655
 656         rc = register_netdev(dev);
 657         if (rc) {
 658                 printk(KERN_ERR "TLAN: Could not register device.\n");
 659                 goto err_out_uninit;
 660         }
 661
 662
 663         TLanDevicesInstalled++;
 664         boards_found++;
 665
 666         /* pdev is NULL if this is an EISA device */
 667         if (pdev)
 668                 tlan_have_pci++;
 669         else {
 670                 priv->nextDevice = TLan_Eisa_Devices;
 671                 TLan_Eisa_Devices = dev;
 672                 tlan_have_eisa++;
 673         }
 674
 675         printk(KERN_INFO "TLAN: %s irq=%2d, io=%04x, %s, Rev. %d\n",
 676                         dev->name,
 677                         (int) dev->irq,
 678                         (int) dev->base_addr,
 679                         priv->adapter->deviceLabel,
 680                         priv->adapterRev);
 681         return 0;
 682
 683 err_out_uninit:
 684         pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage,
 685                             priv->dmaStorageDMA );
 686 err_out_free_dev:
 687         free_netdev(dev);
 688 err_out_regions:
 689 #ifdef CONFIG_PCI
 690         if (pdev)
 691                 pci_release_regions(pdev);
 692 #endif
 693 err_out:
 694         if (pdev)
 695                 pci_disable_device(pdev);
 696         return rc;
 697 }
 698
 699
 700 static void TLan_Eisa_Cleanup(void)
 701 {
 702         struct net_device *dev;
 703         TLanPrivateInfo *priv;
 704
 705         while( tlan_have_eisa ) {
 706                 dev = TLan_Eisa_Devices;
 707                 priv = netdev_priv(dev);
 708                 if (priv->dmaStorage) {
 709                         pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage, priv->dmaStorageDMA );
 710                 }
 711                 release_region( dev->base_addr, 0x10);
 712                 unregister_netdev( dev );
 713                 TLan_Eisa_Devices = priv->nextDevice;
 714                 free_netdev( dev );
 715                 tlan_have_eisa--;
 716         }
 717 }
 718
 719
 720 static void __exit tlan_exit(void)
 721 {
 722         pci_unregister_driver(&tlan_driver);
 723
 724         if (tlan_have_eisa)
 725                 TLan_Eisa_Cleanup();
 726
 727         pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
 728
 729 }
 730
 731
 732 /* Module loading/unloading */
 733 module_init(tlan_probe);
 734 module_exit(tlan_exit);
 735
 736
 737
 738         /**************************************************************
 739          *      TLan_EisaProbe
 740          *
 741          *      Returns: 0 on success, 1 otherwise
 742          *
 743          *      Parms:   None
 744          *
 745          *
 746          *      This functions probes for EISA devices and calls
 747          *      TLan_probe1 when one is found.
 748          *
 749          *************************************************************/
 750
 751 static void  __init TLan_EisaProbe (void)
 752 {
 753         long    ioaddr;
 754         int     rc = -ENODEV;
 755         int     irq;
 756         u16     device_id;
 757
 758         if (!EISA_bus) {
 759                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
 760                 return;
 761         }
 762
 763         /* Loop through all slots of the EISA bus */
 764         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
 765
 766         TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC80, inw(ioaddr + EISA_ID));
 767         TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n", (int) ioaddr + 0xC82, inw(ioaddr + EISA_ID2));
 768
 769
 770                 TLAN_DBG(TLAN_DEBUG_PROBE, "Probing for EISA adapter at IO: 0x%4x : ",
 771                                         (int) ioaddr);
 772                 if (request_region(ioaddr, 0x10, TLanSignature) == NULL)
 773                         goto out;
 774
 775                 if (inw(ioaddr + EISA_ID) != 0x110E) {
 776                         release_region(ioaddr, 0x10);
 777                         goto out;
 778                 }
 779
 780                 device_id = inw(ioaddr + EISA_ID2);
 781                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
 782                         release_region (ioaddr, 0x10);
 783                         goto out;
 784                 }
 785
 786                 if (inb(ioaddr + EISA_CR) != 0x1) {     /* Check if adapter is enabled */
 787                         release_region (ioaddr, 0x10);
 788                         goto out2;
 789                 }
 790
 791                 if (debug == 0x10)
 792                         printk("Found one\n");
 793
 794
 795                 /* Get irq from board */
 796                 switch (inb(ioaddr + 0xCC0)) {
 797                         case(0x10):
 798                                 irq=5;
 799                                 break;
 800                         case(0x20):
 801                                 irq=9;
 802                                 break;
 803                         case(0x40):
 804                                 irq=10;
 805                                 break;
 806                         case(0x80):
 807                                 irq=11;
 808                                 break;
 809                         default:
 810                                 goto out;
 811                 }
 812
 813
 814                 /* Setup the newly found eisa adapter */
 815                 rc = TLan_probe1( NULL, ioaddr, irq,
 816                                         12, NULL);
 817                 continue;
 818
 819                 out:
 820                         if (debug == 0x10)
 821                                 printk("None found\n");
 822                         continue;
 823
 824                 out2:   if (debug == 0x10)
 825                                 printk("Card found but it is not enabled, skipping\n");
 826                         continue;
 827
 828         }
 829
 830 } /* TLan_EisaProbe */
 831
 832 #ifdef CONFIG_NET_POLL_CONTROLLER
 833 static void TLan_Poll(struct net_device *dev)
 834 {
 835         disable_irq(dev->irq);
 836         TLan_HandleInterrupt(dev->irq, dev);
 837         enable_irq(dev->irq);
 838 }
 839 #endif
 840
 841
 842
 843
 844         /***************************************************************
 845          *      TLan_Init
 846          *
 847          *      Returns:
 848          *              0 on success, error code otherwise.
 849          *      Parms:
 850          *              dev     The structure of the device to be
 851          *                      init'ed.
 852          *
 853          *      This function completes the initialization of the
 854          *      device structure and driver.  It reserves the IO
 855          *      addresses, allocates memory for the lists and bounce
 856          *      buffers, retrieves the MAC address from the eeprom
 857          *      and assignes the device's methods.
 858          *
 859          **************************************************************/
 860
 861 static int TLan_Init( struct net_device *dev )
 862 {
 863         int             dma_size;
 864         int             err;
 865         int             i;
 866         TLanPrivateInfo *priv;
 867
 868         priv = netdev_priv(dev);
 869
 870         if ( bbuf ) {
 871                 dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
 872                    * ( sizeof(TLanList) + TLAN_MAX_FRAME_SIZE );
 873         } else {
 874                 dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
 875                    * ( sizeof(TLanList) );
 876         }
 877         priv->dmaStorage = pci_alloc_consistent(priv->pciDev, dma_size, &priv->dmaStorageDMA);
 878         priv->dmaSize = dma_size;
 879
 880         if ( priv->dmaStorage == NULL ) {
 881                 printk(KERN_ERR "TLAN:  Could not allocate lists and buffers for %s.\n",
 882                         dev->name );
 883                 return -ENOMEM;
 884         }
 885         memset( priv->dmaStorage, 0, dma_size );
 886         priv->rxList = (TLanList *)
 887                        ( ( ( (u32) priv->dmaStorage ) + 7 ) & 0xFFFFFFF8 );
 888         priv->rxListDMA = ( ( ( (u32) priv->dmaStorageDMA ) + 7 ) & 0xFFFFFFF8 );
 889         priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
 890         priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS;
 891         if ( bbuf ) {
 892                 priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS );
 893                 priv->rxBufferDMA =priv->txListDMA + sizeof(TLanList) * TLAN_NUM_TX_LISTS;
 894                 priv->txBuffer = priv->rxBuffer + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
 895                 priv->txBufferDMA = priv->rxBufferDMA + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
 896         }
 897
 898         err = 0;
 899         for ( i = 0;  i < 6 ; i++ )
 900                 err |= TLan_EeReadByte( dev,
 901                                         (u8) priv->adapter->addrOfs + i,
 902                                         (u8 *) &dev->dev_addr[i] );
 903         if ( err ) {
 904                 printk(KERN_ERR "TLAN: %s: Error reading MAC from eeprom: %d\n",
 905                         dev->name,
 906                         err );
 907         }
 908         dev->addr_len = 6;
 909
 910         netif_carrier_off(dev);
 911
 912         /* Device methods */
 913         dev->open = &TLan_Open;
 914         dev->hard_start_xmit = &TLan_StartTx;
 915         dev->stop = &TLan_Close;
 916         dev->get_stats = &TLan_GetStats;
 917         dev->set_multicast_list = &TLan_SetMulticastList;
 918         dev->do_ioctl = &TLan_ioctl;
 919 #ifdef CONFIG_NET_POLL_CONTROLLER
 920         dev->poll_controller = &TLan_Poll;
 921 #endif
 922         dev->tx_timeout = &TLan_tx_timeout;
 923         dev->watchdog_timeo = TX_TIMEOUT;
 924
 925         return 0;
 926
 927 } /* TLan_Init */
 928
 929
 930
 931
 932         /***************************************************************
 933          *      TLan_Open
 934          *
 935          *      Returns:
 936          *              0 on success, error code otherwise.
 937          *      Parms:
 938          *              dev     Structure of device to be opened.
 939          *
 940          *      This routine puts the driver and TLAN adapter in a
 941          *      state where it is ready to send and receive packets.
 942          *      It allocates the IRQ, resets and brings the adapter
 943          *      out of reset, and allows interrupts.  It also delays
 944          *      the startup for autonegotiation or sends a Rx GO
 945          *      command to the adapter, as appropriate.
 946          *
 947          **************************************************************/
 948
 949 static int TLan_Open( struct net_device *dev )
 950 {
 951         TLanPrivateInfo *priv = netdev_priv(dev);
 952         int             err;
 953
 954         priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
 955         err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED, TLanSignature, dev );
 956
 957         if ( err ) {
 958                 printk(KERN_ERR "TLAN:  Cannot open %s because IRQ %d is already in use.\n", dev->name, dev->irq );
 959                 return err;
 960         }
 961
 962         init_timer(&priv->timer);
 963         netif_start_queue(dev);
 964
 965         /* NOTE: It might not be necessary to read the stats before a
 966                          reset if you don't care what the values are.
 967         */
 968         TLan_ResetLists( dev );
 969         TLan_ReadAndClearStats( dev, TLAN_IGNORE );
 970         TLan_ResetAdapter( dev );
 971
 972         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n", dev->name, priv->tlanRev );
 973
 974         return 0;
 975
 976 } /* TLan_Open */
 977
 978
 979
 980         /**************************************************************
 981          *      TLan_ioctl
 982          *
 983          *      Returns:
 984          *              0 on success, error code otherwise
 985          *      Params:
 986          *              dev     structure of device to receive ioctl.
 987          *
 988          *              rq      ifreq structure to hold userspace data.
 989          *
 990          *              cmd     ioctl command.
 991          *
 992          *
 993          *************************************************************/
 994
 995 static int TLan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 996 {
 997         TLanPrivateInfo *priv = netdev_priv(dev);
 998         struct mii_ioctl_data *data = if_mii(rq);
 999         u32 phy   = priv->phy[priv->phyNum];
1000
1001         if (!priv->phyOnline)
1002                 return -EAGAIN;
1003
1004         switch(cmd) {
1005         case SIOCGMIIPHY:               /* Get address of MII PHY in use. */
1006                         data->phy_id = phy;
1007
1008
1009         case SIOCGMIIREG:               /* Read MII PHY register. */
1010                         TLan_MiiReadReg(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, &data->val_out);
1011                         return 0;
1012
1013
1014         case SIOCSMIIREG:               /* Write MII PHY register. */
1015                         if (!capable(CAP_NET_ADMIN))
1016                                 return -EPERM;
1017                         TLan_MiiWriteReg(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
1018                         return 0;
1019                 default:
1020                         return -EOPNOTSUPP;
1021         }
1022 } /* tlan_ioctl */
1023
1024
1025         /***************************************************************
1026          *      TLan_tx_timeout
1027          *
1028          *      Returns: nothing
1029          *
1030          *      Params:
1031          *              dev     structure of device which timed out
1032          *                      during transmit.
1033          *
1034          **************************************************************/
1035
1036 static void TLan_tx_timeout(struct net_device *dev)
1037 {
1038
1039         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1040
1041         /* Ok so we timed out, lets see what we can do about it...*/
1042         TLan_FreeLists( dev );
1043         TLan_ResetLists( dev );
1044         TLan_ReadAndClearStats( dev, TLAN_IGNORE );
1045         TLan_ResetAdapter( dev );
1046         dev->trans_start = jiffies;
1047         netif_wake_queue( dev );
1048
1049 }
1050
1051
1052         /***************************************************************
1053          *      TLan_tx_timeout_work
1054          *
1055          *      Returns: nothing
1056          *
1057          *      Params:
1058          *              work    work item of device which timed out
1059          *
1060          **************************************************************/
1061
1062 static void TLan_tx_timeout_work(struct work_struct *work)
1063 {
1064         TLanPrivateInfo *priv =
1065                 container_of(work, TLanPrivateInfo, tlan_tqueue);
1066
1067         TLan_tx_timeout(priv->dev);
1068 }
1069
1070
1071
1072         /***************************************************************
1073          *      TLan_StartTx
1074          *
1075          *      Returns:
1076          *              0 on success, non-zero on failure.
1077          *      Parms:
1078          *              skb     A pointer to the sk_buff containing the
1079          *                      frame to be sent.
1080          *              dev     The device to send the data on.
1081          *
1082          *      This function adds a frame to the Tx list to be sent
1083          *      ASAP.  First it verifies that the adapter is ready and
1084          *      there is room in the queue.  Then it sets up the next
1085          *      available list, copies the frame to the corresponding
1086          *      buffer.  If the adapter Tx channel is idle, it gives
1087          *      the adapter a Tx Go command on the list, otherwise it
1088          *      sets the forward address of the previous list to point
1089          *      to this one.  Then it frees the sk_buff.
1090          *
1091          **************************************************************/
1092
1093 static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
1094 {
1095         TLanPrivateInfo *priv = netdev_priv(dev);
1096         TLanList        *tail_list;
1097         dma_addr_t      tail_list_phys;
1098         u8              *tail_buffer;
1099         int             pad;
1100         unsigned long   flags;
1101
1102         if ( ! priv->phyOnline ) {
1103                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n", dev->name );
1104                 dev_kfree_skb_any(skb);
1105                 return 0;
1106         }
1107
1108         tail_list = priv->txList + priv->txTail;
1109         tail_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txTail;
1110
1111         if ( tail_list->cStat != TLAN_CSTAT_UNUSED ) {
1112                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n", dev->name, priv->txHead, priv->txTail );
1113                 netif_stop_queue(dev);
1114                 priv->txBusyCount++;
1115                 return 1;
1116         }
1117
1118         tail_list->forward = 0;
1119
1120         if ( bbuf ) {
1121                 tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE );
1122                 skb_copy_from_linear_data(skb, tail_buffer, skb->len);
1123         } else {
1124                 tail_list->buffer[0].address = pci_map_single(priv->pciDev, skb->data, skb->len, PCI_DMA_TODEVICE);
1125                 TLan_StoreSKB(tail_list, skb);
1126         }
1127
1128         pad = TLAN_MIN_FRAME_SIZE - skb->len;
1129
1130         if ( pad > 0 ) {
1131                 tail_list->frameSize = (u16) skb->len + pad;
1132                 tail_list->buffer[0].count = (u32) skb->len;
1133                 tail_list->buffer[1].count = TLAN_LAST_BUFFER | (u32) pad;
1134                 tail_list->buffer[1].address = TLanPadBufferDMA;
1135         } else {
1136                 tail_list->frameSize = (u16) skb->len;
1137                 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) skb->len;
1138                 tail_list->buffer[1].count = 0;
1139                 tail_list->buffer[1].address = 0;
1140         }
1141
1142         spin_lock_irqsave(&priv->lock, flags);
1143         tail_list->cStat = TLAN_CSTAT_READY;
1144         if ( ! priv->txInProgress ) {
1145                 priv->txInProgress = 1;
1146                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Starting TX on buffer %d\n", priv->txTail );
1147                 outl( tail_list_phys, dev->base_addr + TLAN_CH_PARM );
1148                 outl( TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD );
1149         } else {
1150                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Adding buffer %d to TX channel\n", priv->txTail );
1151                 if ( priv->txTail == 0 ) {
1152                         ( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward = tail_list_phys;
1153                 } else {
1154                         ( priv->txList + ( priv->txTail - 1 ) )->forward = tail_list_phys;
1155                 }
1156         }
1157         spin_unlock_irqrestore(&priv->lock, flags);
1158
1159         CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS );
1160
1161         if ( bbuf )
1162                 dev_kfree_skb_any(skb);
1163
1164         dev->trans_start = jiffies;
1165         return 0;
1166
1167 } /* TLan_StartTx */
1168
1169
1170
1171
1172         /***************************************************************
1173          *      TLan_HandleInterrupt
1174          *
1175          *      Returns:
1176          *              Nothing
1177          *      Parms:
1178          *              irq     The line on which the interrupt
1179          *                      occurred.
1180          *              dev_id  A pointer to the device assigned to
1181          *                      this irq line.
1182          *
1183          *      This function handles an interrupt generated by its
1184          *      assigned TLAN adapter.  The function deactivates
1185          *      interrupts on its adapter, records the type of
1186          *      interrupt, executes the appropriate subhandler, and
1187          *      acknowdges the interrupt to the adapter (thus
1188          *      re-enabling adapter interrupts.
1189          *
1190          **************************************************************/
1191
1192 static irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
1193 {
1194         u32             ack;
1195         struct net_device       *dev;
1196         u32             host_cmd;
1197         u16             host_int;
1198         int             type;
1199         TLanPrivateInfo *priv;
1200
1201         dev = dev_id;
1202         priv = netdev_priv(dev);
1203
1204         spin_lock(&priv->lock);
1205
1206         host_int = inw( dev->base_addr + TLAN_HOST_INT );
1207         outw( host_int, dev->base_addr + TLAN_HOST_INT );
1208
1209         type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
1210
1211         ack = TLanIntVector[type]( dev, host_int );
1212
1213         if ( ack ) {
1214                 host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
1215                 outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
1216         }
1217
1218         spin_unlock(&priv->lock);
1219
1220         return IRQ_HANDLED;
1221 } /* TLan_HandleInterrupts */
1222
1223
1224
1225
1226         /***************************************************************
1227          *      TLan_Close
1228          *
1229          *      Returns:
1230          *              An error code.
1231          *      Parms:
1232          *              dev     The device structure of the device to
1233          *                      close.
1234          *
1235          *      This function shuts down the adapter.  It records any
1236          *      stats, puts the adapter into reset state, deactivates
1237          *      its time as needed, and frees the irq it is using.
1238          *
1239          **************************************************************/
1240
1241 static int TLan_Close(struct net_device *dev)
1242 {
1243         TLanPrivateInfo *priv = netdev_priv(dev);
1244
1245         netif_stop_queue(dev);
1246         priv->neg_be_verbose = 0;
1247
1248         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1249         outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1250         if ( priv->timer.function != NULL ) {
1251                 del_timer_sync( &priv->timer );
1252                 priv->timer.function = NULL;
1253         }
1254
1255         free_irq( dev->irq, dev );
1256         TLan_FreeLists( dev );
1257         TLAN_DBG( TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name );
1258
1259         return 0;
1260
1261 } /* TLan_Close */
1262
1263
1264
1265
1266         /***************************************************************
1267          *      TLan_GetStats
1268          *
1269          *      Returns:
1270          *              A pointer to the device's statistics structure.
1271          *      Parms:
1272          *              dev     The device structure to return the
1273          *                      stats for.
1274          *
1275          *      This function updates the devices statistics by reading
1276          *      the TLAN chip's onboard registers.  Then it returns the
1277          *      address of the statistics structure.
1278          *
1279          **************************************************************/
1280
1281 static struct net_device_stats *TLan_GetStats( struct net_device *dev )
1282 {
1283         TLanPrivateInfo *priv = netdev_priv(dev);
1284         int i;
1285
1286         /* Should only read stats if open ? */
1287         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1288
1289         TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name, priv->rxEocCount );
1290         TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name, priv->txBusyCount );
1291         if ( debug & TLAN_DEBUG_GNRL ) {
1292                 TLan_PrintDio( dev->base_addr );
1293                 TLan_PhyPrint( dev );
1294         }
1295         if ( debug & TLAN_DEBUG_LIST ) {
1296                 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ )
1297                         TLan_PrintList( priv->rxList + i, "RX", i );
1298                 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ )
1299                         TLan_PrintList( priv->txList + i, "TX", i );
1300         }
1301
1302         return ( &( (TLanPrivateInfo *) netdev_priv(dev) )->stats );
1303
1304 } /* TLan_GetStats */
1305
1306
1307
1308
1309         /***************************************************************
1310          *      TLan_SetMulticastList
1311          *
1312          *      Returns:
1313          *              Nothing
1314          *      Parms:
1315          *              dev     The device structure to set the
1316          *                      multicast list for.
1317          *
1318          *      This function sets the TLAN adaptor to various receive
1319          *      modes.  If the IFF_PROMISC flag is set, promiscuous
1320          *      mode is acitviated.  Otherwise, promiscuous mode is
1321          *      turned off.  If the IFF_ALLMULTI flag is set, then
1322          *      the hash table is set to receive all group addresses.
1323          *      Otherwise, the first three multicast addresses are
1324          *      stored in AREG_1-3, and the rest are selected via the
1325          *      hash table, as necessary.
1326          *
1327          **************************************************************/
1328
1329 static void TLan_SetMulticastList( struct net_device *dev )
1330 {
1331         struct dev_mc_list      *dmi = dev->mc_list;
1332         u32                     hash1 = 0;
1333         u32                     hash2 = 0;
1334         int                     i;
1335         u32                     offset;
1336         u8                      tmp;
1337
1338         if ( dev->flags & IFF_PROMISC ) {
1339                 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1340                 TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF );
1341         } else {
1342                 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1343                 TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF );
1344                 if ( dev->flags & IFF_ALLMULTI ) {
1345                         for ( i = 0; i < 3; i++ )
1346                                 TLan_SetMac( dev, i + 1, NULL );
1347                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, 0xFFFFFFFF );
1348                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, 0xFFFFFFFF );
1349                 } else {
1350                         for ( i = 0; i < dev->mc_count; i++ ) {
1351                                 if ( i < 3 ) {
1352                                         TLan_SetMac( dev, i + 1, (char *) &dmi->dmi_addr );
1353                                 } else {
1354                                         offset = TLan_HashFunc( (u8 *) &dmi->dmi_addr );
1355                                         if ( offset < 32 )
1356                                                 hash1 |= ( 1 << offset );
1357                                         else
1358                                                 hash2 |= ( 1 << ( offset - 32 ) );
1359                                 }
1360                                 dmi = dmi->next;
1361                         }
1362                         for ( ; i < 3; i++ )
1363                                 TLan_SetMac( dev, i + 1, NULL );
1364                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, hash1 );
1365                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, hash2 );
1366                 }
1367         }
1368
1369 } /* TLan_SetMulticastList */
1370
1371
1372
1373 /*****************************************************************************
1374 ******************************************************************************
1375
1376         ThunderLAN Driver Interrupt Vectors and Table
1377
1378         Please see Chap. 4, "Interrupt Handling" of the "ThunderLAN
1379         Programmer's Guide" for more informations on handling interrupts
1380         generated by TLAN based adapters.
1381
1382 ******************************************************************************
1383 *****************************************************************************/
1384
1385
1386         /***************************************************************
1387          *      TLan_HandleInvalid
1388          *
1389          *      Returns:
1390          *              0
1391          *      Parms:
1392          *              dev             Device assigned the IRQ that was
1393          *                              raised.
1394          *              host_int        The contents of the HOST_INT
1395          *                              port.
1396          *
1397          *      This function handles invalid interrupts.  This should
1398          *      never happen unless some other adapter is trying to use
1399          *      the IRQ line assigned to the device.
1400          *
1401          **************************************************************/
1402
1403 u32 TLan_HandleInvalid( struct net_device *dev, u16 host_int )
1404 {
1405         /* printk( "TLAN:  Invalid interrupt on %s.\n", dev->name ); */
1406         return 0;
1407
1408 } /* TLan_HandleInvalid */
1409
1410
1411
1412
1413         /***************************************************************
1414          *      TLan_HandleTxEOF
1415          *
1416          *      Returns:
1417          *              1
1418          *      Parms:
1419          *              dev             Device assigned the IRQ that was
1420          *                              raised.
1421          *              host_int        The contents of the HOST_INT
1422          *                              port.
1423          *
1424          *      This function handles Tx EOF interrupts which are raised
1425          *      by the adapter when it has completed sending the
1426          *      contents of a buffer.  If detemines which list/buffer
1427          *      was completed and resets it.  If the buffer was the last
1428          *      in the channel (EOC), then the function checks to see if
1429          *      another buffer is ready to send, and if so, sends a Tx
1430          *      Go command.  Finally, the driver activates/continues the
1431          *      activity LED.
1432          *
1433          **************************************************************/
1434
1435 u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int )
1436 {
1437         TLanPrivateInfo *priv = netdev_priv(dev);
1438         int             eoc = 0;
1439         TLanList        *head_list;
1440         dma_addr_t      head_list_phys;
1441         u32             ack = 0;
1442         u16             tmpCStat;
1443
1444         TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n", priv->txHead, priv->txTail );
1445         head_list = priv->txList + priv->txHead;
1446
1447         while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1448                 ack++;
1449                 if ( ! bbuf ) {
1450                         struct sk_buff *skb = TLan_GetSKB(head_list);
1451                         pci_unmap_single(priv->pciDev, head_list->buffer[0].address, skb->len, PCI_DMA_TODEVICE);
1452                         dev_kfree_skb_any(skb);
1453                         head_list->buffer[8].address = 0;
1454                         head_list->buffer[9].address = 0;
1455                 }
1456
1457                 if ( tmpCStat & TLAN_CSTAT_EOC )
1458                         eoc = 1;
1459
1460                 priv->stats.tx_bytes += head_list->frameSize;
1461
1462                 head_list->cStat = TLAN_CSTAT_UNUSED;
1463                 netif_start_queue(dev);
1464                 CIRC_INC( priv->txHead, TLAN_NUM_TX_LISTS );
1465                 head_list = priv->txList + priv->txHead;
1466         }
1467
1468         if (!ack)
1469                 printk(KERN_INFO "TLAN: Received interrupt for uncompleted TX frame.\n");
1470
1471         if ( eoc ) {
1472                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Handling TX EOC (Head=%d Tail=%d)\n", priv->txHead, priv->txTail );
1473                 head_list = priv->txList + priv->txHead;
1474                 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1475                 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1476                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1477                         ack |= TLAN_HC_GO;
1478                 } else {
1479                         priv->txInProgress = 0;
1480                 }
1481         }
1482
1483         if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1484                 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1485                 if ( priv->timer.function == NULL ) {
1486                          priv->timer.function = &TLan_Timer;
1487                          priv->timer.data = (unsigned long) dev;
1488                          priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1489                          priv->timerSetAt = jiffies;
1490                          priv->timerType = TLAN_TIMER_ACTIVITY;
1491                          add_timer(&priv->timer);
1492                 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1493                         priv->timerSetAt = jiffies;
1494                 }
1495         }
1496
1497         return ack;
1498
1499 } /* TLan_HandleTxEOF */
1500
1501
1502
1503
1504         /***************************************************************
1505          *      TLan_HandleStatOverflow
1506          *
1507          *      Returns:
1508          *              1
1509          *      Parms:
1510          *              dev             Device assigned the IRQ that was
1511          *                              raised.
1512          *              host_int        The contents of the HOST_INT
1513          *                              port.
1514          *
1515          *      This function handles the Statistics Overflow interrupt
1516          *      which means that one or more of the TLAN statistics
1517          *      registers has reached 1/2 capacity and needs to be read.
1518          *
1519          **************************************************************/
1520
1521 u32 TLan_HandleStatOverflow( struct net_device *dev, u16 host_int )
1522 {
1523         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1524
1525         return 1;
1526
1527 } /* TLan_HandleStatOverflow */
1528
1529
1530
1531
1532         /***************************************************************
1533          *      TLan_HandleRxEOF
1534          *
1535          *      Returns:
1536          *              1
1537          *      Parms:
1538          *              dev             Device assigned the IRQ that was
1539          *                              raised.
1540          *              host_int        The contents of the HOST_INT
1541          *                              port.
1542          *
1543          *      This function handles the Rx EOF interrupt which
1544          *      indicates a frame has been received by the adapter from
1545          *      the net and the frame has been transferred to memory.
1546          *      The function determines the bounce buffer the frame has
1547          *      been loaded into, creates a new sk_buff big enough to
1548          *      hold the frame, and sends it to protocol stack.  It
1549          *      then resets the used buffer and appends it to the end
1550          *      of the list.  If the frame was the last in the Rx
1551          *      channel (EOC), the function restarts the receive channel
1552          *      by sending an Rx Go command to the adapter.  Then it
1553          *      activates/continues the activity LED.
1554          *
1555          **************************************************************/
1556
1557 u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
1558 {
1559         TLanPrivateInfo *priv = netdev_priv(dev);
1560         u32             ack = 0;
1561         int             eoc = 0;
1562         u8              *head_buffer;
1563         TLanList        *head_list;
1564         struct sk_buff  *skb;
1565         TLanList        *tail_list;
1566         void            *t;
1567         u32             frameSize;
1568         u16             tmpCStat;
1569         dma_addr_t      head_list_phys;
1570
1571         TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  Handling RX EOF (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail );
1572         head_list = priv->rxList + priv->rxHead;
1573         head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1574
1575         while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1576                 frameSize = head_list->frameSize;
1577                 ack++;
1578                 if (tmpCStat & TLAN_CSTAT_EOC)
1579                         eoc = 1;
1580
1581                 if (bbuf) {
1582                         skb = dev_alloc_skb(frameSize + 7);
1583                         if (skb == NULL)
1584                                 printk(KERN_INFO "TLAN: Couldn't allocate memory for received data.\n");
1585                         else {
1586                                 head_buffer = priv->rxBuffer + (priv->rxHead * TLAN_MAX_FRAME_SIZE);
1587                                 skb_reserve(skb, 2);
1588                                 t = (void *) skb_put(skb, frameSize);
1589
1590                                 priv->stats.rx_bytes += head_list->frameSize;
1591
1592                                 memcpy( t, head_buffer, frameSize );
1593                                 skb->protocol = eth_type_trans( skb, dev );
1594                                 netif_rx( skb );
1595                         }
1596                 } else {
1597                         struct sk_buff *new_skb;
1598
1599                         /*
1600                          *      I changed the algorithm here. What we now do
1601                          *      is allocate the new frame. If this fails we
1602                          *      simply recycle the frame.
1603                          */
1604
1605                         new_skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 );
1606
1607                         if ( new_skb != NULL ) {
1608                                 skb = TLan_GetSKB(head_list);
1609                                 pci_unmap_single(priv->pciDev, head_list->buffer[0].address, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1610                                 skb_trim( skb, frameSize );
1611
1612                                 priv->stats.rx_bytes += frameSize;
1613
1614                                 skb->protocol = eth_type_trans( skb, dev );
1615                                 netif_rx( skb );
1616
1617                                 skb_reserve( new_skb, 2 );
1618                                 t = (void *) skb_put( new_skb, TLAN_MAX_FRAME_SIZE );
1619                                 head_list->buffer[0].address = pci_map_single(priv->pciDev, new_skb->data, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1620                                 head_list->buffer[8].address = (u32) t;
1621                                 TLan_StoreSKB(head_list, new_skb);
1622                         } else
1623                                 printk(KERN_WARNING "TLAN:  Couldn't allocate memory for received data.\n" );
1624                 }
1625
1626                 head_list->forward = 0;
1627                 head_list->cStat = 0;
1628                 tail_list = priv->rxList + priv->rxTail;
1629                 tail_list->forward = head_list_phys;
1630
1631                 CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS );
1632                 CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS );
1633                 head_list = priv->rxList + priv->rxHead;
1634                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1635         }
1636
1637         if (!ack)
1638                 printk(KERN_INFO "TLAN: Received interrupt for uncompleted RX frame.\n");
1639
1640
1641
1642
1643         if ( eoc ) {
1644                 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  Handling RX EOC (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail );
1645                 head_list = priv->rxList + priv->rxHead;
1646                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1647                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1648                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1649                 priv->rxEocCount++;
1650         }
1651
1652         if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1653                 TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1654                 if ( priv->timer.function == NULL )  {
1655                         priv->timer.function = &TLan_Timer;
1656                         priv->timer.data = (unsigned long) dev;
1657                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1658                         priv->timerSetAt = jiffies;
1659                         priv->timerType = TLAN_TIMER_ACTIVITY;
1660                         add_timer(&priv->timer);
1661                 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1662                         priv->timerSetAt = jiffies;
1663                 }
1664         }
1665
1666         dev->last_rx = jiffies;
1667
1668         return ack;
1669
1670 } /* TLan_HandleRxEOF */
1671
1672
1673
1674
1675         /***************************************************************
1676          *      TLan_HandleDummy
1677          *
1678          *      Returns:
1679          *              1
1680          *      Parms:
1681          *              dev             Device assigned the IRQ that was
1682          *                              raised.
1683          *              host_int        The contents of the HOST_INT
1684          *                              port.
1685          *
1686          *      This function handles the Dummy interrupt, which is
1687          *      raised whenever a test interrupt is generated by setting
1688          *      the Req_Int bit of HOST_CMD to 1.
1689          *
1690          **************************************************************/
1691
1692 u32 TLan_HandleDummy( struct net_device *dev, u16 host_int )
1693 {
1694         printk( "TLAN:  Test interrupt on %s.\n", dev->name );
1695         return 1;
1696
1697 } /* TLan_HandleDummy */
1698
1699
1700
1701
1702         /***************************************************************
1703          *      TLan_HandleTxEOC
1704          *
1705          *      Returns:
1706          *              1
1707          *      Parms:
1708          *              dev             Device assigned the IRQ that was
1709          *                              raised.
1710          *              host_int        The contents of the HOST_INT
1711          *                              port.
1712          *
1713          *      This driver is structured to determine EOC occurrences by
1714          *      reading the CSTAT member of the list structure.  Tx EOC
1715          *      interrupts are disabled via the DIO INTDIS register.
1716          *      However, TLAN chips before revision 3.0 didn't have this
1717          *      functionality, so process EOC events if this is the
1718          *      case.
1719          *
1720          **************************************************************/
1721
1722 u32 TLan_HandleTxEOC( struct net_device *dev, u16 host_int )
1723 {
1724         TLanPrivateInfo *priv = netdev_priv(dev);
1725         TLanList                *head_list;
1726         dma_addr_t              head_list_phys;
1727         u32                     ack = 1;
1728
1729         host_int = 0;
1730         if ( priv->tlanRev < 0x30 ) {
1731                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Handling TX EOC (Head=%d Tail=%d) -- IRQ\n", priv->txHead, priv->txTail );
1732                 head_list = priv->txList + priv->txHead;
1733                 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1734                 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1735                         netif_stop_queue(dev);
1736                         outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1737                         ack |= TLAN_HC_GO;
1738                 } else {
1739                         priv->txInProgress = 0;
1740                 }
1741         }
1742
1743         return ack;
1744
1745 } /* TLan_HandleTxEOC */
1746
1747
1748
1749
1750         /***************************************************************
1751          *      TLan_HandleStatusCheck
1752          *
1753          *      Returns:
1754          *              0 if Adapter check, 1 if Network Status check.
1755          *      Parms:
1756          *              dev             Device assigned the IRQ that was
1757          *                              raised.
1758          *              host_int        The contents of the HOST_INT
1759          *                              port.
1760          *
1761          *      This function handles Adapter Check/Network Status
1762          *      interrupts generated by the adapter.  It checks the
1763          *      vector in the HOST_INT register to determine if it is
1764          *      an Adapter Check interrupt.  If so, it resets the
1765          *      adapter.  Otherwise it clears the status registers
1766          *      and services the PHY.
1767          *
1768          **************************************************************/
1769
1770 u32 TLan_HandleStatusCheck( struct net_device *dev, u16 host_int )
1771 {
1772         TLanPrivateInfo *priv = netdev_priv(dev);
1773         u32             ack;
1774         u32             error;
1775         u8              net_sts;
1776         u32             phy;
1777         u16             tlphy_ctl;
1778         u16             tlphy_sts;
1779
1780         ack = 1;
1781         if ( host_int & TLAN_HI_IV_MASK ) {
1782                 netif_stop_queue( dev );
1783                 error = inl( dev->base_addr + TLAN_CH_PARM );
1784                 printk( "TLAN:  %s: Adaptor Error = 0x%x\n", dev->name, error );
1785                 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1786                 outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1787
1788                 schedule_work(&priv->tlan_tqueue);
1789
1790                 netif_wake_queue(dev);
1791                 ack = 0;
1792         } else {
1793                 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name );
1794                 phy = priv->phy[priv->phyNum];
1795
1796                 net_sts = TLan_DioRead8( dev->base_addr, TLAN_NET_STS );
1797                 if ( net_sts ) {
1798                         TLan_DioWrite8( dev->base_addr, TLAN_NET_STS, net_sts );
1799                         TLAN_DBG( TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n", dev->name, (unsigned) net_sts );
1800                 }
1801                 if ( ( net_sts & TLAN_NET_STS_MIRQ ) &&  ( priv->phyNum == 0 ) ) {
1802                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_STS, &tlphy_sts );
1803                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
1804                         if ( ! ( tlphy_sts & TLAN_TS_POLOK ) && ! ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1805                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1806                                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1807                         } else if ( ( tlphy_sts & TLAN_TS_POLOK ) && ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1808                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1809                                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1810                         }
1811
1812                         if (debug) {
1813                                 TLan_PhyPrint( dev );
1814                         }
1815                 }
1816         }
1817
1818         return ack;
1819
1820 } /* TLan_HandleStatusCheck */
1821
1822
1823
1824
1825         /***************************************************************
1826          *      TLan_HandleRxEOC
1827          *
1828          *      Returns:
1829          *              1
1830          *      Parms:
1831          *              dev             Device assigned the IRQ that was
1832          *                              raised.
1833          *              host_int        The contents of the HOST_INT
1834          *                              port.
1835          *
1836          *      This driver is structured to determine EOC occurrences by
1837          *      reading the CSTAT member of the list structure.  Rx EOC
1838          *      interrupts are disabled via the DIO INTDIS register.
1839          *      However, TLAN chips before revision 3.0 didn't have this
1840          *      CSTAT member or a INTDIS register, so if this chip is
1841          *      pre-3.0, process EOC interrupts normally.
1842          *
1843          **************************************************************/
1844
1845 u32 TLan_HandleRxEOC( struct net_device *dev, u16 host_int )
1846 {
1847         TLanPrivateInfo *priv = netdev_priv(dev);
1848         dma_addr_t      head_list_phys;
1849         u32             ack = 1;
1850
1851         if (  priv->tlanRev < 0x30 ) {
1852                 TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  Handling RX EOC (Head=%d Tail=%d) -- IRQ\n", priv->rxHead, priv->rxTail );
1853                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1854                 outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1855                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1856                 priv->rxEocCount++;
1857         }
1858
1859         return ack;
1860
1861 } /* TLan_HandleRxEOC */
1862
1863
1864
1865
1866 /*****************************************************************************
1867 ******************************************************************************
1868
1869         ThunderLAN Driver Timer Function
1870
1871 ******************************************************************************
1872 *****************************************************************************/
1873
1874
1875         /***************************************************************
1876          *      TLan_Timer
1877          *
1878          *      Returns:
1879          *              Nothing
1880          *      Parms:
1881          *              data    A value given to add timer when
1882          *                      add_timer was called.
1883          *
1884          *      This function handles timed functionality for the
1885          *      TLAN driver.  The two current timer uses are for
1886          *      delaying for autonegotionation and driving the ACT LED.
1887          *      -       Autonegotiation requires being allowed about
1888          *              2 1/2 seconds before attempting to transmit a
1889          *              packet.  It would be a very bad thing to hang
1890          *              the kernel this long, so the driver doesn't
1891          *              allow transmission 'til after this time, for
1892          *              certain PHYs.  It would be much nicer if all
1893          *              PHYs were interrupt-capable like the internal
1894          *              PHY.
1895          *      -       The ACT LED, which shows adapter activity, is
1896          *              driven by the driver, and so must be left on
1897          *              for a short period to power up the LED so it
1898          *              can be seen.  This delay can be changed by
1899          *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1900          *              if desired.  100 ms  produces a slightly
1901          *              sluggish response.
1902          *
1903          **************************************************************/
1904
1905 void TLan_Timer( unsigned long data )
1906 {
1907         struct net_device       *dev = (struct net_device *) data;
1908         TLanPrivateInfo *priv = netdev_priv(dev);
1909         u32             elapsed;
1910         unsigned long   flags = 0;
1911
1912         priv->timer.function = NULL;
1913
1914         switch ( priv->timerType ) {
1915 #ifdef MONITOR
1916                 case TLAN_TIMER_LINK_BEAT:
1917                         TLan_PhyMonitor( dev );
1918                         break;
1919 #endif
1920                 case TLAN_TIMER_PHY_PDOWN:
1921                         TLan_PhyPowerDown( dev );
1922                         break;
1923                 case TLAN_TIMER_PHY_PUP:
1924                         TLan_PhyPowerUp( dev );
1925                         break;
1926                 case TLAN_TIMER_PHY_RESET:
1927                         TLan_PhyReset( dev );
1928                         break;
1929                 case TLAN_TIMER_PHY_START_LINK:
1930                         TLan_PhyStartLink( dev );
1931                         break;
1932                 case TLAN_TIMER_PHY_FINISH_AN:
1933                         TLan_PhyFinishAutoNeg( dev );
1934                         break;
1935                 case TLAN_TIMER_FINISH_RESET:
1936                         TLan_FinishReset( dev );
1937                         break;
1938                 case TLAN_TIMER_ACTIVITY:
1939                         spin_lock_irqsave(&priv->lock, flags);
1940                         if ( priv->timer.function == NULL ) {
1941                                 elapsed = jiffies - priv->timerSetAt;
1942                                 if ( elapsed >= TLAN_TIMER_ACT_DELAY ) {
1943                                         TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
1944                                 } else  {
1945                                         priv->timer.function = &TLan_Timer;
1946                                         priv->timer.expires = priv->timerSetAt + TLAN_TIMER_ACT_DELAY;
1947                                         spin_unlock_irqrestore(&priv->lock, flags);
1948                                         add_timer( &priv->timer );
1949                                         break;
1950                                 }
1951                         }
1952                         spin_unlock_irqrestore(&priv->lock, flags);
1953                         break;
1954                 default:
1955                         break;
1956         }
1957
1958 } /* TLan_Timer */
1959
1960
1961
1962
1963 /*****************************************************************************
1964 ******************************************************************************
1965
1966         ThunderLAN Driver Adapter Related Routines
1967
1968 ******************************************************************************
1969 *****************************************************************************/
1970
1971
1972         /***************************************************************
1973          *      TLan_ResetLists
1974          *
1975          *      Returns:
1976          *              Nothing
1977          *      Parms:
1978          *              dev     The device structure with the list
1979          *                      stuctures to be reset.
1980          *
1981          *      This routine sets the variables associated with managing
1982          *      the TLAN lists to their initial values.
1983          *
1984          **************************************************************/
1985
1986 void TLan_ResetLists( struct net_device *dev )
1987 {
1988         TLanPrivateInfo *priv = netdev_priv(dev);
1989         int             i;
1990         TLanList        *list;
1991         dma_addr_t      list_phys;
1992         struct sk_buff  *skb;
1993         void            *t = NULL;
1994
1995         priv->txHead = 0;
1996         priv->txTail = 0;
1997         for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
1998                 list = priv->txList + i;
1999                 list->cStat = TLAN_CSTAT_UNUSED;
2000                 if ( bbuf ) {
2001                         list->buffer[0].address = priv->txBufferDMA + ( i * TLAN_MAX_FRAME_SIZE );
2002                 } else {
2003                         list->buffer[0].address = 0;
2004                 }
2005                 list->buffer[2].count = 0;
2006                 list->buffer[2].address = 0;
2007                 list->buffer[8].address = 0;
2008                 list->buffer[9].address = 0;
2009         }
2010
2011         priv->rxHead = 0;
2012         priv->rxTail = TLAN_NUM_RX_LISTS - 1;
2013         for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
2014                 list = priv->rxList + i;
2015                 list_phys = priv->rxListDMA + sizeof(TLanList) * i;
2016                 list->cStat = TLAN_CSTAT_READY;
2017                 list->frameSize = TLAN_MAX_FRAME_SIZE;
2018                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
2019                 if ( bbuf ) {
2020                         list->buffer[0].address = priv->rxBufferDMA + ( i * TLAN_MAX_FRAME_SIZE );
2021                 } else {
2022                         skb = dev_alloc_skb( TLAN_MAX_FRAME_SIZE + 7 );
2023                         if ( skb == NULL ) {
2024                                 printk( "TLAN:  Couldn't allocate memory for received data.\n" );
2025                                 /* If this ever happened it would be a problem */
2026                         } else {
2027                                 skb->dev = dev;
2028                                 skb_reserve( skb, 2 );
2029                                 t = (void *) skb_put( skb, TLAN_MAX_FRAME_SIZE );
2030                         }
2031                         list->buffer[0].address = pci_map_single(priv->pciDev, t, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
2032                         list->buffer[8].address = (u32) t;
2033                         TLan_StoreSKB(list, skb);
2034                 }
2035                 list->buffer[1].count = 0;
2036                 list->buffer[1].address = 0;
2037                 if ( i < TLAN_NUM_RX_LISTS - 1 )
2038                         list->forward = list_phys + sizeof(TLanList);
2039                 else
2040                         list->forward = 0;
2041         }
2042
2043 } /* TLan_ResetLists */
2044
2045
2046 void TLan_FreeLists( struct net_device *dev )
2047 {
2048         TLanPrivateInfo *priv = netdev_priv(dev);
2049         int             i;
2050         TLanList        *list;
2051         struct sk_buff  *skb;
2052
2053         if ( ! bbuf ) {
2054                 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
2055                         list = priv->txList + i;
2056                         skb = TLan_GetSKB(list);
2057                         if ( skb ) {
2058                                 pci_unmap_single(priv->pciDev, list->buffer[0].address, skb->len, PCI_DMA_TODEVICE);
2059                                 dev_kfree_skb_any( skb );
2060                                 list->buffer[8].address = 0;
2061                                 list->buffer[9].address = 0;
2062                         }
2063                 }
2064
2065                 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
2066                         list = priv->rxList + i;
2067                         skb = TLan_GetSKB(list);
2068                         if ( skb ) {
2069                                 pci_unmap_single(priv->pciDev, list->buffer[0].address, TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
2070                                 dev_kfree_skb_any( skb );
2071                                 list->buffer[8].address = 0;
2072                                 list->buffer[9].address = 0;
2073                         }
2074                 }
2075         }
2076 } /* TLan_FreeLists */
2077
2078
2079
2080
2081         /***************************************************************
2082          *      TLan_PrintDio
2083          *
2084          *      Returns:
2085          *              Nothing
2086          *      Parms:
2087          *              io_base         Base IO port of the device of
2088          *                              which to print DIO registers.
2089          *
2090          *      This function prints out all the internal (DIO)
2091          *      registers of a TLAN chip.
2092          *
2093          **************************************************************/
2094
2095 void TLan_PrintDio( u16 io_base )
2096 {
2097         u32 data0, data1;
2098         int     i;
2099
2100         printk( "TLAN:   Contents of internal registers for io base 0x%04hx.\n", io_base );
2101         printk( "TLAN:      Off.  +0         +4\n" );
2102         for ( i = 0; i < 0x4C; i+= 8 ) {
2103                 data0 = TLan_DioRead32( io_base, i );
2104                 data1 = TLan_DioRead32( io_base, i + 0x4 );
2105                 printk( "TLAN:      0x%02x  0x%08x 0x%08x\n", i, data0, data1 );
2106         }
2107
2108 } /* TLan_PrintDio */
2109
2110
2111
2112
2113         /***************************************************************
2114          *      TLan_PrintList
2115          *
2116          *      Returns:
2117          *              Nothing
2118          *      Parms:
2119          *              list    A pointer to the TLanList structure to
2120          *                      be printed.
2121          *              type    A string to designate type of list,
2122          *                      "Rx" or "Tx".
2123          *              num     The index of the list.
2124          *
2125          *      This function prints out the contents of the list
2126          *      pointed to by the list parameter.
2127          *
2128          **************************************************************/
2129
2130 void TLan_PrintList( TLanList *list, char *type, int num)
2131 {
2132         int i;
2133
2134         printk( "TLAN:   %s List %d at 0x%08x\n", type, num, (u32) list );
2135         printk( "TLAN:      Forward    = 0x%08x\n",  list->forward );
2136         printk( "TLAN:      CSTAT      = 0x%04hx\n", list->cStat );
2137         printk( "TLAN:      Frame Size = 0x%04hx\n", list->frameSize );
2138         /* for ( i = 0; i < 10; i++ ) { */
2139         for ( i = 0; i < 2; i++ ) {
2140                 printk( "TLAN:      Buffer[%d].count, addr = 0x%08x, 0x%08x\n", i, list->buffer[i].count, list->buffer[i].address );
2141         }
2142
2143 } /* TLan_PrintList */
2144
2145
2146
2147
2148         /***************************************************************
2149          *      TLan_ReadAndClearStats
2150          *
2151          *      Returns:
2152          *              Nothing
2153          *      Parms:
2154          *              dev     Pointer to device structure of adapter
2155          *                      to which to read stats.
2156          *              record  Flag indicating whether to add
2157          *
2158          *      This functions reads all the internal status registers
2159          *      of the TLAN chip, which clears them as a side effect.
2160          *      It then either adds the values to the device's status
2161          *      struct, or discards them, depending on whether record
2162          *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2163          *
2164          **************************************************************/
2165
2166 void TLan_ReadAndClearStats( struct net_device *dev, int record )
2167 {
2168         TLanPrivateInfo *priv = netdev_priv(dev);
2169         u32             tx_good, tx_under;
2170         u32             rx_good, rx_over;
2171         u32             def_tx, crc, code;
2172         u32             multi_col, single_col;
2173         u32             excess_col, late_col, loss;
2174
2175         outw( TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2176         tx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
2177         tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2178         tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2179         tx_under = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2180
2181         outw( TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2182         rx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
2183         rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2184         rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2185         rx_over  = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2186
2187         outw( TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR );
2188         def_tx  = inb( dev->base_addr + TLAN_DIO_DATA );
2189         def_tx += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2190         crc     = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2191         code    = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2192
2193         outw( TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2194         multi_col   = inb( dev->base_addr + TLAN_DIO_DATA );
2195         multi_col  += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2196         single_col  = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2197         single_col += inb( dev->base_addr + TLAN_DIO_DATA + 3 ) << 8;
2198
2199         outw( TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2200         excess_col = inb( dev->base_addr + TLAN_DIO_DATA );
2201         late_col   = inb( dev->base_addr + TLAN_DIO_DATA + 1 );
2202         loss       = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2203
2204         if ( record ) {
2205                 priv->stats.rx_packets += rx_good;
2206                 priv->stats.rx_errors  += rx_over + crc + code;
2207                 priv->stats.tx_packets += tx_good;
2208                 priv->stats.tx_errors  += tx_under + loss;
2209                 priv->stats.collisions += multi_col + single_col + excess_col + late_col;
2210
2211                 priv->stats.rx_over_errors    += rx_over;
2212                 priv->stats.rx_crc_errors     += crc;
2213                 priv->stats.rx_frame_errors   += code;
2214
2215                 priv->stats.tx_aborted_errors += tx_under;
2216                 priv->stats.tx_carrier_errors += loss;
2217         }
2218
2219 } /* TLan_ReadAndClearStats */
2220
2221
2222
2223
2224         /***************************************************************
2225          *      TLan_Reset
2226          *
2227          *      Returns:
2228          *              0
2229          *      Parms:
2230          *              dev     Pointer to device structure of adapter
2231          *                      to be reset.
2232          *
2233          *      This function resets the adapter and it's physical
2234          *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2235          *      Programmer's Guide" for details.  The routine tries to
2236          *      implement what is detailed there, though adjustments
2237          *      have been made.
2238          *
2239          **************************************************************/
2240
2241 void
2242 TLan_ResetAdapter( struct net_device *dev )
2243 {
2244         TLanPrivateInfo *priv = netdev_priv(dev);
2245         int             i;
2246         u32             addr;
2247         u32             data;
2248         u8              data8;
2249
2250         priv->tlanFullDuplex = FALSE;
2251         priv->phyOnline=0;
2252         netif_carrier_off(dev);
2253
2254 /*  1.  Assert reset bit. */
2255
2256         data = inl(dev->base_addr + TLAN_HOST_CMD);
2257         data |= TLAN_HC_AD_RST;
2258         outl(data, dev->base_addr + TLAN_HOST_CMD);
2259
2260         udelay(1000);
2261
2262 /*  2.  Turn off interrupts. ( Probably isn't necessary ) */
2263
2264         data = inl(dev->base_addr + TLAN_HOST_CMD);
2265         data |= TLAN_HC_INT_OFF;
2266         outl(data, dev->base_addr + TLAN_HOST_CMD);
2267
2268 /*  3.  Clear AREGs and HASHs. */
2269
2270         for ( i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4 ) {
2271                 TLan_DioWrite32( dev->base_addr, (u16) i, 0 );
2272         }
2273
2274 /*  4.  Setup NetConfig register. */
2275
2276         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2277         TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2278
2279 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2280
2281         outl( TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD );
2282         outl( TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD );
2283
2284 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2285
2286         outw( TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR );
2287         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2288         TLan_SetBit( TLAN_NET_SIO_NMRST, addr );
2289
2290 /*  7.  Setup the remaining registers. */
2291
2292         if ( priv->tlanRev >= 0x30 ) {
2293                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2294                 TLan_DioWrite8( dev->base_addr, TLAN_INT_DIS, data8 );
2295         }
2296         TLan_PhyDetect( dev );
2297         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2298
2299         if ( priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY ) {
2300                 data |= TLAN_NET_CFG_BIT;
2301                 if ( priv->aui == 1 ) {
2302                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x0a );
2303                 } else if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2304                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x00 );
2305                         priv->tlanFullDuplex = TRUE;
2306                 } else {
2307                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x08 );
2308                 }
2309         }
2310
2311         if ( priv->phyNum == 0 ) {
2312                 data |= TLAN_NET_CFG_PHY_EN;
2313         }
2314         TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2315
2316         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2317                 TLan_FinishReset( dev );
2318         } else {
2319                 TLan_PhyPowerDown( dev );
2320         }
2321
2322 } /* TLan_ResetAdapter */
2323
2324
2325
2326
2327 void
2328 TLan_FinishReset( struct net_device *dev )
2329 {
2330         TLanPrivateInfo *priv = netdev_priv(dev);
2331         u8              data;
2332         u32             phy;
2333         u8              sio;
2334         u16             status;
2335         u16             partner;
2336         u16             tlphy_ctl;
2337         u16             tlphy_par;
2338         u16             tlphy_id1, tlphy_id2;
2339         int             i;
2340
2341         phy = priv->phy[priv->phyNum];
2342
2343         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2344         if ( priv->tlanFullDuplex ) {
2345                 data |= TLAN_NET_CMD_DUPLEX;
2346         }
2347         TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, data );
2348         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2349         if ( priv->phyNum == 0 ) {
2350                 data |= TLAN_NET_MASK_MASK7;
2351         }
2352         TLan_DioWrite8( dev->base_addr, TLAN_NET_MASK, data );
2353         TLan_DioWrite16( dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7 );
2354         TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &tlphy_id1 );
2355         TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &tlphy_id2 );
2356
2357         if ( ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) || ( priv->aui ) ) {
2358                 status = MII_GS_LINK;
2359                 printk( "TLAN:  %s: Link forced.\n", dev->name );
2360         } else {
2361                 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2362                 udelay( 1000 );
2363                 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2364                 if ( (status & MII_GS_LINK) &&   /* We only support link info on Nat.Sem. PHY's */
2365                         (tlphy_id1 == NAT_SEM_ID1) &&
2366                         (tlphy_id2 == NAT_SEM_ID2) ) {
2367                         TLan_MiiReadReg( dev, phy, MII_AN_LPA, &partner );
2368                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_PAR, &tlphy_par );
2369
2370                         printk( "TLAN: %s: Link active with ", dev->name );
2371                         if (!(tlphy_par & TLAN_PHY_AN_EN_STAT)) {
2372                                  printk( "forced 10%sMbps %s-Duplex\n",
2373                                                 tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2374                                                 tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2375                         } else {
2376                                 printk( "AutoNegotiation enabled, at 10%sMbps %s-Duplex\n",
2377                                                 tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2378                                                 tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2379                                 printk("TLAN: Partner capability: ");
2380                                         for (i = 5; i <= 10; i++)
2381                                                 if (partner & (1<<i))
2382                                                         printk("%s",media[i-5]);
2383                                 printk("\n");
2384                         }
2385
2386                         TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2387 #ifdef MONITOR
2388                         /* We have link beat..for now anyway */
2389                         priv->link = 1;
2390                         /*Enabling link beat monitoring */
2391                         TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_LINK_BEAT );
2392 #endif
2393                 } else if (status & MII_GS_LINK)  {
2394                         printk( "TLAN: %s: Link active\n", dev->name );
2395                         TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2396                 }
2397         }
2398
2399         if ( priv->phyNum == 0 ) {
2400                 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
2401                 tlphy_ctl |= TLAN_TC_INTEN;
2402                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl );
2403                 sio = TLan_DioRead8( dev->base_addr, TLAN_NET_SIO );
2404                 sio |= TLAN_NET_SIO_MINTEN;
2405                 TLan_DioWrite8( dev->base_addr, TLAN_NET_SIO, sio );
2406         }
2407
2408         if ( status & MII_GS_LINK ) {
2409                 TLan_SetMac( dev, 0, dev->dev_addr );
2410                 priv->phyOnline = 1;
2411                 outb( ( TLAN_HC_INT_ON >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2412                 if ( debug >= 1 && debug != TLAN_DEBUG_PROBE ) {
2413                         outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2414                 }
2415                 outl( priv->rxListDMA, dev->base_addr + TLAN_CH_PARM );
2416                 outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
2417                 netif_carrier_on(dev);
2418         } else {
2419                 printk( "TLAN: %s: Link inactive, will retry in 10 secs...\n", dev->name );
2420                 TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_FINISH_RESET );
2421                 return;
2422         }
2423         TLan_SetMulticastList(dev);
2424
2425 } /* TLan_FinishReset */
2426
2427
2428
2429
2430         /***************************************************************
2431          *      TLan_SetMac
2432          *
2433          *      Returns:
2434          *              Nothing
2435          *      Parms:
2436          *              dev     Pointer to device structure of adapter
2437          *                      on which to change the AREG.
2438          *              areg    The AREG to set the address in (0 - 3).
2439          *              mac     A pointer to an array of chars.  Each
2440          *                      element stores one byte of the address.
2441          *                      IE, it isn't in ascii.
2442          *
2443          *      This function transfers a MAC address to one of the
2444          *      TLAN AREGs (address registers).  The TLAN chip locks
2445          *      the register on writing to offset 0 and unlocks the
2446          *      register after writing to offset 5.  If NULL is passed
2447          *      in mac, then the AREG is filled with 0's.
2448          *
2449          **************************************************************/
2450
2451 void TLan_SetMac( struct net_device *dev, int areg, char *mac )
2452 {
2453         int i;
2454
2455         areg *= 6;
2456
2457         if ( mac != NULL ) {
2458                 for ( i = 0; i < 6; i++ )
2459                         TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, mac[i] );
2460         } else {
2461                 for ( i = 0; i < 6; i++ )
2462                         TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, 0 );
2463         }
2464
2465 } /* TLan_SetMac */
2466
2467
2468
2469
2470 /*****************************************************************************
2471 ******************************************************************************
2472
2473         ThunderLAN Driver PHY Layer Routines
2474
2475 ******************************************************************************
2476 *****************************************************************************/
2477
2478
2479
2480         /*********************************************************************
2481          *      TLan_PhyPrint
2482          *
2483          *      Returns:
2484          *              Nothing
2485          *      Parms:
2486          *              dev     A pointer to the device structure of the
2487          *                      TLAN device having the PHYs to be detailed.
2488          *
2489          *      This function prints the registers a PHY (aka transceiver).
2490          *
2491          ********************************************************************/
2492
2493 void TLan_PhyPrint( struct net_device *dev )
2494 {
2495         TLanPrivateInfo *priv = netdev_priv(dev);
2496         u16 i, data0, data1, data2, data3, phy;
2497
2498         phy = priv->phy[priv->phyNum];
2499
2500         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2501                 printk( "TLAN:   Device %s, Unmanaged PHY.\n", dev->name );
2502         } else if ( phy <= TLAN_PHY_MAX_ADDR ) {
2503                 printk( "TLAN:   Device %s, PHY 0x%02x.\n", dev->name, phy );
2504                 printk( "TLAN:      Off.  +0     +1     +2     +3 \n" );
2505                 for ( i = 0; i < 0x20; i+= 4 ) {
2506                         printk( "TLAN:      0x%02x", i );
2507                         TLan_MiiReadReg( dev, phy, i, &data0 );
2508                         printk( " 0x%04hx", data0 );
2509                         TLan_MiiReadReg( dev, phy, i + 1, &data1 );
2510                         printk( " 0x%04hx", data1 );
2511                         TLan_MiiReadReg( dev, phy, i + 2, &data2 );
2512                         printk( " 0x%04hx", data2 );
2513                         TLan_MiiReadReg( dev, phy, i + 3, &data3 );
2514                         printk( " 0x%04hx\n", data3 );
2515                 }
2516         } else {
2517                 printk( "TLAN:   Device %s, Invalid PHY.\n", dev->name );
2518         }
2519
2520 } /* TLan_PhyPrint */
2521
2522
2523
2524
2525         /*********************************************************************
2526          *      TLan_PhyDetect
2527          *
2528          *      Returns:
2529          *              Nothing
2530          *      Parms:
2531          *              dev     A pointer to the device structure of the adapter
2532          *                      for which the PHY needs determined.
2533          *
2534          *      So far I've found that adapters which have external PHYs
2535          *      may also use the internal PHY for part of the functionality.
2536          *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2537          *      chip has an internal PHY, and then finds the first external
2538          *      PHY (starting from address 0) if it exists).
2539          *
2540          ********************************************************************/
2541
2542 void TLan_PhyDetect( struct net_device *dev )
2543 {
2544         TLanPrivateInfo *priv = netdev_priv(dev);
2545         u16             control;
2546         u16             hi;
2547         u16             lo;
2548         u32             phy;
2549
2550         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2551                 priv->phyNum = 0xFFFF;
2552                 return;
2553         }
2554
2555         TLan_MiiReadReg( dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi );
2556
2557         if ( hi != 0xFFFF ) {
2558                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2559         } else {
2560                 priv->phy[0] = TLAN_PHY_NONE;
2561         }
2562
2563         priv->phy[1] = TLAN_PHY_NONE;
2564         for ( phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++ ) {
2565                 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &control );
2566                 TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &hi );
2567                 TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &lo );
2568                 if ( ( control != 0xFFFF ) || ( hi != 0xFFFF ) || ( lo != 0xFFFF ) ) {
2569                         TLAN_DBG( TLAN_DEBUG_GNRL, "PHY found at %02x %04x %04x %04x\n", phy, control, hi, lo );
2570                         if ( ( priv->phy[1] == TLAN_PHY_NONE ) && ( phy != TLAN_PHY_MAX_ADDR ) ) {
2571                                 priv->phy[1] = phy;
2572                         }
2573                 }
2574         }
2575
2576         if ( priv->phy[1] != TLAN_PHY_NONE ) {
2577                 priv->phyNum = 1;
2578         } else if ( priv->phy[0] != TLAN_PHY_NONE ) {
2579                 priv->phyNum = 0;
2580         } else {
2581                 printk( "TLAN:  Cannot initialize device, no PHY was found!\n" );
2582         }
2583
2584 } /* TLan_PhyDetect */
2585
2586
2587
2588
2589 void TLan_PhyPowerDown( struct net_device *dev )
2590 {
2591         TLanPrivateInfo *priv = netdev_priv(dev);
2592         u16             value;
2593
2594         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name );
2595         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2596         TLan_MiiSync( dev->base_addr );
2597         TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2598         if ( ( priv->phyNum == 0 ) && ( priv->phy[1] != TLAN_PHY_NONE ) && ( ! ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) ) ) {
2599                 TLan_MiiSync( dev->base_addr );
2600                 TLan_MiiWriteReg( dev, priv->phy[1], MII_GEN_CTL, value );
2601         }
2602
2603         /* Wait for 50 ms and powerup
2604          * This is abitrary.  It is intended to make sure the
2605          * transceiver settles.
2606          */
2607         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_PUP );
2608
2609 } /* TLan_PhyPowerDown */
2610
2611
2612
2613
2614 void TLan_PhyPowerUp( struct net_device *dev )
2615 {
2616         TLanPrivateInfo *priv = netdev_priv(dev);
2617         u16             value;
2618
2619         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name );
2620         TLan_MiiSync( dev->base_addr );
2621         value = MII_GC_LOOPBK;
2622         TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2623         TLan_MiiSync(dev->base_addr);
2624         /* Wait for 500 ms and reset the
2625          * transceiver.  The TLAN docs say both 50 ms and
2626          * 500 ms, so do the longer, just in case.
2627          */
2628         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_RESET );
2629
2630 } /* TLan_PhyPowerUp */
2631
2632
2633
2634
2635 void TLan_PhyReset( struct net_device *dev )
2636 {
2637         TLanPrivateInfo *priv = netdev_priv(dev);
2638         u16             phy;
2639         u16             value;
2640
2641         phy = priv->phy[priv->phyNum];
2642
2643         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name );
2644         TLan_MiiSync( dev->base_addr );
2645         value = MII_GC_LOOPBK | MII_GC_RESET;
2646         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, value );
2647         TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2648         while ( value & MII_GC_RESET ) {
2649                 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2650         }
2651
2652         /* Wait for 500 ms and initialize.
2653          * I don't remember why I wait this long.
2654          * I've changed this to 50ms, as it seems long enough.
2655          */
2656         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_START_LINK );
2657
2658 } /* TLan_PhyReset */
2659
2660
2661
2662
2663 void TLan_PhyStartLink( struct net_device *dev )
2664 {
2665         TLanPrivateInfo *priv = netdev_priv(dev);
2666         u16             ability;
2667         u16             control;
2668         u16             data;
2669         u16             phy;
2670         u16             status;
2671         u16             tctl;
2672
2673         phy = priv->phy[priv->phyNum];
2674         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name );
2675         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2676         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &ability );
2677
2678         if ( ( status & MII_GS_AUTONEG ) &&
2679              ( ! priv->aui ) ) {
2680                 ability = status >> 11;
2681                 if ( priv->speed  == TLAN_SPEED_10 &&
2682                      priv->duplex == TLAN_DUPLEX_HALF) {
2683                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0000);
2684                 } else if ( priv->speed == TLAN_SPEED_10 &&
2685                             priv->duplex == TLAN_DUPLEX_FULL) {
2686                         priv->tlanFullDuplex = TRUE;
2687                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0100);
2688                 } else if ( priv->speed == TLAN_SPEED_100 &&
2689                             priv->duplex == TLAN_DUPLEX_HALF) {
2690                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2000);
2691                 } else if ( priv->speed == TLAN_SPEED_100 &&
2692                             priv->duplex == TLAN_DUPLEX_FULL) {
2693                         priv->tlanFullDuplex = TRUE;
2694                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2100);
2695                 } else {
2696
2697                         /* Set Auto-Neg advertisement */
2698                         TLan_MiiWriteReg( dev, phy, MII_AN_ADV, (ability << 5) | 1);
2699                         /* Enablee Auto-Neg */
2700                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1000 );
2701                         /* Restart Auto-Neg */
2702                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1200 );
2703                         /* Wait for 4 sec for autonegotiation
2704                         * to complete.  The max spec time is less than this
2705                         * but the card need additional time to start AN.
2706                         * .5 sec should be plenty extra.
2707                         */
2708                         printk( "TLAN: %s: Starting autonegotiation.\n", dev->name );
2709                         TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN );
2710                         return;
2711                 }
2712
2713         }
2714
2715         if ( ( priv->aui ) && ( priv->phyNum != 0 ) ) {
2716                 priv->phyNum = 0;
2717                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2718                 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2719                 TLan_SetTimer( dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2720                 return;
2721         }  else if ( priv->phyNum == 0 ) {
2722                 control = 0;
2723                 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tctl );
2724                 if ( priv->aui ) {
2725                         tctl |= TLAN_TC_AUISEL;
2726                 } else {
2727                         tctl &= ~TLAN_TC_AUISEL;
2728                         if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2729                                 control |= MII_GC_DUPLEX;
2730                                 priv->tlanFullDuplex = TRUE;
2731                         }
2732                         if ( priv->speed == TLAN_SPEED_100 ) {
2733                                 control |= MII_GC_SPEEDSEL;
2734                         }
2735                 }
2736                 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, control );
2737                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tctl );
2738         }
2739
2740         /* Wait for 2 sec to give the transceiver time
2741          * to establish link.
2742          */
2743         TLan_SetTimer( dev, (4*HZ), TLAN_TIMER_FINISH_RESET );
2744
2745 } /* TLan_PhyStartLink */
2746
2747
2748
2749
2750 void TLan_PhyFinishAutoNeg( struct net_device *dev )
2751 {
2752         TLanPrivateInfo *priv = netdev_priv(dev);
2753         u16             an_adv;
2754         u16             an_lpa;
2755         u16             data;
2756         u16             mode;
2757         u16             phy;
2758         u16             status;
2759
2760         phy = priv->phy[priv->phyNum];
2761
2762         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2763         udelay( 1000 );
2764         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2765
2766         if ( ! ( status & MII_GS_AUTOCMPLT ) ) {
2767                 /* Wait for 8 sec to give the process
2768                  * more time.  Perhaps we should fail after a while.
2769                  */
2770                  if (!priv->neg_be_verbose++) {
2771                          printk(KERN_INFO "TLAN:  Giving autonegotiation more time.\n");
2772                          printk(KERN_INFO "TLAN:  Please check that your adapter has\n");
2773                          printk(KERN_INFO "TLAN:  been properly connected to a HUB or Switch.\n");
2774                          printk(KERN_INFO "TLAN:  Trying to establish link in the background...\n");
2775                  }
2776                 TLan_SetTimer( dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN );
2777                 return;
2778         }
2779
2780         printk( "TLAN: %s: Autonegotiation complete.\n", dev->name );
2781         TLan_MiiReadReg( dev, phy, MII_AN_ADV, &an_adv );
2782         TLan_MiiReadReg( dev, phy, MII_AN_LPA, &an_lpa );
2783         mode = an_adv & an_lpa & 0x03E0;
2784         if ( mode & 0x0100 ) {
2785                 priv->tlanFullDuplex = TRUE;
2786         } else if ( ! ( mode & 0x0080 ) && ( mode & 0x0040 ) ) {
2787                 priv->tlanFullDuplex = TRUE;
2788         }
2789
2790         if ( ( ! ( mode & 0x0180 ) ) && ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) && ( priv->phyNum != 0 ) ) {
2791                 priv->phyNum = 0;
2792                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2793                 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2794                 TLan_SetTimer( dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2795                 return;
2796         }
2797
2798         if ( priv->phyNum == 0 ) {
2799                 if ( ( priv->duplex == TLAN_DUPLEX_FULL ) || ( an_adv & an_lpa & 0x0040 ) ) {
2800                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB | MII_GC_DUPLEX );
2801                         printk( "TLAN:  Starting internal PHY with FULL-DUPLEX\n" );
2802                 } else {
2803                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB );
2804                         printk( "TLAN:  Starting internal PHY with HALF-DUPLEX\n" );
2805                 }
2806         }
2807
2808         /* Wait for 100 ms.  No reason in partiticular.
2809          */
2810         TLan_SetTimer( dev, (HZ/10), TLAN_TIMER_FINISH_RESET );
2811
2812 } /* TLan_PhyFinishAutoNeg */
2813
2814 #ifdef MONITOR
2815
2816         /*********************************************************************
2817         *
2818         *      TLan_phyMonitor
2819         *
2820         *      Returns:
2821         *              None
2822         *
2823         *      Params:
2824         *              dev             The device structure of this device.
2825         *
2826         *
2827         *      This function monitors PHY condition by reading the status
2828         *      register via the MII bus. This can be used to give info
2829         *      about link changes (up/down), and possible switch to alternate
2830         *      media.
2831         *
2832         * ******************************************************************/
2833
2834 void TLan_PhyMonitor( struct net_device *dev )
2835 {
2836         TLanPrivateInfo *priv = netdev_priv(dev);
2837         u16     phy;
2838         u16     phy_status;
2839
2840         phy = priv->phy[priv->phyNum];
2841
2842         /* Get PHY status register */
2843         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &phy_status );
2844
2845         /* Check if link has been lost */
2846         if (!(phy_status & MII_GS_LINK)) {
2847                if (priv->link) {
2848                       priv->link = 0;
2849                       printk(KERN_DEBUG "TLAN: %s has lost link\n", dev->name);
2850                       netif_carrier_off(dev);
2851                       TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2852                       return;
2853                 }
2854         }
2855
2856         /* Link restablished? */
2857         if ((phy_status & MII_GS_LINK) && !priv->link) {
2858                 priv->link = 1;
2859                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", dev->name);
2860                 netif_carrier_on(dev);
2861         }
2862
2863         /* Setup a new monitor */
2864         TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2865 }
2866
2867 #endif /* MONITOR */
2868
2869
2870 /*****************************************************************************
2871 ******************************************************************************
2872
2873         ThunderLAN Driver MII Routines
2874
2875         These routines are based on the information in Chap. 2 of the
2876         "ThunderLAN Programmer's Guide", pp. 15-24.
2877
2878 ******************************************************************************
2879 *****************************************************************************/
2880
2881
2882         /***************************************************************
2883          *      TLan_MiiReadReg
2884          *
2885          *      Returns:
2886          *              0       if ack received ok
2887          *              1       otherwise.
2888          *
2889          *      Parms:
2890          *              dev             The device structure containing
2891          *                              The io address and interrupt count
2892          *                              for this device.
2893          *              phy             The address of the PHY to be queried.
2894          *              reg             The register whose contents are to be
2895          *                              retrieved.
2896          *              val             A pointer to a variable to store the
2897          *                              retrieved value.
2898          *
2899          *      This function uses the TLAN's MII bus to retrieve the contents
2900          *      of a given register on a PHY.  It sends the appropriate info
2901          *      and then reads the 16-bit register value from the MII bus via
2902          *      the TLAN SIO register.
2903          *
2904          **************************************************************/
2905
2906 int TLan_MiiReadReg( struct net_device *dev, u16 phy, u16 reg, u16 *val )
2907 {
2908         u8      nack;
2909         u16     sio, tmp;
2910         u32     i;
2911         int     err;
2912         int     minten;
2913         TLanPrivateInfo *priv = netdev_priv(dev);
2914         unsigned long flags = 0;
2915
2916         err = FALSE;
2917         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2918         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2919
2920         if (!in_irq())
2921                 spin_lock_irqsave(&priv->lock, flags);
2922
2923         TLan_MiiSync(dev->base_addr);
2924
2925         minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
2926         if ( minten )
2927                 TLan_ClearBit(TLAN_NET_SIO_MINTEN, sio);
2928
2929         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Start ( 01b ) */
2930         TLan_MiiSendData( dev->base_addr, 0x2, 2 );     /* Read  ( 10b ) */
2931         TLan_MiiSendData( dev->base_addr, phy, 5 );     /* Device #      */
2932         TLan_MiiSendData( dev->base_addr, reg, 5 );     /* Register #    */
2933
2934
2935         TLan_ClearBit(TLAN_NET_SIO_MTXEN, sio);         /* Change direction */
2936
2937         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Clock Idle bit */
2938         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2939         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Wait 300ns */
2940
2941         nack = TLan_GetBit(TLAN_NET_SIO_MDATA, sio);    /* Check for ACK */
2942         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);            /* Finish ACK */
2943         if (nack) {                                     /* No ACK, so fake it */
2944                 for (i = 0; i < 16; i++) {
2945                         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2946                         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2947                 }
2948                 tmp = 0xffff;
2949                 err = TRUE;
2950         } else {                                        /* ACK, so read data */
2951                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2952                         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2953                         if (TLan_GetBit(TLAN_NET_SIO_MDATA, sio))
2954                                 tmp |= i;
2955                         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2956                 }
2957         }
2958
2959
2960         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Idle cycle */
2961         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2962
2963         if ( minten )
2964                 TLan_SetBit(TLAN_NET_SIO_MINTEN, sio);
2965
2966         *val = tmp;
2967
2968         if (!in_irq())
2969                 spin_unlock_irqrestore(&priv->lock, flags);
2970
2971         return err;
2972
2973 } /* TLan_MiiReadReg */
2974
2975
2976
2977
2978         /***************************************************************
2979          *      TLan_MiiSendData
2980          *
2981          *      Returns:
2982          *              Nothing
2983          *      Parms:
2984          *              base_port       The base IO port of the adapter in
2985          *                              question.
2986          *              dev             The address of the PHY to be queried.
2987          *              data            The value to be placed on the MII bus.
2988          *              num_bits        The number of bits in data that are to
2989          *                              be placed on the MII bus.
2990          *
2991          *      This function sends on sequence of bits on the MII
2992          *      configuration bus.
2993          *
2994          **************************************************************/
2995
2996 void TLan_MiiSendData( u16 base_port, u32 data, unsigned num_bits )
2997 {
2998         u16 sio;
2999         u32 i;
3000
3001         if ( num_bits == 0 )
3002                 return;
3003
3004         outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
3005         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
3006         TLan_SetBit( TLAN_NET_SIO_MTXEN, sio );
3007
3008         for ( i = ( 0x1 << ( num_bits - 1 ) ); i; i >>= 1 ) {
3009                 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
3010                 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
3011                 if ( data & i )
3012                         TLan_SetBit( TLAN_NET_SIO_MDATA, sio );
3013                 else
3014                         TLan_ClearBit( TLAN_NET_SIO_MDATA, sio );
3015                 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3016                 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
3017         }
3018
3019 } /* TLan_MiiSendData */
3020
3021
3022
3023
3024         /***************************************************************
3025          *      TLan_MiiSync
3026          *
3027          *      Returns:
3028          *              Nothing
3029          *      Parms:
3030          *              base_port       The base IO port of the adapter in
3031          *                              question.
3032          *
3033          *      This functions syncs all PHYs in terms of the MII configuration
3034          *      bus.
3035          *
3036          **************************************************************/
3037
3038 void TLan_MiiSync( u16 base_port )
3039 {
3040         int i;
3041         u16 sio;
3042
3043         outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
3044         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
3045
3046         TLan_ClearBit( TLAN_NET_SIO_MTXEN, sio );
3047         for ( i = 0; i < 32; i++ ) {
3048                 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
3049                 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3050         }
3051
3052 } /* TLan_MiiSync */
3053
3054
3055
3056
3057         /***************************************************************
3058          *      TLan_MiiWriteReg
3059          *
3060          *      Returns:
3061          *              Nothing
3062          *      Parms:
3063          *              dev             The device structure for the device
3064          *                              to write to.
3065          *              phy             The address of the PHY to be written to.
3066          *              reg             The register whose contents are to be
3067          *                              written.
3068          *              val             The value to be written to the register.
3069          *
3070          *      This function uses the TLAN's MII bus to write the contents of a
3071          *      given register on a PHY.  It sends the appropriate info and then
3072          *      writes the 16-bit register value from the MII configuration bus
3073          *      via the TLAN SIO register.
3074          *
3075          **************************************************************/
3076
3077 void TLan_MiiWriteReg( struct net_device *dev, u16 phy, u16 reg, u16 val )
3078 {
3079         u16     sio;
3080         int     minten;
3081         unsigned long flags = 0;
3082         TLanPrivateInfo *priv = netdev_priv(dev);
3083
3084         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3085         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3086
3087         if (!in_irq())
3088                 spin_lock_irqsave(&priv->lock, flags);
3089
3090         TLan_MiiSync( dev->base_addr );
3091
3092         minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
3093         if ( minten )
3094                 TLan_ClearBit( TLAN_NET_SIO_MINTEN, sio );
3095
3096         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Start ( 01b ) */
3097         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Write ( 01b ) */
3098         TLan_MiiSendData( dev->base_addr, phy, 5 );     /* Device #      */
3099         TLan_MiiSendData( dev->base_addr, reg, 5 );     /* Register #    */
3100
3101         TLan_MiiSendData( dev->base_addr, 0x2, 2 );     /* Send ACK */
3102         TLan_MiiSendData( dev->base_addr, val, 16 );    /* Send Data */
3103
3104         TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );        /* Idle cycle */
3105         TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3106
3107         if ( minten )
3108                 TLan_SetBit( TLAN_NET_SIO_MINTEN, sio );
3109
3110         if (!in_irq())
3111                 spin_unlock_irqrestore(&priv->lock, flags);
3112
3113 } /* TLan_MiiWriteReg */
3114
3115
3116
3117
3118 /*****************************************************************************
3119 ******************************************************************************
3120
3121         ThunderLAN Driver Eeprom routines
3122
3123         The Compaq Netelligent 10 and 10/100 cards use a Microchip 24C02A
3124         EEPROM.  These functions are based on information in Microchip's
3125         data sheet.  I don't know how well this functions will work with
3126         other EEPROMs.
3127
3128 ******************************************************************************
3129 *****************************************************************************/
3130
3131
3132         /***************************************************************
3133          *      TLan_EeSendStart
3134          *
3135          *      Returns:
3136          *              Nothing
3137          *      Parms:
3138          *              io_base         The IO port base address for the
3139          *                              TLAN device with the EEPROM to
3140          *                              use.
3141          *
3142          *      This function sends a start cycle to an EEPROM attached
3143          *      to a TLAN chip.
3144          *
3145          **************************************************************/
3146
3147 void TLan_EeSendStart( u16 io_base )
3148 {
3149         u16     sio;
3150
3151         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3152         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3153
3154         TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3155         TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3156         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3157         TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3158         TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3159
3160 } /* TLan_EeSendStart */
3161
3162
3163
3164
3165         /***************************************************************
3166          *      TLan_EeSendByte
3167          *
3168          *      Returns:
3169          *              If the correct ack was received, 0, otherwise 1
3170          *      Parms:  io_base         The IO port base address for the
3171          *                              TLAN device with the EEPROM to
3172          *                              use.
3173          *              data            The 8 bits of information to
3174          *                              send to the EEPROM.
3175          *              stop            If TLAN_EEPROM_STOP is passed, a
3176          *                              stop cycle is sent after the
3177          *                              byte is sent after the ack is
3178          *                              read.
3179          *
3180          *      This function sends a byte on the serial EEPROM line,
3181          *      driving the clock to send each bit. The function then
3182          *      reverses transmission direction and reads an acknowledge
3183          *      bit.
3184          *
3185          **************************************************************/
3186
3187 int TLan_EeSendByte( u16 io_base, u8 data, int stop )
3188 {
3189         int     err;
3190         u8      place;
3191         u16     sio;
3192
3193         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3194         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3195
3196         /* Assume clock is low, tx is enabled; */
3197         for ( place = 0x80; place != 0; place >>= 1 ) {
3198                 if ( place & data )
3199                         TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3200                 else
3201                         TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3202                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3203                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3204         }
3205         TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3206         TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3207         err = TLan_GetBit( TLAN_NET_SIO_EDATA, sio );
3208         TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3209         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3210
3211         if ( ( ! err ) && stop ) {
3212                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );       /* STOP, raise data while clock is high */
3213                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3214                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3215         }
3216
3217         return ( err );
3218
3219 } /* TLan_EeSendByte */
3220
3221
3222
3223
3224         /***************************************************************
3225          *      TLan_EeReceiveByte
3226          *
3227          *      Returns:
3228          *              Nothing
3229          *      Parms:
3230          *              io_base         The IO port base address for the
3231          *                              TLAN device with the EEPROM to
3232          *                              use.
3233          *              data            An address to a char to hold the
3234          *                              data sent from the EEPROM.
3235          *              stop            If TLAN_EEPROM_STOP is passed, a
3236          *                              stop cycle is sent after the
3237          *                              byte is received, and no ack is
3238          *                              sent.
3239          *
3240          *      This function receives 8 bits of data from the EEPROM
3241          *      over the serial link.  It then sends and ack bit, or no
3242          *      ack and a stop bit.  This function is used to retrieve
3243          *      data after the address of a byte in the EEPROM has been
3244          *      sent.
3245          *
3246          **************************************************************/
3247
3248 void TLan_EeReceiveByte( u16 io_base, u8 *data, int stop )
3249 {
3250         u8  place;
3251         u16 sio;
3252
3253         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3254         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3255         *data = 0;
3256
3257         /* Assume clock is low, tx is enabled; */
3258         TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3259         for ( place = 0x80; place; place >>= 1 ) {
3260                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3261                 if ( TLan_GetBit( TLAN_NET_SIO_EDATA, sio ) )
3262                         *data |= place;
3263                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3264         }
3265
3266         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3267         if ( ! stop ) {
3268                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );       /* Ack = 0 */
3269                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3270                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3271         } else {
3272                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );         /* No ack = 1 (?) */
3273                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3274                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3275                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );       /* STOP, raise data while clock is high */
3276                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3277                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3278         }
3279
3280 } /* TLan_EeReceiveByte */
3281
3282
3283
3284
3285         /***************************************************************
3286          *      TLan_EeReadByte
3287          *
3288          *      Returns:
3289          *              No error = 0, else, the stage at which the error
3290          *              occurred.
3291          *      Parms:
3292          *              io_base         The IO port base address for the
3293          *                              TLAN device with the EEPROM to
3294          *                              use.
3295          *              ee_addr         The address of the byte in the
3296          *                              EEPROM whose contents are to be
3297          *                              retrieved.
3298          *              data            An address to a char to hold the
3299          *                              data obtained from the EEPROM.
3300          *
3301          *      This function reads a byte of information from an byte
3302          *      cell in the EEPROM.
3303          *
3304          **************************************************************/
3305
3306 int TLan_EeReadByte( struct net_device *dev, u8 ee_addr, u8 *data )
3307 {
3308         int err;
3309         TLanPrivateInfo *priv = netdev_priv(dev);
3310         unsigned long flags = 0;
3311         int ret=0;
3312
3313         spin_lock_irqsave(&priv->lock, flags);
3314
3315         TLan_EeSendStart( dev->base_addr );
3316         err = TLan_EeSendByte( dev->base_addr, 0xA0, TLAN_EEPROM_ACK );
3317         if (err)
3318         {
3319                 ret=1;
3320                 goto fail;
3321         }
3322         err = TLan_EeSendByte( dev->base_addr, ee_addr, TLAN_EEPROM_ACK );
3323         if (err)
3324         {
3325                 ret=2;
3326                 goto fail;
3327         }
3328         TLan_EeSendStart( dev->base_addr );
3329         err = TLan_EeSendByte( dev->base_addr, 0xA1, TLAN_EEPROM_ACK );
3330         if (err)
3331         {
3332                 ret=3;
3333                 goto fail;
3334         }
3335         TLan_EeReceiveByte( dev->base_addr, data, TLAN_EEPROM_STOP );
3336 fail:
3337         spin_unlock_irqrestore(&priv->lock, flags);
3338
3339         return ret;
3340
3341 } /* TLan_EeReadByte */
3342
3343
3344