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