drivers/sk98lin/skge.c

   1 /******************************************************************************
   2  *
   3  * Name:    skge.c
   4  * Project:     GEnesis, PCI Gigabit Ethernet Adapter
   5  * Version:     $Revision: 1.46 $
   6  * Date:        $Date: 2003/02/25 14:16:36 $
   7  * Purpose:     The main driver source module
   8  *
   9  ******************************************************************************/
  10
  11 /******************************************************************************
  12  *
  13  *      (C)Copyright 1998-2003 SysKonnect GmbH.
  14  *
  15  *      Driver for SysKonnect Gigabit Ethernet Server Adapters:
  16  *
  17  *      SK-9871 (single link 1000Base-ZX)
  18  *      SK-9872 (dual link   1000Base-ZX)
  19  *      SK-9861 (single link 1000Base-SX, VF45 Volition Plug)
  20  *      SK-9862 (dual link   1000Base-SX, VF45 Volition Plug)
  21  *      SK-9841 (single link 1000Base-LX)
  22  *      SK-9842 (dual link   1000Base-LX)
  23  *      SK-9843 (single link 1000Base-SX)
  24  *      SK-9844 (dual link   1000Base-SX)
  25  *      SK-9821 (single link 1000Base-T)
  26  *      SK-9822 (dual link   1000Base-T)
  27  *      SK-9881 (single link 1000Base-SX V2 LC)
  28  *      SK-9871 (single link 1000Base-ZX V2)
  29  *      SK-9861 (single link 1000Base-SX V2, VF45 Volition Plug)
  30  *      SK-9841 (single link 1000Base-LX V2)
  31  *      SK-9843 (single link 1000Base-SX V2)
  32  *      SK-9821 (single link 1000Base-T V2)
  33  *
  34  *      Created 10-Feb-1999, based on Linux' acenic.c, 3c59x.c and
  35  *      SysKonnects GEnesis Solaris driver
  36  *      Author: Christoph Goos (cgoos@syskonnect.de)
  37  *              Mirko Lindner (mlindner@syskonnect.de)
  38  *
  39  *      Address all question to: linux@syskonnect.de
  40  *
  41  *      The technical manual for the adapters is available from SysKonnect's
  42  *      web pages: www.syskonnect.com
  43  *      Goto "Support" and search Knowledge Base for "manual".
  44  *
  45  *      This program is free software; you can redistribute it and/or modify
  46  *      it under the terms of the GNU General Public License as published by
  47  *      the Free Software Foundation; either version 2 of the License, or
  48  *      (at your option) any later version.
  49  *
  50  *      The information in this file is provided "AS IS" without warranty.
  51  *
  52  ******************************************************************************/
  53
  54 /******************************************************************************
  55  *
  56  * History:
  57  *
  58  *      $Log: skge.c,v $
  59  *      Revision 1.46  2003/02/25 14:16:36  mlindner
  60  *      Fix: Copyright statement
  61  *
  62  *      Revision 1.45  2003/02/25 13:25:55  mlindner
  63  *      Add: Performance improvements
  64  *      Add: Support for various vendors
  65  *      Fix: Init function
  66  *
  67  *      Revision 1.44  2003/01/09 09:25:26  mlindner
  68  *      Fix: Remove useless init_module/cleanup_module forward declarations
  69  *
  70  *      Revision 1.43  2002/11/29 08:42:41  mlindner
  71  *      Fix: Boot message
  72  *
  73  *      Revision 1.42  2002/11/28 13:30:23  mlindner
  74  *      Add: New frame check
  75  *
  76  *      Revision 1.41  2002/11/27 13:55:18  mlindner
  77  *      Fix: Drop wrong csum packets
  78  *      Fix: Initialize proc_entry after hw check
  79  *
  80  *      Revision 1.40  2002/10/31 07:50:37  tschilli
  81  *      Function SkGeInitAssignRamToQueues() from common module inserted.
  82  *      Autonegotiation is set to ON for all adapters.
  83  *      LinkSpeedUsed is used in link up status report.
  84  *      Role parameter will show up for 1000 Mbps links only.
  85  *      GetConfiguration() inserted after init level 1 in SkGeChangeMtu().
  86  *      All return values of SkGeInit() and SkGeInitPort() are checked.
  87  *
  88  *      Revision 1.39  2002/10/02 12:56:05  mlindner
  89  *      Add: Support for Yukon
  90  *      Add: Support for ZEROCOPY, scatter-gather and hw checksum
  91  *      Add: New transmit ring function (use SG and TCP/UDP hardware checksumming)
  92  *      Add: New init function
  93  *      Add: Speed check and setup
  94  *      Add: Merge source for kernel 2.2.x and 2.4.x
  95  *      Add: Opcode check for tcp
  96  *      Add: Frame length check
  97  *      Fix: Transmit complete interrupt
  98  *      Fix: Interrupt moderation
  99  *
 100  *      Revision 1.29.2.13  2002/01/14 12:44:52  mlindner
 101  *      Fix: Rlmt modes
 102  *
 103  *      Revision 1.29.2.12  2001/12/07 12:06:18  mlindner
 104  *      Fix: malloc -> slab changes
 105  *
 106  *      Revision 1.29.2.11  2001/12/06 15:19:20  mlindner
 107  *      Add: DMA attributes
 108  *      Fix: Module initialisation
 109  *      Fix: pci_map_single and pci_unmap_single replaced
 110  *
 111  *      Revision 1.29.2.10  2001/12/06 09:56:50  mlindner
 112  *      Corrected some printk's
 113  *
 114  *      Revision 1.29.2.9  2001/09/05 12:15:34  mlindner
 115  *      Add: LBFO Changes
 116  *      Fix: Counter Errors (Jumbo == to long errors)
 117  *      Fix: Changed pAC->PciDev declaration
 118  *      Fix: too short counters
 119  *
 120  *      Revision 1.29.2.8  2001/06/25 12:10:44  mlindner
 121  *      fix: ReceiveIrq() changed.
 122  *
 123  *      Revision 1.29.2.7  2001/06/25 08:07:05  mlindner
 124  *      fix: RLMT locking in ReceiveIrq() changed.
 125  *
 126  *      Revision 1.29.2.6  2001/05/21 07:59:29  mlindner
 127  *      fix: MTU init problems
 128  *
 129  *      Revision 1.29.2.5  2001/05/08 11:25:08  mlindner
 130  *      fix: removed VLAN error message
 131  *
 132  *      Revision 1.29.2.4  2001/05/04 13:31:43  gklug
 133  *      fix: do not handle eth_copy on bad fragments received.
 134  *
 135  *      Revision 1.29.2.3  2001/04/23 08:06:43  mlindner
 136  *      Fix: error handling
 137  *
 138  *      Revision 1.29.2.2  2001/03/15 12:04:54  mlindner
 139  *      Fixed memory problem
 140  *
 141  *      Revision 1.29.2.1  2001/03/12 16:41:44  mlindner
 142  *      add: procfs function
 143  *      add: dual-net function
 144  *      add: RLMT networks
 145  *      add: extended PNMI features
 146  *
 147  *      Kernel 2.4.x specific:
 148  *      Revision 1.xx  2000/09/12 13:31:56  cgoos
 149  *      Fixed missign "dev=NULL in skge_probe.
 150  *      Added counting for jumbo frames (corrects error statistic).
 151  *      Removed VLAN tag check (enables VLAN support).
 152  *
 153  *      Kernel 2.2.x specific:
 154  *      Revision 1.29  2000/02/21 13:31:56  cgoos
 155  *      Fixed "unused" warning for UltraSPARC change.
 156  *
 157  *      Partially kernel 2.2.x specific:
 158  *      Revision 1.28  2000/02/21 10:32:36  cgoos
 159  *      Added fixes for UltraSPARC.
 160  *      Now printing RlmtMode and PrefPort setting at startup.
 161  *      Changed XmitFrame return value.
 162  *      Fixed rx checksum calculation for BIG ENDIAN systems.
 163  *      Fixed rx jumbo frames counted as ierrors.
 164  *
 165  *
 166  *      Revision 1.27  1999/11/25 09:06:28  cgoos
 167  *      Changed base_addr to unsigned long.
 168  *
 169  *      Revision 1.26  1999/11/22 13:29:16  cgoos
 170  *      Changed license header to GPL.
 171  *      Changes for inclusion in linux kernel (2.2.13).
 172  *      Removed 2.0.x defines.
 173  *      Changed SkGeProbe to skge_probe.
 174  *      Added checks in SkGeIoctl.
 175  *
 176  *      Revision 1.25  1999/10/07 14:47:52  cgoos
 177  *      Changed 984x to 98xx.
 178  *
 179  *      Revision 1.24  1999/09/30 07:21:01  cgoos
 180  *      Removed SK_RLMT_SLOW_LOOKAHEAD option.
 181  *      Giving spanning tree packets also to OS now.
 182  *
 183  *      Revision 1.23  1999/09/29 07:36:50  cgoos
 184  *      Changed assignment for IsBc/IsMc.
 185  *
 186  *      Revision 1.22  1999/09/28 12:57:09  cgoos
 187  *      Added CheckQueue also to Single-Port-ISR.
 188  *
 189  *      Revision 1.21  1999/09/28 12:42:41  cgoos
 190  *      Changed parameter strings for RlmtMode.
 191  *
 192  *      Revision 1.20  1999/09/28 12:37:57  cgoos
 193  *      Added CheckQueue for fast delivery of RLMT frames.
 194  *
 195  *      Revision 1.19  1999/09/16 07:57:25  cgoos
 196  *      Copperfield changes.
 197  *
 198  *      Revision 1.18  1999/09/03 13:06:30  cgoos
 199  *      Fixed RlmtMode=CheckSeg bug: wrong DEV_KFREE_SKB in RLMT_SEND caused
 200  *      double allocated skb's.
 201  *      FrameStat in ReceiveIrq was accessed via wrong Rxd.
 202  *      Queue size for async. standby Tx queue was zero.
 203  *      FillRxLimit of 0 could cause problems with ReQueue, changed to 1.
 204  *      Removed debug output of checksum statistic.
 205  *
 206  *      Revision 1.17  1999/08/11 13:55:27  cgoos
 207  *      Transmit descriptor polling was not reenabled after SkGePortInit.
 208  *
 209  *      Revision 1.16  1999/07/27 15:17:29  cgoos
 210  *      Added some "\n" in output strings (removed while debuging...).
 211  *
 212  *      Revision 1.15  1999/07/23 12:09:30  cgoos
 213  *      Performance optimization, rx checksumming, large frame support.
 214  *
 215  *      Revision 1.14  1999/07/14 11:26:27  cgoos
 216  *      Removed Link LED settings (now in RLMT).
 217  *      Added status output at NET UP.
 218  *      Fixed SMP problems with Tx and SWITCH running in parallel.
 219  *      Fixed return code problem at RLMT_SEND event.
 220  *
 221  *      Revision 1.13  1999/04/07 10:11:42  cgoos
 222  *      Fixed Single Port problems.
 223  *      Fixed Multi-Adapter problems.
 224  *      Always display startup string.
 225  *
 226  *      Revision 1.12  1999/03/29 12:26:37  cgoos
 227  *      Reversed locking to fine granularity.
 228  *      Fixed skb double alloc problem (caused by incorrect xmit return code).
 229  *      Enhanced function descriptions.
 230  *
 231  *      Revision 1.11  1999/03/15 13:10:51  cgoos
 232  *      Changed device identifier in output string to ethX.
 233  *
 234  *      Revision 1.10  1999/03/15 12:12:34  cgoos
 235  *      Changed copyright notice.
 236  *
 237  *      Revision 1.9  1999/03/15 12:10:17  cgoos
 238  *      Changed locking to one driver lock.
 239  *      Added check of SK_AC-size (for consistency with library).
 240  *
 241  *      Revision 1.8  1999/03/08 11:44:02  cgoos
 242  *      Fixed missing dev->tbusy in SkGeXmit.
 243  *      Changed large frame (jumbo) buffer number.
 244  *      Added copying of short frames.
 245  *
 246  *      Revision 1.7  1999/03/04 13:26:57  cgoos
 247  *      Fixed spinlock calls for SMP.
 248  *
 249  *      Revision 1.6  1999/03/02 09:53:51  cgoos
 250  *      Added descriptor revertion for big endian machines.
 251  *
 252  *      Revision 1.5  1999/03/01 08:50:59  cgoos
 253  *      Fixed SkGeChangeMtu.
 254  *      Fixed pci config space accesses.
 255  *
 256  *      Revision 1.4  1999/02/18 15:48:44  cgoos
 257  *      Corrected some printk's.
 258  *
 259  *      Revision 1.3  1999/02/18 12:45:55  cgoos
 260  *      Changed SK_MAX_CARD_PARAM to default 16
 261  *
 262  *      Revision 1.2  1999/02/18 10:55:32  cgoos
 263  *      Removed SkGeDrvTimeStamp function.
 264  *      Printing "ethX:" before adapter type at adapter init.
 265  *
 266  *
 267  *      10-Feb-1999 cg  Created, based on Linux' acenic.c, 3c59x.c and
 268  *                      SysKonnects GEnesis Solaris driver
 269  *
 270  ******************************************************************************/
 271
 272 /******************************************************************************
 273  *
 274  * Possible compiler options (#define xxx / -Dxxx):
 275  *
 276  *      debugging can be enable by changing SK_DEBUG_CHKMOD and
 277  *      SK_DEBUG_CHKCAT in makefile (described there).
 278  *
 279  ******************************************************************************/
 280
 281 /******************************************************************************
 282  *
 283  * Description:
 284  *
 285  *      This is the main module of the Linux GE driver.
 286  *
 287  *      All source files except skge.c, skdrv1st.h, skdrv2nd.h and sktypes.h
 288  *      are part of SysKonnect's COMMON MODULES for the SK-98xx adapters.
 289  *      Those are used for drivers on multiple OS', so some thing may seem
 290  *      unnecessary complicated on Linux. Please do not try to 'clean up'
 291  *      them without VERY good reasons, because this will make it more
 292  *      difficult to keep the Linux driver in synchronisation with the
 293  *      other versions.
 294  *
 295  * Include file hierarchy:
 296  *
 297  *      <linux/module.h>
 298  *
 299  *      "h/skdrv1st.h"
 300  *              <linux/version.h>
 301  *              <linux/types.h>
 302  *              <linux/kernel.h>
 303  *              <linux/string.h>
 304  *              <linux/errno.h>
 305  *              <linux/ioport.h>
 306  *              <linux/slab.h>
 307  *              <linux/interrupt.h>
 308  *              <linux/pci.h>
 309  *              <asm/byteorder.h>
 310  *              <asm/bitops.h>
 311  *              <asm/io.h>
 312  *              <linux/netdevice.h>
 313  *              <linux/etherdevice.h>
 314  *              <linux/skbuff.h>
 315  *          those three depending on kernel version used:
 316  *              <linux/bios32.h>
 317  *              <linux/init.h>
 318  *              <asm/uaccess.h>
 319  *              <net/checksum.h>
 320  *
 321  *              "h/skerror.h"
 322  *              "h/skdebug.h"
 323  *              "h/sktypes.h"
 324  *              "h/lm80.h"
 325  *              "h/xmac_ii.h"
 326  *
 327  *      "h/skdrv2nd.h"
 328  *              "h/skqueue.h"
 329  *              "h/skgehwt.h"
 330  *              "h/sktimer.h"
 331  *              "h/ski2c.h"
 332  *              "h/skgepnmi.h"
 333  *              "h/skvpd.h"
 334  *              "h/skgehw.h"
 335  *              "h/skgeinit.h"
 336  *              "h/skaddr.h"
 337  *              "h/skgesirq.h"
 338  *              "h/skcsum.h"
 339  *              "h/skrlmt.h"
 340  *
 341  ******************************************************************************/
 342
 343 #include        "h/skversion.h"
 344 #if 0
 345 #include        <linux/module.h>
 346 #include        <linux/init.h>
 347 #include        <linux/proc_fs.h>
 348 #endif
 349 #include        "h/skdrv1st.h"
 350 #include        "h/skdrv2nd.h"
 351
 352
 353 /* defines ******************************************************************/
 354 /* for debuging on x86 only */
 355 /* #define BREAKPOINT() asm(" int $3"); */
 356
 357 /* use the scatter-gather functionality with sendfile() */
 358 #if 0
 359 #define SK_ZEROCOPY
 360 #endif
 361
 362 /* use of a transmit complete interrupt */
 363 #define USE_TX_COMPLETE
 364
 365 /* use interrupt moderation (for tx complete only) */
 366 #define USE_INT_MOD
 367 #define INTS_PER_SEC    1000
 368
 369 /*
 370  * threshold for copying small receive frames
 371  * set to 0 to avoid copying, set to 9001 to copy all frames
 372  */
 373 #define SK_COPY_THRESHOLD       50
 374
 375 /* number of adapters that can be configured via command line params */
 376 #define SK_MAX_CARD_PARAM       16
 377
 378
 379 /*
 380  * use those defines for a compile-in version of the driver instead
 381  * of command line parameters
 382  */
 383 // #define LINK_SPEED_A {"Auto", }
 384 // #define LINK_SPEED_B {"Auto", }
 385 // #define AUTO_NEG_A   {"Sense", }
 386 // #define AUTO_NEG_B   {"Sense", }
 387 // #define DUP_CAP_A    {"Both", }
 388 // #define DUP_CAP_B    {"Both", }
 389 // #define FLOW_CTRL_A  {"SymOrRem", }
 390 // #define FLOW_CTRL_B  {"SymOrRem", }
 391 // #define ROLE_A       {"Auto", }
 392 // #define ROLE_B       {"Auto", }
 393 // #define PREF_PORT    {"A", }
 394 // #define RLMT_MODE    {"CheckLinkState", }
 395
 396 #define DEV_KFREE_SKB(skb) dev_kfree_skb(skb)
 397 #define DEV_KFREE_SKB_IRQ(skb) dev_kfree_skb_irq(skb)
 398 #define DEV_KFREE_SKB_ANY(skb) dev_kfree_skb_any(skb)
 399
 400 /* function prototypes ******************************************************/
 401 static void     FreeResources(struct SK_NET_DEVICE *dev);
 402 static int      SkGeBoardInit(struct SK_NET_DEVICE *dev, SK_AC *pAC);
 403 static SK_BOOL  BoardAllocMem(SK_AC *pAC);
 404 static void     BoardFreeMem(SK_AC *pAC);
 405 static void     BoardInitMem(SK_AC *pAC);
 406 static void     SetupRing(SK_AC*, void*, uintptr_t, RXD**, RXD**, RXD**,
 407                         int*, SK_BOOL);
 408
 409 #if 0
 410 static void     SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs);
 411 static void     SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs);
 412 static int      SkGeOpen(struct SK_NET_DEVICE *dev);
 413 static int      SkGeClose(struct SK_NET_DEVICE *dev);
 414 static int      SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev);
 415 static int      SkGeSetMacAddr(struct SK_NET_DEVICE *dev, void *p);
 416 static void     SkGeSetRxMode(struct SK_NET_DEVICE *dev);
 417 static struct   net_device_stats *SkGeStats(struct SK_NET_DEVICE *dev);
 418 static int      SkGeIoctl(struct SK_NET_DEVICE *dev, struct ifreq *rq, int cmd);
 419 #else
 420 void    SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs);
 421 void    SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs);
 422 int     SkGeOpen(struct SK_NET_DEVICE *dev);
 423 int     SkGeClose(struct SK_NET_DEVICE *dev);
 424 int     SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev);
 425 #endif
 426 static void     GetConfiguration(SK_AC*);
 427 static void     ProductStr(SK_AC*);
 428 static int      XmitFrame(SK_AC*, TX_PORT*, struct sk_buff*);
 429 static void     FreeTxDescriptors(SK_AC*pAC, TX_PORT*);
 430 static void     FillRxRing(SK_AC*, RX_PORT*);
 431 static SK_BOOL  FillRxDescriptor(SK_AC*, RX_PORT*);
 432 #if 0
 433 static void     ReceiveIrq(SK_AC*, RX_PORT*, SK_BOOL);
 434 #else
 435 void    ReceiveIrq(SK_AC*, RX_PORT*, SK_BOOL);
 436 #endif
 437 static void ClearAndStartRx(SK_AC*, int);
 438 static void     ClearTxIrq(SK_AC*, int, int);
 439 static void     ClearRxRing(SK_AC*, RX_PORT*);
 440 static void     ClearTxRing(SK_AC*, TX_PORT*);
 441 #if 0
 442 static void     SetQueueSizes(SK_AC     *pAC);
 443
 444 static int      SkGeChangeMtu(struct SK_NET_DEVICE *dev, int new_mtu);
 445 #endif
 446 static void     PortReInitBmu(SK_AC*, int);
 447 #if 0
 448 static int      SkGeIocMib(DEV_NET*, unsigned int, int);
 449 static int      XmitFrameSG(SK_AC*, TX_PORT*, struct sk_buff*);
 450 #endif
 451
 452 /*Extern */
 453
 454 /* external Proc function */
 455 extern int proc_read(
 456         char    *buffer,
 457         char    **buffer_location,
 458         off_t   offset,
 459         int             buffer_length,
 460         int             *eof,
 461         void    *data);
 462
 463 #ifdef DEBUG
 464 static void     DumpMsg(struct sk_buff*, char*);
 465 static void     DumpData(char*, int);
 466 static void     DumpLong(char*, int);
 467 #endif
 468 void dump_frag( SK_U8 *data, int length);
 469
 470 /* global variables *********************************************************/
 471 #if 0
 472 static const char *BootString = BOOT_STRING;
 473 #endif
 474 struct SK_NET_DEVICE *SkGeRootDev = NULL;
 475 static int probed __initdata = 0;
 476
 477 /* local variables **********************************************************/
 478 static uintptr_t TxQueueAddr[SK_MAX_MACS][2] = {{0x680, 0x600},{0x780, 0x700}};
 479 static uintptr_t RxQueueAddr[SK_MAX_MACS] = {0x400, 0x480};
 480
 481
 482 /* local variables **********************************************************/
 483 const char SK_Root_Dir_entry[8];
 484
 485 #if 0
 486 static struct proc_dir_entry    *pSkRootDir;
 487 #endif
 488
 489
 490 static struct pci_device_id supported[] = {
 491         {PCI_VENDOR_ID_3COM, 0x1700},
 492         {PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE},
 493         {PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE_SA},
 494         {}
 495 };
 496
 497
 498 /*****************************************************************************
 499  *
 500  *      skge_probe - find all SK-98xx adapters
 501  *
 502  * Description:
 503  *      This function scans the PCI bus for SK-98xx adapters. Resources for
 504  *      each adapter are allocated and the adapter is brought into Init 1
 505  *      state.
 506  *
 507  * Returns:
 508  *      0, if everything is ok
 509  *      !=0, on error
 510  */
 511 #if 0
 512 static int __init skge_probe (void)
 513 #else
 514 int skge_probe (struct eth_device ** ret_dev)
 515 #endif
 516 {
 517 #if 0
 518         int                     proc_root_initialized = 0;
 519 #endif
 520         int                     boards_found = 0;
 521 #if 0
 522         int                     vendor_flag = SK_FALSE;
 523 #endif
 524         SK_AC                   *pAC;
 525         DEV_NET                 *pNet = NULL;
 526 #if 0
 527         struct proc_dir_entry   *pProcFile;
 528         struct pci_dev  *pdev = NULL;
 529         unsigned long           base_address;
 530 #else
 531         u32                     base_address;
 532 #endif
 533         struct SK_NET_DEVICE *dev = NULL;
 534 #if 0
 535         SK_BOOL DeviceFound = SK_FALSE;
 536 #endif
 537         SK_BOOL BootStringCount = SK_FALSE;
 538 #if 1
 539         pci_dev_t devno;
 540 #endif
 541
 542         if (probed)
 543                 return -ENODEV;
 544         probed++;
 545
 546         if (!pci_present())             /* is PCI support present? */
 547                 return -ENODEV;
 548
 549 #if 0
 550                 while((pdev = pci_find_class(PCI_CLASS_NETWORK_ETHERNET << 8, pdev)))
 551 #else
 552                 while((devno = pci_find_devices (supported, boards_found)) >= 0)
 553 #endif
 554                 {
 555
 556                 dev = NULL;
 557                 pNet = NULL;
 558
 559
 560 #if 0
 561                 SK_PCI_ISCOMPLIANT(vendor_flag, pdev);
 562                 if (!vendor_flag)
 563                         continue;
 564 #endif
 565
 566 /*              if ((pdev->vendor != PCI_VENDOR_ID_SYSKONNECT) &&
 567                         ((pdev->device != PCI_DEVICE_ID_SYSKONNECT_GE) ||
 568                         (pdev->device != PCI_DEVICE_ID_SYSKONNECT_YU))){
 569                         continue;
 570                 }
 571 */
 572 #if 0
 573                 /* Configure DMA attributes. */
 574                 if (pci_set_dma_mask(pdev, (u64) 0xffffffffffffffff) &&
 575                         pci_set_dma_mask(pdev, (u64) 0xffffffff))
 576                         continue;
 577 #endif
 578
 579
 580 #if 0
 581                 if ((dev = init_etherdev(dev, sizeof(DEV_NET))) == NULL) {
 582                         printk(KERN_ERR "Unable to allocate etherdev "
 583                                "structure!\n");
 584                         break;
 585                 }
 586 #else
 587                 dev = malloc (sizeof *dev);
 588                 memset(dev, 0, sizeof(*dev));
 589                 dev->priv = malloc(sizeof(DEV_NET));
 590 #endif
 591
 592                 if (dev->priv == NULL) {
 593                         printk(KERN_ERR "Unable to allocate adapter "
 594                                "structure!\n");
 595                         break;
 596                 }
 597
 598                 pNet = dev->priv;
 599                 pNet->pAC = kmalloc(sizeof(SK_AC), GFP_KERNEL);
 600                 if (pNet->pAC == NULL){
 601                         kfree(dev->priv);
 602                         printk(KERN_ERR "Unable to allocate adapter "
 603                                "structure!\n");
 604                         break;
 605                 }
 606
 607                 /* Print message */
 608                 if (!BootStringCount) {
 609                         /* set display flag to TRUE so that */
 610                         /* we only display this string ONCE */
 611                         BootStringCount = SK_TRUE;
 612 #ifdef SK98_INFO
 613                         printk("%s\n", BootString);
 614 #endif
 615                 }
 616
 617                 memset(pNet->pAC, 0, sizeof(SK_AC));
 618                 pAC = pNet->pAC;
 619 #if 0
 620                 pAC->PciDev = pdev;
 621                 pAC->PciDevId = pdev->device;
 622                 pAC->dev[0] = dev;
 623                 pAC->dev[1] = dev;
 624 #else
 625                 pAC->PciDev = devno;
 626                 ret_dev[0] = pAC->dev[0] = dev;
 627                 ret_dev[1] = pAC->dev[1] = dev;
 628 #endif
 629                 sprintf(pAC->Name, "SysKonnect SK-98xx");
 630                 pAC->CheckQueue = SK_FALSE;
 631
 632                 pNet->Mtu = 1500;
 633                 pNet->Up = 0;
 634 #if 0
 635                 dev->irq = pdev->irq;
 636
 637                 dev->open =             &SkGeOpen;
 638                 dev->stop =             &SkGeClose;
 639                 dev->hard_start_xmit =  &SkGeXmit;
 640                 dev->get_stats =        &SkGeStats;
 641                 dev->set_multicast_list = &SkGeSetRxMode;
 642                 dev->set_mac_address =  &SkGeSetMacAddr;
 643                 dev->do_ioctl =         &SkGeIoctl;
 644                 dev->change_mtu =       &SkGeChangeMtu;
 645                 dev->flags &=           ~IFF_RUNNING;
 646 #endif
 647
 648 #ifdef SK_ZEROCOPY
 649                 if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 650                         /* Use only if yukon hardware */
 651                         /* SK and ZEROCOPY - fly baby... */
 652                         dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 653                 }
 654 #endif
 655
 656 #if 0
 657                 /*
 658                  * Dummy value.
 659                  */
 660                 dev->base_addr = 42;
 661                 pci_set_master(pdev);
 662
 663                 pci_set_master(pdev);
 664                 base_address = pci_resource_start (pdev, 0);
 665 #else
 666                 pci_write_config_dword(devno,
 667                                        PCI_COMMAND,
 668                                        PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
 669                 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0,
 670                                        &base_address);
 671 #endif
 672
 673 #ifdef SK_BIG_ENDIAN
 674                 /*
 675                  * On big endian machines, we use the adapter's aibility of
 676                  * reading the descriptors as big endian.
 677                  */
 678                 {
 679                 SK_U32          our2;
 680                         SkPciReadCfgDWord(pAC, PCI_OUR_REG_2, &our2);
 681                         our2 |= PCI_REV_DESC;
 682                         SkPciWriteCfgDWord(pAC, PCI_OUR_REG_2, our2);
 683                 }
 684 #endif
 685
 686                 /*
 687                  * Remap the regs into kernel space.
 688                  */
 689 #if 0
 690                 pAC->IoBase = (char*)ioremap(base_address, 0x4000);
 691 #else
 692                 pAC->IoBase = (char*)pci_mem_to_phys(devno, base_address);
 693 #endif
 694
 695                 if (!pAC->IoBase){
 696                         printk(KERN_ERR "%s:  Unable to map I/O register, "
 697                                "SK 98xx No. %i will be disabled.\n",
 698                                dev->name, boards_found);
 699                         kfree(dev);
 700                         break;
 701                 }
 702
 703                 pAC->Index = boards_found;
 704                 if (SkGeBoardInit(dev, pAC)) {
 705                         FreeResources(dev);
 706                         kfree(dev);
 707                         continue;
 708                 }
 709
 710 #if 0
 711                 memcpy((caddr_t) &dev->dev_addr,
 712                         (caddr_t) &pAC->Addr.Net[0].CurrentMacAddress, 6);
 713 #else
 714                 memcpy((caddr_t) &dev->enetaddr,
 715                         (caddr_t) &pAC->Addr.Net[0].CurrentMacAddress, 6);
 716 #endif
 717
 718 #if 0
 719                 /* First adapter... Create proc and print message */
 720                 if (!DeviceFound) {
 721                         DeviceFound = SK_TRUE;
 722                         SK_MEMCPY(&SK_Root_Dir_entry, BootString,
 723                                 sizeof(SK_Root_Dir_entry) - 1);
 724
 725                         /*Create proc (directory)*/
 726                         if(!proc_root_initialized) {
 727                                 pSkRootDir = create_proc_entry(SK_Root_Dir_entry,
 728                                         S_IFDIR | S_IWUSR | S_IRUGO | S_IXUGO, proc_net);
 729                                 proc_root_initialized = 1;
 730                         }
 731
 732                         pSkRootDir->owner = THIS_MODULE;
 733                 }
 734
 735
 736
 737                 /* Create proc file */
 738                 pProcFile = create_proc_entry(dev->name,
 739                         S_IFREG | S_IXUSR | S_IWGRP | S_IROTH,
 740                         pSkRootDir);
 741
 742
 743                 pProcFile->read_proc = proc_read;
 744                 pProcFile->write_proc = NULL;
 745                 pProcFile->nlink = 1;
 746                 pProcFile->size = sizeof(dev->name + 1);
 747                 pProcFile->data = (void *)pProcFile;
 748 #endif
 749
 750                 pNet->PortNr = 0;
 751                 pNet->NetNr = 0;
 752
 753 #ifdef SK_ZEROCOPY
 754                         if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 755                                 /* SG and ZEROCOPY - fly baby... */
 756                                 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 757                         }
 758 #endif
 759
 760                 boards_found++;
 761
 762                 /* More then one port found */
 763                 if ((pAC->GIni.GIMacsFound == 2 ) && (pAC->RlmtNets == 2)) {
 764 #if 0
 765                         if ((dev = init_etherdev(NULL, sizeof(DEV_NET))) == 0) {
 766                                 printk(KERN_ERR "Unable to allocate etherdev "
 767                                         "structure!\n");
 768                                 break;
 769                         }
 770 #else
 771                         dev = malloc (sizeof *dev);
 772                         memset(dev, 0, sizeof(*dev));
 773                         dev->priv = malloc(sizeof(DEV_NET));
 774 #endif
 775
 776                         pAC->dev[1] = dev;
 777                         pNet = dev->priv;
 778                         pNet->PortNr = 1;
 779                         pNet->NetNr = 1;
 780                         pNet->pAC = pAC;
 781                         pNet->Mtu = 1500;
 782                         pNet->Up = 0;
 783
 784 #if 0
 785                         dev->open =             &SkGeOpen;
 786                         dev->stop =             &SkGeClose;
 787                         dev->hard_start_xmit =  &SkGeXmit;
 788                         dev->get_stats =        &SkGeStats;
 789                         dev->set_multicast_list = &SkGeSetRxMode;
 790                         dev->set_mac_address =  &SkGeSetMacAddr;
 791                         dev->do_ioctl =         &SkGeIoctl;
 792                         dev->change_mtu =       &SkGeChangeMtu;
 793                         dev->flags &=           ~IFF_RUNNING;
 794 #endif
 795
 796 #ifdef SK_ZEROCOPY
 797                         if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 798                                 /* SG and ZEROCOPY - fly baby... */
 799                                 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 800                         }
 801 #endif
 802
 803 #if 0
 804                         pProcFile = create_proc_entry(dev->name,
 805                                 S_IFREG | S_IXUSR | S_IWGRP | S_IROTH,
 806                                 pSkRootDir);
 807
 808
 809                         pProcFile->read_proc = proc_read;
 810                         pProcFile->write_proc = NULL;
 811                         pProcFile->nlink = 1;
 812                         pProcFile->size = sizeof(dev->name + 1);
 813                         pProcFile->data = (void *)pProcFile;
 814 #endif
 815
 816 #if 0
 817                         memcpy((caddr_t) &dev->dev_addr,
 818                         (caddr_t) &pAC->Addr.Net[1].CurrentMacAddress, 6);
 819 #else
 820                         memcpy((caddr_t) &dev->enetaddr,
 821                         (caddr_t) &pAC->Addr.Net[1].CurrentMacAddress, 6);
 822 #endif
 823
 824                         printk("%s: %s\n", dev->name, pAC->DeviceStr);
 825                         printk("      PrefPort:B  RlmtMode:Dual Check Link State\n");
 826
 827                 }
 828
 829
 830                 /* Save the hardware revision */
 831                 pAC->HWRevision = (((pAC->GIni.GIPciHwRev >> 4) & 0x0F)*10) +
 832                         (pAC->GIni.GIPciHwRev & 0x0F);
 833
 834                 /*
 835                  * This is bollocks, but we need to tell the net-init
 836                  * code that it shall go for the next device.
 837                  */
 838 #if 0
 839 #ifndef MODULE
 840                 dev->base_addr = 0;
 841 #endif
 842 #endif
 843         }
 844
 845         /*
 846          * If we're at this point we're going through skge_probe() for
 847          * the first time.  Return success (0) if we've initialized 1
 848          * or more boards. Otherwise, return failure (-ENODEV).
 849          */
 850
 851         return boards_found;
 852 } /* skge_probe */
 853
 854
 855 /*****************************************************************************
 856  *
 857  *      FreeResources - release resources allocated for adapter
 858  *
 859  * Description:
 860  *      This function releases the IRQ, unmaps the IO and
 861  *      frees the desriptor ring.
 862  *
 863  * Returns: N/A
 864  *
 865  */
 866 static void FreeResources(struct SK_NET_DEVICE *dev)
 867 {
 868 SK_U32 AllocFlag;
 869 DEV_NET         *pNet;
 870 SK_AC           *pAC;
 871
 872         if (dev->priv) {
 873                 pNet = (DEV_NET*) dev->priv;
 874                 pAC = pNet->pAC;
 875                 AllocFlag = pAC->AllocFlag;
 876 #if 0
 877                 if (AllocFlag & SK_ALLOC_IRQ) {
 878                         free_irq(dev->irq, dev);
 879                 }
 880                 if (pAC->IoBase) {
 881                         iounmap(pAC->IoBase);
 882                 }
 883 #endif
 884                 if (pAC->pDescrMem) {
 885                         BoardFreeMem(pAC);
 886                 }
 887         }
 888
 889 } /* FreeResources */
 890
 891 #if 0
 892 MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>");
 893 MODULE_DESCRIPTION("SysKonnect SK-NET Gigabit Ethernet SK-98xx driver");
 894 MODULE_LICENSE("GPL");
 895 MODULE_PARM(Speed_A,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 896 MODULE_PARM(Speed_B,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 897 MODULE_PARM(AutoNeg_A,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 898 MODULE_PARM(AutoNeg_B,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 899 MODULE_PARM(DupCap_A,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 900 MODULE_PARM(DupCap_B,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 901 MODULE_PARM(FlowCtrl_A, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 902 MODULE_PARM(FlowCtrl_B, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 903 MODULE_PARM(Role_A,         "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 904 MODULE_PARM(Role_B,         "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 905 MODULE_PARM(PrefPort,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 906 MODULE_PARM(RlmtMode,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 907 /* not used, just there because every driver should have them: */
 908 MODULE_PARM(options,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "i");
 909 MODULE_PARM(debug,      "i");
 910 #endif
 911
 912
 913 #ifdef LINK_SPEED_A
 914 static char *Speed_A[SK_MAX_CARD_PARAM] = LINK_SPEED_A;
 915 #else
 916 static char *Speed_A[SK_MAX_CARD_PARAM] = {"", };
 917 #endif
 918
 919 #ifdef LINK_SPEED_B
 920 static char *Speed_B[SK_MAX_CARD_PARAM] = LINK_SPEED_B;
 921 #else
 922 static char *Speed_B[SK_MAX_CARD_PARAM] = {"", };
 923 #endif
 924
 925 #ifdef AUTO_NEG_A
 926 static char *AutoNeg_A[SK_MAX_CARD_PARAM] = AUTO_NEG_A;
 927 #else
 928 static char *AutoNeg_A[SK_MAX_CARD_PARAM] = {"", };
 929 #endif
 930
 931 #ifdef DUP_CAP_A
 932 static char *DupCap_A[SK_MAX_CARD_PARAM] = DUP_CAP_A;
 933 #else
 934 static char *DupCap_A[SK_MAX_CARD_PARAM] = {"", };
 935 #endif
 936
 937 #ifdef FLOW_CTRL_A
 938 static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = FLOW_CTRL_A;
 939 #else
 940 static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = {"", };
 941 #endif
 942
 943 #ifdef ROLE_A
 944 static char *Role_A[SK_MAX_CARD_PARAM] = ROLE_A;
 945 #else
 946 static char *Role_A[SK_MAX_CARD_PARAM] = {"", };
 947 #endif
 948
 949 #ifdef AUTO_NEG_B
 950 static char *AutoNeg_B[SK_MAX_CARD_PARAM] = AUTO_NEG_B;
 951 #else
 952 static char *AutoNeg_B[SK_MAX_CARD_PARAM] = {"", };
 953 #endif
 954
 955 #ifdef DUP_CAP_B
 956 static char *DupCap_B[SK_MAX_CARD_PARAM] = DUP_CAP_B;
 957 #else
 958 static char *DupCap_B[SK_MAX_CARD_PARAM] = {"", };
 959 #endif
 960
 961 #ifdef FLOW_CTRL_B
 962 static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = FLOW_CTRL_B;
 963 #else
 964 static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = {"", };
 965 #endif
 966
 967 #ifdef ROLE_B
 968 static char *Role_B[SK_MAX_CARD_PARAM] = ROLE_B;
 969 #else
 970 static char *Role_B[SK_MAX_CARD_PARAM] = {"", };
 971 #endif
 972
 973 #ifdef PREF_PORT
 974 static char *PrefPort[SK_MAX_CARD_PARAM] = PREF_PORT;
 975 #else
 976 static char *PrefPort[SK_MAX_CARD_PARAM] = {"", };
 977 #endif
 978
 979 #ifdef RLMT_MODE
 980 static char *RlmtMode[SK_MAX_CARD_PARAM] = RLMT_MODE;
 981 #else
 982 static char *RlmtMode[SK_MAX_CARD_PARAM] = {"", };
 983 #endif
 984
 985 #if 0
 986 static int debug = 0; /* not used */
 987 static int options[SK_MAX_CARD_PARAM] = {0, }; /* not used */
 988
 989
 990 /*****************************************************************************
 991  *
 992  *      skge_init_module - module initialization function
 993  *
 994  * Description:
 995  *      Very simple, only call skge_probe and return approriate result.
 996  *
 997  * Returns:
 998  *      0, if everything is ok
 999  *      !=0, on error
1000  */
1001 static int __init skge_init_module(void)
1002 {
1003         int cards;
1004         SkGeRootDev = NULL;
1005
1006         /* just to avoid warnings ... */
1007         debug = 0;
1008         options[0] = 0;
1009
1010         cards = skge_probe();
1011         if (cards == 0) {
1012                 printk("sk98lin: No adapter found.\n");
1013         }
1014         return cards ? 0 : -ENODEV;
1015 } /* skge_init_module */
1016
1017
1018 /*****************************************************************************
1019  *
1020  *      skge_cleanup_module - module unload function
1021  *
1022  * Description:
1023  *      Disable adapter if it is still running, free resources,
1024  *      free device struct.
1025  *
1026  * Returns: N/A
1027  */
1028 static void __exit skge_cleanup_module(void)
1029 {
1030 DEV_NET         *pNet;
1031 SK_AC           *pAC;
1032 struct SK_NET_DEVICE *next;
1033 unsigned long Flags;
1034 SK_EVPARA EvPara;
1035
1036         while (SkGeRootDev) {
1037                 pNet = (DEV_NET*) SkGeRootDev->priv;
1038                 pAC = pNet->pAC;
1039                 next = pAC->Next;
1040
1041                 netif_stop_queue(SkGeRootDev);
1042                 SkGeYellowLED(pAC, pAC->IoBase, 0);
1043
1044                 if(pAC->BoardLevel == 2) {
1045                         /* board is still alive */
1046                         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1047                         EvPara.Para32[0] = 0;
1048                         EvPara.Para32[1] = -1;
1049                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1050                         EvPara.Para32[0] = 1;
1051                         EvPara.Para32[1] = -1;
1052                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1053                         SkEventDispatcher(pAC, pAC->IoBase);
1054                         /* disable interrupts */
1055                         SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1056                         SkGeDeInit(pAC, pAC->IoBase);
1057                         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1058                         pAC->BoardLevel = 0;
1059                         /* We do NOT check here, if IRQ was pending, of course*/
1060                 }
1061
1062                 if(pAC->BoardLevel == 1) {
1063                         /* board is still alive */
1064                         SkGeDeInit(pAC, pAC->IoBase);
1065                         pAC->BoardLevel = 0;
1066                 }
1067
1068                 if ((pAC->GIni.GIMacsFound == 2) && pAC->RlmtNets == 2){
1069                         unregister_netdev(pAC->dev[1]);
1070                         kfree(pAC->dev[1]);
1071                 }
1072
1073                 FreeResources(SkGeRootDev);
1074
1075                 SkGeRootDev->get_stats = NULL;
1076                 /*
1077                  * otherwise unregister_netdev calls get_stats with
1078                  * invalid IO ...  :-(
1079                  */
1080                 unregister_netdev(SkGeRootDev);
1081                 kfree(SkGeRootDev);
1082                 kfree(pAC);
1083                 SkGeRootDev = next;
1084         }
1085
1086         /* clear proc-dir */
1087         remove_proc_entry(pSkRootDir->name, proc_net);
1088
1089 } /* skge_cleanup_module */
1090
1091 module_init(skge_init_module);
1092 module_exit(skge_cleanup_module);
1093 #endif
1094
1095
1096 /*****************************************************************************
1097  *
1098  *      SkGeBoardInit - do level 0 and 1 initialization
1099  *
1100  * Description:
1101  *      This function prepares the board hardware for running. The desriptor
1102  *      ring is set up, the IRQ is allocated and the configuration settings
1103  *      are examined.
1104  *
1105  * Returns:
1106  *      0, if everything is ok
1107  *      !=0, on error
1108  */
1109 static int __init SkGeBoardInit(struct SK_NET_DEVICE *dev, SK_AC *pAC)
1110 {
1111 short   i;
1112 unsigned long Flags;
1113 char    *DescrString = "sk98lin: Driver for Linux"; /* this is given to PNMI */
1114 char    *VerStr = VER_STRING;
1115 #if 0
1116 int     Ret;                    /* return code of request_irq */
1117 #endif
1118 SK_BOOL DualNet;
1119
1120         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1121                 ("IoBase: %08lX\n", (unsigned long)pAC->IoBase));
1122         for (i=0; i<SK_MAX_MACS; i++) {
1123                 pAC->TxPort[i][0].HwAddr = pAC->IoBase + TxQueueAddr[i][0];
1124                 pAC->TxPort[i][0].PortIndex = i;
1125                 pAC->RxPort[i].HwAddr = pAC->IoBase + RxQueueAddr[i];
1126                 pAC->RxPort[i].PortIndex = i;
1127         }
1128
1129         /* Initialize the mutexes */
1130         for (i=0; i<SK_MAX_MACS; i++) {
1131                 spin_lock_init(&pAC->TxPort[i][0].TxDesRingLock);
1132                 spin_lock_init(&pAC->RxPort[i].RxDesRingLock);
1133         }
1134         spin_lock_init(&pAC->SlowPathLock);
1135
1136         /* level 0 init common modules here */
1137
1138         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1139         /* Does a RESET on board ...*/
1140         if (SkGeInit(pAC, pAC->IoBase, 0) != 0) {
1141                 printk("HWInit (0) failed.\n");
1142                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1143                 return(-EAGAIN);
1144         }
1145         SkI2cInit(  pAC, pAC->IoBase, 0);
1146         SkEventInit(pAC, pAC->IoBase, 0);
1147         SkPnmiInit( pAC, pAC->IoBase, 0);
1148         SkAddrInit( pAC, pAC->IoBase, 0);
1149         SkRlmtInit( pAC, pAC->IoBase, 0);
1150         SkTimerInit(pAC, pAC->IoBase, 0);
1151
1152         pAC->BoardLevel = 0;
1153         pAC->RxBufSize = ETH_BUF_SIZE;
1154
1155         SK_PNMI_SET_DRIVER_DESCR(pAC, DescrString);
1156         SK_PNMI_SET_DRIVER_VER(pAC, VerStr);
1157
1158         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1159
1160         /* level 1 init common modules here (HW init) */
1161         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1162         if (SkGeInit(pAC, pAC->IoBase, 1) != 0) {
1163                 printk("HWInit (1) failed.\n");
1164                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1165                 return(-EAGAIN);
1166         }
1167         SkI2cInit(  pAC, pAC->IoBase, 1);
1168         SkEventInit(pAC, pAC->IoBase, 1);
1169         SkPnmiInit( pAC, pAC->IoBase, 1);
1170         SkAddrInit( pAC, pAC->IoBase, 1);
1171         SkRlmtInit( pAC, pAC->IoBase, 1);
1172         SkTimerInit(pAC, pAC->IoBase, 1);
1173
1174         GetConfiguration(pAC);
1175         if (pAC->RlmtNets == 2) {
1176                 pAC->GIni.GIPortUsage = SK_MUL_LINK;
1177         }
1178
1179         pAC->BoardLevel = 1;
1180         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1181
1182 #if 0
1183         if (pAC->GIni.GIMacsFound == 2) {
1184                  Ret = request_irq(dev->irq, SkGeIsr, SA_SHIRQ, pAC->Name, dev);
1185         } else if (pAC->GIni.GIMacsFound == 1) {
1186                 Ret = request_irq(dev->irq, SkGeIsrOnePort, SA_SHIRQ,
1187                         pAC->Name, dev);
1188         } else {
1189                 printk(KERN_WARNING "%s: Illegal number of ports: %d\n",
1190                        dev->name, pAC->GIni.GIMacsFound);
1191                 return -EAGAIN;
1192         }
1193
1194         if (Ret) {
1195                 printk(KERN_WARNING "%s: Requested IRQ %d is busy.\n",
1196                        dev->name, dev->irq);
1197                 return -EAGAIN;
1198         }
1199 #endif
1200         pAC->AllocFlag |= SK_ALLOC_IRQ;
1201
1202         /* Alloc memory for this board (Mem for RxD/TxD) : */
1203         if(!BoardAllocMem(pAC)) {
1204                 printk("No memory for descriptor rings.\n");
1205                 return(-EAGAIN);
1206         }
1207
1208         SkCsSetReceiveFlags(pAC,
1209                 SKCS_PROTO_IP | SKCS_PROTO_TCP | SKCS_PROTO_UDP,
1210                 &pAC->CsOfs1, &pAC->CsOfs2, 0);
1211         pAC->CsOfs = (pAC->CsOfs2 << 16) | pAC->CsOfs1;
1212
1213         BoardInitMem(pAC);
1214 #if 0
1215         SetQueueSizes(pAC);
1216 #else
1217         /* tschilling: New common function with minimum size check. */
1218         DualNet = SK_FALSE;
1219         if (pAC->RlmtNets == 2) {
1220                 DualNet = SK_TRUE;
1221         }
1222
1223         if (SkGeInitAssignRamToQueues(
1224                 pAC,
1225                 pAC->ActivePort,
1226                 DualNet)) {
1227                 BoardFreeMem(pAC);
1228                 printk("SkGeInitAssignRamToQueues failed.\n");
1229                 return(-EAGAIN);
1230         }
1231 #endif
1232
1233         /* Print adapter specific string from vpd */
1234         ProductStr(pAC);
1235 #ifdef SK98_INFO
1236         printk("%s: %s\n", dev->name, pAC->DeviceStr);
1237
1238         /* Print configuration settings */
1239         printk("      PrefPort:%c  RlmtMode:%s\n",
1240                 'A' + pAC->Rlmt.Net[0].Port[pAC->Rlmt.Net[0].PrefPort]->PortNumber,
1241                 (pAC->RlmtMode==0)  ? "Check Link State" :
1242                 ((pAC->RlmtMode==1) ? "Check Link State" :
1243                 ((pAC->RlmtMode==3) ? "Check Local Port" :
1244                 ((pAC->RlmtMode==7) ? "Check Segmentation" :
1245                 ((pAC->RlmtMode==17) ? "Dual Check Link State" :"Error")))));
1246 #endif
1247
1248         SkGeYellowLED(pAC, pAC->IoBase, 1);
1249
1250         /*
1251          * Register the device here
1252          */
1253         pAC->Next = SkGeRootDev;
1254         SkGeRootDev = dev;
1255
1256         return (0);
1257 } /* SkGeBoardInit */
1258
1259
1260 /*****************************************************************************
1261  *
1262  *      BoardAllocMem - allocate the memory for the descriptor rings
1263  *
1264  * Description:
1265  *      This function allocates the memory for all descriptor rings.
1266  *      Each ring is aligned for the desriptor alignment and no ring
1267  *      has a 4 GByte boundary in it (because the upper 32 bit must
1268  *      be constant for all descriptiors in one rings).
1269  *
1270  * Returns:
1271  *      SK_TRUE, if all memory could be allocated
1272  *      SK_FALSE, if not
1273  */
1274 static SK_BOOL BoardAllocMem(
1275 SK_AC   *pAC)
1276 {
1277 caddr_t         pDescrMem;      /* pointer to descriptor memory area */
1278 size_t          AllocLength;    /* length of complete descriptor area */
1279 int             i;              /* loop counter */
1280 unsigned long   BusAddr;
1281
1282
1283         /* rings plus one for alignment (do not cross 4 GB boundary) */
1284         /* RX_RING_SIZE is assumed bigger than TX_RING_SIZE */
1285 #if (BITS_PER_LONG == 32)
1286         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound + 8;
1287 #else
1288         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound
1289                 + RX_RING_SIZE + 8;
1290 #endif
1291
1292         pDescrMem = pci_alloc_consistent(pAC->PciDev, AllocLength,
1293                                          &pAC->pDescrMemDMA);
1294
1295         if (pDescrMem == NULL) {
1296                 return (SK_FALSE);
1297         }
1298         pAC->pDescrMem = pDescrMem;
1299         BusAddr = (unsigned long) pAC->pDescrMemDMA;
1300
1301         /* Descriptors need 8 byte alignment, and this is ensured
1302          * by pci_alloc_consistent.
1303          */
1304         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1305                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1306                         ("TX%d/A: pDescrMem: %lX,   PhysDescrMem: %lX\n",
1307                         i, (unsigned long) pDescrMem,
1308                         BusAddr));
1309                 pAC->TxPort[i][0].pTxDescrRing = pDescrMem;
1310                 pAC->TxPort[i][0].VTxDescrRing = BusAddr;
1311                 pDescrMem += TX_RING_SIZE;
1312                 BusAddr += TX_RING_SIZE;
1313
1314                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1315                         ("RX%d: pDescrMem: %lX,   PhysDescrMem: %lX\n",
1316                         i, (unsigned long) pDescrMem,
1317                         (unsigned long)BusAddr));
1318                 pAC->RxPort[i].pRxDescrRing = pDescrMem;
1319                 pAC->RxPort[i].VRxDescrRing = BusAddr;
1320                 pDescrMem += RX_RING_SIZE;
1321                 BusAddr += RX_RING_SIZE;
1322         } /* for */
1323
1324         return (SK_TRUE);
1325 } /* BoardAllocMem */
1326
1327
1328 /****************************************************************************
1329  *
1330  *      BoardFreeMem - reverse of BoardAllocMem
1331  *
1332  * Description:
1333  *      Free all memory allocated in BoardAllocMem: adapter context,
1334  *      descriptor rings, locks.
1335  *
1336  * Returns:     N/A
1337  */
1338 static void BoardFreeMem(
1339 SK_AC           *pAC)
1340 {
1341 size_t          AllocLength;    /* length of complete descriptor area */
1342
1343         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1344                 ("BoardFreeMem\n"));
1345 #if (BITS_PER_LONG == 32)
1346         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound + 8;
1347 #else
1348         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound
1349                 + RX_RING_SIZE + 8;
1350 #endif
1351
1352         pci_free_consistent(pAC->PciDev, AllocLength,
1353                             pAC->pDescrMem, pAC->pDescrMemDMA);
1354         pAC->pDescrMem = NULL;
1355 } /* BoardFreeMem */
1356
1357
1358 /*****************************************************************************
1359  *
1360  *      BoardInitMem - initiate the descriptor rings
1361  *
1362  * Description:
1363  *      This function sets the descriptor rings up in memory.
1364  *      The adapter is initialized with the descriptor start addresses.
1365  *
1366  * Returns:     N/A
1367  */
1368 static void BoardInitMem(
1369 SK_AC   *pAC)   /* pointer to adapter context */
1370 {
1371 int     i;              /* loop counter */
1372 int     RxDescrSize;    /* the size of a rx descriptor rounded up to alignment*/
1373 int     TxDescrSize;    /* the size of a tx descriptor rounded up to alignment*/
1374
1375         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1376                 ("BoardInitMem\n"));
1377
1378         RxDescrSize = (((sizeof(RXD) - 1) / DESCR_ALIGN) + 1) * DESCR_ALIGN;
1379         pAC->RxDescrPerRing = RX_RING_SIZE / RxDescrSize;
1380         TxDescrSize = (((sizeof(TXD) - 1) / DESCR_ALIGN) + 1) * DESCR_ALIGN;
1381         pAC->TxDescrPerRing = TX_RING_SIZE / RxDescrSize;
1382
1383         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1384                 SetupRing(
1385                         pAC,
1386                         pAC->TxPort[i][0].pTxDescrRing,
1387                         pAC->TxPort[i][0].VTxDescrRing,
1388                         (RXD**)&pAC->TxPort[i][0].pTxdRingHead,
1389                         (RXD**)&pAC->TxPort[i][0].pTxdRingTail,
1390                         (RXD**)&pAC->TxPort[i][0].pTxdRingPrev,
1391                         &pAC->TxPort[i][0].TxdRingFree,
1392                         SK_TRUE);
1393                 SetupRing(
1394                         pAC,
1395                         pAC->RxPort[i].pRxDescrRing,
1396                         pAC->RxPort[i].VRxDescrRing,
1397                         &pAC->RxPort[i].pRxdRingHead,
1398                         &pAC->RxPort[i].pRxdRingTail,
1399                         &pAC->RxPort[i].pRxdRingPrev,
1400                         &pAC->RxPort[i].RxdRingFree,
1401                         SK_FALSE);
1402         }
1403 } /* BoardInitMem */
1404
1405
1406 /*****************************************************************************
1407  *
1408  *      SetupRing - create one descriptor ring
1409  *
1410  * Description:
1411  *      This function creates one descriptor ring in the given memory area.
1412  *      The head, tail and number of free descriptors in the ring are set.
1413  *
1414  * Returns:
1415  *      none
1416  */
1417 static void SetupRing(
1418 SK_AC           *pAC,
1419 void            *pMemArea,      /* a pointer to the memory area for the ring */
1420 uintptr_t       VMemArea,       /* the virtual bus address of the memory area */
1421 RXD             **ppRingHead,   /* address where the head should be written */
1422 RXD             **ppRingTail,   /* address where the tail should be written */
1423 RXD             **ppRingPrev,   /* address where the tail should be written */
1424 int             *pRingFree,     /* address where the # of free descr. goes */
1425 SK_BOOL         IsTx)           /* flag: is this a tx ring */
1426 {
1427 int     i;              /* loop counter */
1428 int     DescrSize;      /* the size of a descriptor rounded up to alignment*/
1429 int     DescrNum;       /* number of descriptors per ring */
1430 RXD     *pDescr;        /* pointer to a descriptor (receive or transmit) */
1431 RXD     *pNextDescr;    /* pointer to the next descriptor */
1432 RXD     *pPrevDescr;    /* pointer to the previous descriptor */
1433 uintptr_t VNextDescr;   /* the virtual bus address of the next descriptor */
1434
1435         if (IsTx == SK_TRUE) {
1436                 DescrSize = (((sizeof(TXD) - 1) / DESCR_ALIGN) + 1) *
1437                         DESCR_ALIGN;
1438                 DescrNum = TX_RING_SIZE / DescrSize;
1439         } else {
1440                 DescrSize = (((sizeof(RXD) - 1) / DESCR_ALIGN) + 1) *
1441                         DESCR_ALIGN;
1442                 DescrNum = RX_RING_SIZE / DescrSize;
1443         }
1444
1445         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1446                 ("Descriptor size: %d   Descriptor Number: %d\n",
1447                 DescrSize,DescrNum));
1448
1449         pDescr = (RXD*) pMemArea;
1450         pPrevDescr = NULL;
1451         pNextDescr = (RXD*) (((char*)pDescr) + DescrSize);
1452         VNextDescr = VMemArea + DescrSize;
1453         for(i=0; i<DescrNum; i++) {
1454                 /* set the pointers right */
1455                 pDescr->VNextRxd = VNextDescr & 0xffffffffULL;
1456                 pDescr->pNextRxd = pNextDescr;
1457                 pDescr->TcpSumStarts = pAC->CsOfs;
1458
1459                 /* advance one step */
1460                 pPrevDescr = pDescr;
1461                 pDescr = pNextDescr;
1462                 pNextDescr = (RXD*) (((char*)pDescr) + DescrSize);
1463                 VNextDescr += DescrSize;
1464         }
1465         pPrevDescr->pNextRxd = (RXD*) pMemArea;
1466         pPrevDescr->VNextRxd = VMemArea;
1467         pDescr = (RXD*) pMemArea;
1468         *ppRingHead = (RXD*) pMemArea;
1469         *ppRingTail = *ppRingHead;
1470         *ppRingPrev = pPrevDescr;
1471         *pRingFree = DescrNum;
1472 } /* SetupRing */
1473
1474
1475 /*****************************************************************************
1476  *
1477  *      PortReInitBmu - re-initiate the descriptor rings for one port
1478  *
1479  * Description:
1480  *      This function reinitializes the descriptor rings of one port
1481  *      in memory. The port must be stopped before.
1482  *      The HW is initialized with the descriptor start addresses.
1483  *
1484  * Returns:
1485  *      none
1486  */
1487 static void PortReInitBmu(
1488 SK_AC   *pAC,           /* pointer to adapter context */
1489 int     PortIndex)      /* index of the port for which to re-init */
1490 {
1491         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1492                 ("PortReInitBmu "));
1493
1494         /* set address of first descriptor of ring in BMU */
1495         SK_OUT32(pAC->IoBase, TxQueueAddr[PortIndex][TX_PRIO_LOW]+
1496                 TX_Q_CUR_DESCR_LOW,
1497                 (uint32_t)(((caddr_t)
1498                 (pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxdRingHead) -
1499                 pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxDescrRing +
1500                 pAC->TxPort[PortIndex][TX_PRIO_LOW].VTxDescrRing) &
1501                 0xFFFFFFFF));
1502         SK_OUT32(pAC->IoBase, TxQueueAddr[PortIndex][TX_PRIO_LOW]+
1503                 TX_Q_DESCR_HIGH,
1504                 (uint32_t)(((caddr_t)
1505                 (pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxdRingHead) -
1506                 pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxDescrRing +
1507                 pAC->TxPort[PortIndex][TX_PRIO_LOW].VTxDescrRing) >> 32));
1508         SK_OUT32(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_CUR_DESCR_LOW,
1509                 (uint32_t)(((caddr_t)(pAC->RxPort[PortIndex].pRxdRingHead) -
1510                 pAC->RxPort[PortIndex].pRxDescrRing +
1511                 pAC->RxPort[PortIndex].VRxDescrRing) & 0xFFFFFFFF));
1512         SK_OUT32(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_DESCR_HIGH,
1513                 (uint32_t)(((caddr_t)(pAC->RxPort[PortIndex].pRxdRingHead) -
1514                 pAC->RxPort[PortIndex].pRxDescrRing +
1515                 pAC->RxPort[PortIndex].VRxDescrRing) >> 32));
1516 } /* PortReInitBmu */
1517
1518
1519 /****************************************************************************
1520  *
1521  *      SkGeIsr - handle adapter interrupts
1522  *
1523  * Description:
1524  *      The interrupt routine is called when the network adapter
1525  *      generates an interrupt. It may also be called if another device
1526  *      shares this interrupt vector with the driver.
1527  *
1528  * Returns: N/A
1529  *
1530  */
1531 #if 0
1532 static void SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs)
1533 #else
1534 void SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs)
1535 #endif
1536 {
1537 struct SK_NET_DEVICE *dev = (struct SK_NET_DEVICE *)dev_id;
1538 DEV_NET         *pNet;
1539 SK_AC           *pAC;
1540 SK_U32          IntSrc;         /* interrupts source register contents */
1541
1542         pNet = (DEV_NET*) dev->priv;
1543         pAC = pNet->pAC;
1544
1545         /*
1546          * Check and process if its our interrupt
1547          */
1548         SK_IN32(pAC->IoBase, B0_SP_ISRC, &IntSrc);
1549         if (IntSrc == 0) {
1550                 return;
1551         }
1552
1553         while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
1554 #if 0 /* software irq currently not used */
1555                 if (IntSrc & IRQ_SW) {
1556                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1557                                 SK_DBGCAT_DRV_INT_SRC,
1558                                 ("Software IRQ\n"));
1559                 }
1560 #endif
1561                 if (IntSrc & IRQ_EOF_RX1) {
1562                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1563                                 SK_DBGCAT_DRV_INT_SRC,
1564                                 ("EOF RX1 IRQ\n"));
1565                         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1566                         SK_PNMI_CNT_RX_INTR(pAC, 0);
1567                 }
1568                 if (IntSrc & IRQ_EOF_RX2) {
1569                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1570                                 SK_DBGCAT_DRV_INT_SRC,
1571                                 ("EOF RX2 IRQ\n"));
1572                         ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
1573                         SK_PNMI_CNT_RX_INTR(pAC, 1);
1574                 }
1575 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1576                 if (IntSrc & IRQ_EOF_AS_TX1) {
1577                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1578                                 SK_DBGCAT_DRV_INT_SRC,
1579                                 ("EOF AS TX1 IRQ\n"));
1580                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1581                         spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1582                         FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
1583                         spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1584                 }
1585                 if (IntSrc & IRQ_EOF_AS_TX2) {
1586                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1587                                 SK_DBGCAT_DRV_INT_SRC,
1588                                 ("EOF AS TX2 IRQ\n"));
1589                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1590                         spin_lock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
1591                         FreeTxDescriptors(pAC, &pAC->TxPort[1][TX_PRIO_LOW]);
1592                         spin_unlock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
1593                 }
1594 #if 0 /* only if sync. queues used */
1595                 if (IntSrc & IRQ_EOF_SY_TX1) {
1596                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1597                                 SK_DBGCAT_DRV_INT_SRC,
1598                                 ("EOF SY TX1 IRQ\n"));
1599                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1600                         spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1601                         FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
1602                         spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1603                         ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
1604                 }
1605                 if (IntSrc & IRQ_EOF_SY_TX2) {
1606                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1607                                 SK_DBGCAT_DRV_INT_SRC,
1608                                 ("EOF SY TX2 IRQ\n"));
1609                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1610                         spin_lock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
1611                         FreeTxDescriptors(pAC, 1, TX_PRIO_HIGH);
1612                         spin_unlock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
1613                         ClearTxIrq(pAC, 1, TX_PRIO_HIGH);
1614                 }
1615 #endif
1616 #endif
1617
1618                 /* do all IO at once */
1619                 if (IntSrc & IRQ_EOF_RX1)
1620                         ClearAndStartRx(pAC, 0);
1621                 if (IntSrc & IRQ_EOF_RX2)
1622                         ClearAndStartRx(pAC, 1);
1623 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1624                 if (IntSrc & IRQ_EOF_AS_TX1)
1625                         ClearTxIrq(pAC, 0, TX_PRIO_LOW);
1626                 if (IntSrc & IRQ_EOF_AS_TX2)
1627                         ClearTxIrq(pAC, 1, TX_PRIO_LOW);
1628 #endif
1629                 SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
1630         } /* while (IntSrc & IRQ_MASK != 0) */
1631
1632         if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
1633                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
1634                         ("SPECIAL IRQ DP-Cards => %x\n", IntSrc));
1635                 pAC->CheckQueue = SK_FALSE;
1636                 spin_lock(&pAC->SlowPathLock);
1637                 if (IntSrc & SPECIAL_IRQS)
1638                         SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);
1639
1640                 SkEventDispatcher(pAC, pAC->IoBase);
1641                 spin_unlock(&pAC->SlowPathLock);
1642         }
1643         /*
1644          * do it all again is case we cleared an interrupt that
1645          * came in after handling the ring (OUTs may be delayed
1646          * in hardware buffers, but are through after IN)
1647          */
1648
1649         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1650         ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
1651
1652         if (pAC->CheckQueue) {
1653                 pAC->CheckQueue = SK_FALSE;
1654                 spin_lock(&pAC->SlowPathLock);
1655                 SkEventDispatcher(pAC, pAC->IoBase);
1656                 spin_unlock(&pAC->SlowPathLock);
1657         }
1658
1659
1660         /* IRQ is processed - Enable IRQs again*/
1661         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1662
1663         return;
1664 } /* SkGeIsr */
1665
1666
1667 /****************************************************************************
1668  *
1669  *      SkGeIsrOnePort - handle adapter interrupts for single port adapter
1670  *
1671  * Description:
1672  *      The interrupt routine is called when the network adapter
1673  *      generates an interrupt. It may also be called if another device
1674  *      shares this interrupt vector with the driver.
1675  *      This is the same as above, but handles only one port.
1676  *
1677  * Returns: N/A
1678  *
1679  */
1680 #if 0
1681 static void SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs)
1682 #else
1683 void SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs)
1684 #endif
1685 {
1686 struct SK_NET_DEVICE *dev = (struct SK_NET_DEVICE *)dev_id;
1687 DEV_NET         *pNet;
1688 SK_AC           *pAC;
1689 SK_U32          IntSrc;         /* interrupts source register contents */
1690
1691         pNet = (DEV_NET*) dev->priv;
1692         pAC = pNet->pAC;
1693
1694         /*
1695          * Check and process if its our interrupt
1696          */
1697         SK_IN32(pAC->IoBase, B0_SP_ISRC, &IntSrc);
1698         if (IntSrc == 0) {
1699                 return;
1700         }
1701
1702         while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
1703 #if 0 /* software irq currently not used */
1704                 if (IntSrc & IRQ_SW) {
1705                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1706                                 SK_DBGCAT_DRV_INT_SRC,
1707                                 ("Software IRQ\n"));
1708                 }
1709 #endif
1710                 if (IntSrc & IRQ_EOF_RX1) {
1711                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1712                                 SK_DBGCAT_DRV_INT_SRC,
1713                                 ("EOF RX1 IRQ\n"));
1714                         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1715                         SK_PNMI_CNT_RX_INTR(pAC, 0);
1716                 }
1717 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1718                 if (IntSrc & IRQ_EOF_AS_TX1) {
1719                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1720                                 SK_DBGCAT_DRV_INT_SRC,
1721                                 ("EOF AS TX1 IRQ\n"));
1722                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1723                         spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1724                         FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
1725                         spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1726                 }
1727 #if 0 /* only if sync. queues used */
1728                 if (IntSrc & IRQ_EOF_SY_TX1) {
1729                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1730                                 SK_DBGCAT_DRV_INT_SRC,
1731                                 ("EOF SY TX1 IRQ\n"));
1732                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1733                         spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1734                         FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
1735                         spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1736                         ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
1737                 }
1738 #endif
1739 #endif
1740
1741                 /* do all IO at once */
1742                 if (IntSrc & IRQ_EOF_RX1)
1743                         ClearAndStartRx(pAC, 0);
1744 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1745                 if (IntSrc & IRQ_EOF_AS_TX1)
1746                         ClearTxIrq(pAC, 0, TX_PRIO_LOW);
1747 #endif
1748                 SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
1749         } /* while (IntSrc & IRQ_MASK != 0) */
1750
1751         if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
1752                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
1753                         ("SPECIAL IRQ SP-Cards => %x\n", IntSrc));
1754                 pAC->CheckQueue = SK_FALSE;
1755                 spin_lock(&pAC->SlowPathLock);
1756                 if (IntSrc & SPECIAL_IRQS)
1757                         SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);
1758
1759                 SkEventDispatcher(pAC, pAC->IoBase);
1760                 spin_unlock(&pAC->SlowPathLock);
1761         }
1762         /*
1763          * do it all again is case we cleared an interrupt that
1764          * came in after handling the ring (OUTs may be delayed
1765          * in hardware buffers, but are through after IN)
1766          */
1767         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1768
1769         /* IRQ is processed - Enable IRQs again*/
1770         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1771
1772         return;
1773 } /* SkGeIsrOnePort */
1774
1775
1776 /****************************************************************************
1777  *
1778  *      SkGeOpen - handle start of initialized adapter
1779  *
1780  * Description:
1781  *      This function starts the initialized adapter.
1782  *      The board level variable is set and the adapter is
1783  *      brought to full functionality.
1784  *      The device flags are set for operation.
1785  *      Do all necessary level 2 initialization, enable interrupts and
1786  *      give start command to RLMT.
1787  *
1788  * Returns:
1789  *      0 on success
1790  *      != 0 on error
1791  */
1792 #if 0
1793 static int SkGeOpen(
1794 #else
1795 int SkGeOpen(
1796 #endif
1797 struct SK_NET_DEVICE    *dev)
1798 {
1799         DEV_NET                 *pNet;
1800         SK_AC                   *pAC;
1801         unsigned long   Flags;          /* for spin lock */
1802         int                             i;
1803         SK_EVPARA               EvPara;         /* an event parameter union */
1804
1805         pNet = (DEV_NET*) dev->priv;
1806         pAC = pNet->pAC;
1807
1808         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1809                 ("SkGeOpen: pAC=0x%lX:\n", (unsigned long)pAC));
1810
1811         if (pAC->BoardLevel == 0) {
1812                 /* level 1 init common modules here */
1813                 if (SkGeInit(pAC, pAC->IoBase, 1) != 0) {
1814                         printk("%s: HWInit (1) failed.\n", pAC->dev[pNet->PortNr]->name);
1815                         return (-1);
1816                 }
1817                 SkI2cInit       (pAC, pAC->IoBase, 1);
1818                 SkEventInit     (pAC, pAC->IoBase, 1);
1819                 SkPnmiInit      (pAC, pAC->IoBase, 1);
1820                 SkAddrInit      (pAC, pAC->IoBase, 1);
1821                 SkRlmtInit      (pAC, pAC->IoBase, 1);
1822                 SkTimerInit     (pAC, pAC->IoBase, 1);
1823                 pAC->BoardLevel = 1;
1824         }
1825
1826         if (pAC->BoardLevel != 2) {
1827                 /* tschilling: Level 2 init modules here, check return value. */
1828                 if (SkGeInit(pAC, pAC->IoBase, 2) != 0) {
1829                         printk("%s: HWInit (2) failed.\n", pAC->dev[pNet->PortNr]->name);
1830                         return (-1);
1831                 }
1832                 SkI2cInit       (pAC, pAC->IoBase, 2);
1833                 SkEventInit     (pAC, pAC->IoBase, 2);
1834                 SkPnmiInit      (pAC, pAC->IoBase, 2);
1835                 SkAddrInit      (pAC, pAC->IoBase, 2);
1836                 SkRlmtInit      (pAC, pAC->IoBase, 2);
1837                 SkTimerInit     (pAC, pAC->IoBase, 2);
1838                 pAC->BoardLevel = 2;
1839         }
1840
1841         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1842                 /* Enable transmit descriptor polling. */
1843                 SkGePollTxD(pAC, pAC->IoBase, i, SK_TRUE);
1844                 FillRxRing(pAC, &pAC->RxPort[i]);
1845         }
1846         SkGeYellowLED(pAC, pAC->IoBase, 1);
1847
1848 #ifdef USE_INT_MOD
1849 /* moderate only TX complete interrupts (these are not time critical) */
1850 #define IRQ_MOD_MASK (IRQ_EOF_AS_TX1 | IRQ_EOF_AS_TX2)
1851         {
1852                 unsigned long ModBase;
1853                 ModBase = 53125000 / INTS_PER_SEC;
1854                 SK_OUT32(pAC->IoBase, B2_IRQM_INI, ModBase);
1855                 SK_OUT32(pAC->IoBase, B2_IRQM_MSK, IRQ_MOD_MASK);
1856                 SK_OUT32(pAC->IoBase, B2_IRQM_CTRL, TIM_START);
1857         }
1858 #endif
1859
1860         /* enable Interrupts */
1861         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1862         SK_OUT32(pAC->IoBase, B0_HWE_IMSK, IRQ_HWE_MASK);
1863
1864         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1865
1866         if ((pAC->RlmtMode != 0) && (pAC->MaxPorts == 0)) {
1867                 EvPara.Para32[0] = pAC->RlmtNets;
1868                 EvPara.Para32[1] = -1;
1869                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_SET_NETS,
1870                         EvPara);
1871                 EvPara.Para32[0] = pAC->RlmtMode;
1872                 EvPara.Para32[1] = 0;
1873                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_MODE_CHANGE,
1874                         EvPara);
1875         }
1876
1877         EvPara.Para32[0] = pNet->NetNr;
1878         EvPara.Para32[1] = -1;
1879         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
1880         SkEventDispatcher(pAC, pAC->IoBase);
1881         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1882
1883         pAC->MaxPorts++;
1884         pNet->Up = 1;
1885
1886         MOD_INC_USE_COUNT;
1887
1888         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1889                 ("SkGeOpen suceeded\n"));
1890
1891         return (0);
1892 } /* SkGeOpen */
1893
1894
1895 /****************************************************************************
1896  *
1897  *      SkGeClose - Stop initialized adapter
1898  *
1899  * Description:
1900  *      Close initialized adapter.
1901  *
1902  * Returns:
1903  *      0 - on success
1904  *      error code - on error
1905  */
1906 #if 0
1907 static int SkGeClose(
1908 #else
1909 int SkGeClose(
1910 #endif
1911 struct SK_NET_DEVICE    *dev)
1912 {
1913         DEV_NET                 *pNet;
1914         SK_AC                   *pAC;
1915
1916         unsigned long   Flags;          /* for spin lock */
1917         int                             i;
1918         int                             PortIdx;
1919         SK_EVPARA               EvPara;
1920
1921         netif_stop_queue(dev);
1922         pNet = (DEV_NET*) dev->priv;
1923         pAC = pNet->pAC;
1924
1925         if (pAC->RlmtNets == 1)
1926                 PortIdx = pAC->ActivePort;
1927         else
1928                 PortIdx = pNet->NetNr;
1929
1930         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1931                 ("SkGeClose: pAC=0x%lX ", (unsigned long)pAC));
1932
1933         /*
1934          * Clear multicast table, promiscuous mode ....
1935          */
1936         SkAddrMcClear(pAC, pAC->IoBase, PortIdx, 0);
1937         SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
1938                 SK_PROM_MODE_NONE);
1939
1940         if (pAC->MaxPorts == 1) {
1941                 spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1942                 /* disable interrupts */
1943                 SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1944                 EvPara.Para32[0] = pNet->NetNr;
1945                 EvPara.Para32[1] = -1;
1946                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1947                 SkEventDispatcher(pAC, pAC->IoBase);
1948                 SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1949                 /* stop the hardware */
1950                 SkGeDeInit(pAC, pAC->IoBase);
1951                 pAC->BoardLevel = 0;
1952                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1953         } else {
1954
1955                 spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1956                 EvPara.Para32[0] = pNet->NetNr;
1957                 EvPara.Para32[1] = -1;
1958                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1959                 SkEventDispatcher(pAC, pAC->IoBase);
1960                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1961
1962                 /* Stop port */
1963                 spin_lock_irqsave(&pAC->TxPort[pNet->PortNr]
1964                         [TX_PRIO_LOW].TxDesRingLock, Flags);
1965                 SkGeStopPort(pAC, pAC->IoBase, pNet->PortNr,
1966                         SK_STOP_ALL, SK_HARD_RST);
1967                 spin_unlock_irqrestore(&pAC->TxPort[pNet->PortNr]
1968                         [TX_PRIO_LOW].TxDesRingLock, Flags);
1969         }
1970
1971         if (pAC->RlmtNets == 1) {
1972                 /* clear all descriptor rings */
1973                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1974                         ReceiveIrq(pAC, &pAC->RxPort[i], SK_TRUE);
1975                         ClearRxRing(pAC, &pAC->RxPort[i]);
1976                         ClearTxRing(pAC, &pAC->TxPort[i][TX_PRIO_LOW]);
1977                 }
1978         } else {
1979                 /* clear port descriptor rings */
1980                 ReceiveIrq(pAC, &pAC->RxPort[pNet->PortNr], SK_TRUE);
1981                 ClearRxRing(pAC, &pAC->RxPort[pNet->PortNr]);
1982                 ClearTxRing(pAC, &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW]);
1983         }
1984
1985         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1986                 ("SkGeClose: done "));
1987
1988         pAC->MaxPorts--;
1989         pNet->Up = 0;
1990         MOD_DEC_USE_COUNT;
1991
1992         return (0);
1993 } /* SkGeClose */
1994
1995
1996 /*****************************************************************************
1997  *
1998  *      SkGeXmit - Linux frame transmit function
1999  *
2000  * Description:
2001  *      The system calls this function to send frames onto the wire.
2002  *      It puts the frame in the tx descriptor ring. If the ring is
2003  *      full then, the 'tbusy' flag is set.
2004  *
2005  * Returns:
2006  *      0, if everything is ok
2007  *      !=0, on error
2008  * WARNING: returning 1 in 'tbusy' case caused system crashes (double
2009  *      allocated skb's) !!!
2010  */
2011 #if 0
2012 static int SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev)
2013 #else
2014 int SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev)
2015 #endif
2016 {
2017 DEV_NET         *pNet;
2018 SK_AC           *pAC;
2019 int                     Rc;     /* return code of XmitFrame */
2020
2021         pNet = (DEV_NET*) dev->priv;
2022         pAC = pNet->pAC;
2023
2024 #if 0
2025         if ((!skb_shinfo(skb)->nr_frags) ||
2026 #else
2027         if (1 ||
2028 #endif
2029                 (pAC->GIni.GIChipId == CHIP_ID_GENESIS)) {
2030                 /* Don't activate scatter-gather and hardware checksum */
2031
2032                 if (pAC->RlmtNets == 2)
2033                         Rc = XmitFrame(
2034                                 pAC,
2035                                 &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW],
2036                                 skb);
2037                 else
2038                         Rc = XmitFrame(
2039                                 pAC,
2040                                 &pAC->TxPort[pAC->ActivePort][TX_PRIO_LOW],
2041                                 skb);
2042         } else {
2043 #if 0
2044                 /* scatter-gather and hardware TCP checksumming anabled*/
2045                 if (pAC->RlmtNets == 2)
2046                         Rc = XmitFrameSG(
2047                                 pAC,
2048                                 &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW],
2049                                 skb);
2050                 else
2051                         Rc = XmitFrameSG(
2052                                 pAC,
2053                                 &pAC->TxPort[pAC->ActivePort][TX_PRIO_LOW],
2054                                 skb);
2055 #endif
2056         }
2057
2058         /* Transmitter out of resources? */
2059         if (Rc <= 0) {
2060                 netif_stop_queue(dev);
2061         }
2062
2063         /* If not taken, give buffer ownership back to the
2064          * queueing layer.
2065          */
2066         if (Rc < 0)
2067                 return (1);
2068
2069 #if 0
2070         dev->trans_start = jiffies;
2071 #endif
2072         return (0);
2073 } /* SkGeXmit */
2074
2075
2076 /*****************************************************************************
2077  *
2078  *      XmitFrame - fill one socket buffer into the transmit ring
2079  *
2080  * Description:
2081  *      This function puts a message into the transmit descriptor ring
2082  *      if there is a descriptors left.
2083  *      Linux skb's consist of only one continuous buffer.
2084  *      The first step locks the ring. It is held locked
2085  *      all time to avoid problems with SWITCH_../PORT_RESET.
2086  *      Then the descriptoris allocated.
2087  *      The second part is linking the buffer to the descriptor.
2088  *      At the very last, the Control field of the descriptor
2089  *      is made valid for the BMU and a start TX command is given
2090  *      if necessary.
2091  *
2092  * Returns:
2093  *      > 0 - on succes: the number of bytes in the message
2094  *      = 0 - on resource shortage: this frame sent or dropped, now
2095  *              the ring is full ( -> set tbusy)
2096  *      < 0 - on failure: other problems ( -> return failure to upper layers)
2097  */
2098 static int XmitFrame(
2099 SK_AC           *pAC,           /* pointer to adapter context */
2100 TX_PORT         *pTxPort,       /* pointer to struct of port to send to */
2101 struct sk_buff  *pMessage)      /* pointer to send-message */
2102 {
2103 TXD             *pTxd;          /* the rxd to fill */
2104 unsigned long   Flags;
2105 SK_U64          PhysAddr;
2106 int             BytesSend;
2107
2108         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
2109                 ("X"));
2110
2111         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
2112 #ifndef USE_TX_COMPLETE
2113         FreeTxDescriptors(pAC, pTxPort);
2114 #endif
2115         if (pTxPort->TxdRingFree == 0) {
2116                 /* no enough free descriptors in ring at the moment */
2117                 FreeTxDescriptors(pAC, pTxPort);
2118                 if (pTxPort->TxdRingFree == 0) {
2119                         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2120                         SK_PNMI_CNT_NO_TX_BUF(pAC, pTxPort->PortIndex);
2121                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2122                                 SK_DBGCAT_DRV_TX_PROGRESS,
2123                                 ("XmitFrame failed\n"));
2124                         /* this message can not be sent now */
2125                         /* Because tbusy seems to be set, the message should not be freed here */
2126                         /* It will be used by the scheduler of the ethernet handler */
2127                         return (-1);
2128                 }
2129         }
2130         /* advance head counter behind descriptor needed for this frame */
2131         pTxd = pTxPort->pTxdRingHead;
2132         pTxPort->pTxdRingHead = pTxd->pNextTxd;
2133         pTxPort->TxdRingFree--;
2134         /* the needed descriptor is reserved now */
2135
2136         /*
2137          * everything allocated ok, so add buffer to descriptor
2138          */
2139
2140 #ifdef SK_DUMP_TX
2141         DumpMsg(pMessage, "XmitFrame");
2142 #endif
2143
2144         /* set up descriptor and CONTROL dword */
2145 #if 0
2146         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2147                 virt_to_page(pMessage->data),
2148                 ((unsigned long) pMessage->data &
2149                 ~PAGE_MASK),
2150                 pMessage->len,
2151                 PCI_DMA_TODEVICE);
2152 #else
2153         PhysAddr = (SK_U64) pci_phys_to_mem(pAC->PciDev, (u32) pMessage->data);
2154 #endif
2155         pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2156         pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2157         pTxd->pMBuf = pMessage;
2158         pTxd->TBControl = TX_CTRL_OWN_BMU | TX_CTRL_STF |
2159                 TX_CTRL_CHECK_DEFAULT | TX_CTRL_SOFTWARE |
2160 #ifdef USE_TX_COMPLETE
2161                 TX_CTRL_EOF | TX_CTRL_EOF_IRQ | pMessage->len;
2162 #else
2163                 TX_CTRL_EOF | pMessage->len;
2164 #endif
2165
2166         if ((pTxPort->pTxdRingPrev->TBControl & TX_CTRL_OWN_BMU) == 0) {
2167                 /* previous descriptor already done, so give tx start cmd */
2168                 /* StartTx(pAC, pTxPort->HwAddr); */
2169                 SK_OUT8(pTxPort->HwAddr, TX_Q_CTRL, TX_Q_CTRL_START);
2170         }
2171         pTxPort->pTxdRingPrev = pTxd;
2172
2173
2174         BytesSend = pMessage->len;
2175         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2176         /* after releasing the lock, the skb may be immidiately freed */
2177         if (pTxPort->TxdRingFree != 0)
2178                 return (BytesSend);
2179         else
2180                 return (0);
2181
2182 } /* XmitFrame */
2183
2184 /*****************************************************************************
2185  *
2186  *      XmitFrameSG - fill one socket buffer into the transmit ring
2187  *                (use SG and TCP/UDP hardware checksumming)
2188  *
2189  * Description:
2190  *      This function puts a message into the transmit descriptor ring
2191  *      if there is a descriptors left.
2192  *
2193  * Returns:
2194  *      > 0 - on succes: the number of bytes in the message
2195  *      = 0 - on resource shortage: this frame sent or dropped, now
2196  *              the ring is full ( -> set tbusy)
2197  *      < 0 - on failure: other problems ( -> return failure to upper layers)
2198  */
2199 #if 0
2200 static int XmitFrameSG(
2201 SK_AC           *pAC,                   /* pointer to adapter context */
2202 TX_PORT         *pTxPort,               /* pointer to struct of port to send to */
2203 struct sk_buff  *pMessage)      /* pointer to send-message */
2204 {
2205
2206         int             i;
2207         int                     BytesSend;
2208         int                     hlength;
2209         int                     protocol;
2210         skb_frag_t              *sk_frag;
2211         TXD                     *pTxd;
2212         TXD                     *pTxdFst;
2213         TXD                     *pTxdLst;
2214         SK_U64          PhysAddr;
2215         unsigned long   Flags;
2216
2217         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
2218 #ifndef USE_TX_COMPLETE
2219         FreeTxDescriptors(pAC, pTxPort);
2220 #endif
2221         if ((skb_shinfo(pMessage)->nr_frags +1) > pTxPort->TxdRingFree) {
2222                 FreeTxDescriptors(pAC, pTxPort);
2223                 if ((skb_shinfo(pMessage)->nr_frags + 1) > pTxPort->TxdRingFree) {
2224                         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2225                         SK_PNMI_CNT_NO_TX_BUF(pAC, pTxPort->PortIndex);
2226                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2227                                 SK_DBGCAT_DRV_TX_PROGRESS,
2228                                 ("XmitFrameSG failed - Ring full\n"));
2229                                 /* this message can not be sent now */
2230                         return(-1);
2231                 }
2232         }
2233
2234
2235         pTxd = pTxPort->pTxdRingHead;
2236         pTxdFst = pTxd;
2237         pTxdLst = pTxd;
2238         BytesSend = 0;
2239         protocol = 0;
2240
2241         /* map first fragment (header) */
2242         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2243                         virt_to_page(pMessage->data),
2244                         ((unsigned long) pMessage->data & ~PAGE_MASK),
2245                         skb_headlen(pMessage),
2246                         PCI_DMA_TODEVICE);
2247
2248         pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2249         pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2250
2251         /* HW checksum? */
2252         if (pMessage->ip_summed == CHECKSUM_HW) {
2253                 pTxd->TBControl = TX_CTRL_STF |
2254                                   TX_CTRL_ST_FWD |
2255                                   skb_headlen(pMessage);
2256
2257                 /* We have to use the opcode for tcp here because the opcode for
2258                 udp is not working in the hardware yet (revision 2.0)*/
2259                 protocol = ((SK_U8)pMessage->data[23] & 0xf);
2260                 if ((protocol == 17) && (pAC->GIni.GIChipRev != 0))
2261                         pTxd->TBControl |=  BMU_UDP_CHECK;
2262                 else
2263                         pTxd->TBControl |= BMU_TCP_CHECK ;
2264
2265                 hlength = ((SK_U8)pMessage->data[14] & 0xf) * 4;
2266                 pTxd->TcpSumOfs = 0; /* PH-Checksum already claculated */
2267                 pTxd->TcpSumSt = 14+hlength+16;
2268                 pTxd->TcpSumWr = 14+hlength;
2269
2270         } else {
2271                 pTxd->TBControl = TX_CTRL_CHECK_DEFAULT |
2272                                   TX_CTRL_SOFTWARE |
2273                                   TX_CTRL_STF |
2274                                   skb_headlen(pMessage);
2275         }
2276
2277         pTxd = pTxd->pNextTxd;
2278         pTxPort->TxdRingFree--;
2279         BytesSend += skb_headlen(pMessage);
2280
2281
2282         /* Map SG fragments */
2283         for (i = 0; i < skb_shinfo(pMessage)->nr_frags; i++) {
2284                 sk_frag = &skb_shinfo(pMessage)->frags[i];
2285
2286                 /* we already have the proper value in entry */
2287                 PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2288                                                  sk_frag->page,
2289                                                  sk_frag->page_offset,
2290                                                  sk_frag->size,
2291                                                  PCI_DMA_TODEVICE);
2292
2293                 pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2294                 pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2295                 pTxd->pMBuf = pMessage;
2296
2297                 /* HW checksum */
2298                 if (pMessage->ip_summed == CHECKSUM_HW) {
2299                         pTxd->TBControl = TX_CTRL_OWN_BMU |
2300                                           TX_CTRL_SOFTWARE |
2301                                           TX_CTRL_ST_FWD;
2302
2303                         /* We have to use the opcode for tcp here because the opcode for
2304                         udp is not working in the hardware yet (revision 2.0)*/
2305                         if ((protocol == 17) && (pAC->GIni.GIChipRev != 0))
2306                                 pTxd->TBControl |= BMU_UDP_CHECK ;
2307                         else
2308                                 pTxd->TBControl |= BMU_TCP_CHECK ;
2309
2310                 } else {
2311                         pTxd->TBControl = TX_CTRL_CHECK_DEFAULT |
2312                                           TX_CTRL_SOFTWARE |
2313                                           TX_CTRL_OWN_BMU;
2314                 }
2315
2316                 /* Last fragment  */
2317                 if( (i+1) == skb_shinfo(pMessage)->nr_frags )  {
2318 #ifdef USE_TX_COMPLETE
2319                         pTxd->TBControl |= TX_CTRL_EOF |
2320                                            TX_CTRL_EOF_IRQ |
2321                                            sk_frag->size;
2322 #else
2323                         pTxd->TBControl |= TX_CTRL_EOF |
2324                                            sk_frag->size;
2325 #endif
2326                         pTxdFst->TBControl |= TX_CTRL_OWN_BMU |
2327                                               TX_CTRL_SOFTWARE;
2328
2329                 } else {
2330                         pTxd->TBControl |= sk_frag->size;
2331                 }
2332                 pTxdLst = pTxd;
2333                 pTxd = pTxd->pNextTxd;
2334                 pTxPort->TxdRingFree--;
2335                 BytesSend += sk_frag->size;
2336         }
2337
2338         if ((pTxPort->pTxdRingPrev->TBControl & TX_CTRL_OWN_BMU) == 0) {
2339                 /* previous descriptor already done, so give tx start cmd */
2340                 /* StartTx(pAC, pTxPort->HwAddr); */
2341                 SK_OUT8(pTxPort->HwAddr, TX_Q_CTRL, TX_Q_CTRL_START);
2342         }
2343
2344         pTxPort->pTxdRingPrev = pTxdLst;
2345         pTxPort->pTxdRingHead = pTxd;
2346
2347         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2348
2349         if (pTxPort->TxdRingFree > 0)
2350                 return (BytesSend);
2351         else
2352                 return (0);
2353 }
2354 #endif
2355
2356
2357 void dump_frag( SK_U8 *data, int length)
2358 {
2359         int i;
2360
2361         printk("Length: %d\n", length);
2362         for( i=0; i < length; i++ ) {
2363                 printk(" %02x", (SK_U8)*(data + i) );
2364                 if( !((i+1) % 20) )
2365                   printk("\n");
2366         }
2367         printk("\n\n");
2368
2369 }
2370
2371
2372 /*****************************************************************************
2373  *
2374  *      FreeTxDescriptors - release descriptors from the descriptor ring
2375  *
2376  * Description:
2377  *      This function releases descriptors from a transmit ring if they
2378  *      have been sent by the BMU.
2379  *      If a descriptors is sent, it can be freed and the message can
2380  *      be freed, too.
2381  *      The SOFTWARE controllable bit is used to prevent running around a
2382  *      completely free ring for ever. If this bit is no set in the
2383  *      frame (by XmitFrame), this frame has never been sent or is
2384  *      already freed.
2385  *      The Tx descriptor ring lock must be held while calling this function !!!
2386  *
2387  * Returns:
2388  *      none
2389  */
2390 static void FreeTxDescriptors(
2391 SK_AC   *pAC,           /* pointer to the adapter context */
2392 TX_PORT *pTxPort)       /* pointer to destination port structure */
2393 {
2394 TXD     *pTxd;          /* pointer to the checked descriptor */
2395 TXD     *pNewTail;      /* pointer to 'end' of the ring */
2396 SK_U32  Control;        /* TBControl field of descriptor */
2397 SK_U64  PhysAddr;       /* address of DMA mapping */
2398
2399         pNewTail = pTxPort->pTxdRingTail;
2400         pTxd = pNewTail;
2401         /*
2402          * loop forever; exits if TX_CTRL_SOFTWARE bit not set in start frame
2403          * or TX_CTRL_OWN_BMU bit set in any frame
2404          */
2405         while (1) {
2406                 Control = pTxd->TBControl;
2407                 if ((Control & TX_CTRL_SOFTWARE) == 0) {
2408                         /*
2409                          * software controllable bit is set in first
2410                          * fragment when given to BMU. Not set means that
2411                          * this fragment was never sent or is already
2412                          * freed ( -> ring completely free now).
2413                          */
2414                         pTxPort->pTxdRingTail = pTxd;
2415                         netif_wake_queue(pAC->dev[pTxPort->PortIndex]);
2416                         return;
2417                 }
2418                 if (Control & TX_CTRL_OWN_BMU) {
2419                         pTxPort->pTxdRingTail = pTxd;
2420                         if (pTxPort->TxdRingFree > 0) {
2421                                 netif_wake_queue(pAC->dev[pTxPort->PortIndex]);
2422                         }
2423                         return;
2424                 }
2425
2426                 /* release the DMA mapping */
2427                 PhysAddr = ((SK_U64) pTxd->VDataHigh) << (SK_U64) 32;
2428                 PhysAddr |= (SK_U64) pTxd->VDataLow;
2429                 pci_unmap_page(pAC->PciDev, PhysAddr,
2430                                  pTxd->pMBuf->len,
2431                                  PCI_DMA_TODEVICE);
2432
2433                 if (Control & TX_CTRL_EOF)
2434                         DEV_KFREE_SKB_ANY(pTxd->pMBuf); /* free message */
2435
2436                 pTxPort->TxdRingFree++;
2437                 pTxd->TBControl &= ~TX_CTRL_SOFTWARE;
2438                 pTxd = pTxd->pNextTxd; /* point behind fragment with EOF */
2439         } /* while(forever) */
2440 } /* FreeTxDescriptors */
2441
2442 /*****************************************************************************
2443  *
2444  *      FillRxRing - fill the receive ring with valid descriptors
2445  *
2446  * Description:
2447  *      This function fills the receive ring descriptors with data
2448  *      segments and makes them valid for the BMU.
2449  *      The active ring is filled completely, if possible.
2450  *      The non-active ring is filled only partial to save memory.
2451  *
2452  * Description of rx ring structure:
2453  *      head - points to the descriptor which will be used next by the BMU
2454  *      tail - points to the next descriptor to give to the BMU
2455  *
2456  * Returns:     N/A
2457  */
2458 static void FillRxRing(
2459 SK_AC           *pAC,           /* pointer to the adapter context */
2460 RX_PORT         *pRxPort)       /* ptr to port struct for which the ring
2461                                    should be filled */
2462 {
2463 unsigned long   Flags;
2464
2465         spin_lock_irqsave(&pRxPort->RxDesRingLock, Flags);
2466         while (pRxPort->RxdRingFree > pRxPort->RxFillLimit) {
2467                 if(!FillRxDescriptor(pAC, pRxPort))
2468                         break;
2469         }
2470         spin_unlock_irqrestore(&pRxPort->RxDesRingLock, Flags);
2471 } /* FillRxRing */
2472
2473
2474 /*****************************************************************************
2475  *
2476  *      FillRxDescriptor - fill one buffer into the receive ring
2477  *
2478  * Description:
2479  *      The function allocates a new receive buffer and
2480  *      puts it into the next descriptor.
2481  *
2482  * Returns:
2483  *      SK_TRUE - a buffer was added to the ring
2484  *      SK_FALSE - a buffer could not be added
2485  */
2486 static SK_BOOL FillRxDescriptor(
2487 SK_AC           *pAC,           /* pointer to the adapter context struct */
2488 RX_PORT         *pRxPort)       /* ptr to port struct of ring to fill */
2489 {
2490 struct sk_buff  *pMsgBlock;     /* pointer to a new message block */
2491 RXD             *pRxd;          /* the rxd to fill */
2492 SK_U16          Length;         /* data fragment length */
2493 SK_U64          PhysAddr;       /* physical address of a rx buffer */
2494
2495         pMsgBlock = alloc_skb(pAC->RxBufSize, GFP_ATOMIC);
2496         if (pMsgBlock == NULL) {
2497                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2498                         SK_DBGCAT_DRV_ENTRY,
2499                         ("%s: Allocation of rx buffer failed !\n",
2500                         pAC->dev[pRxPort->PortIndex]->name));
2501                 SK_PNMI_CNT_NO_RX_BUF(pAC, pRxPort->PortIndex);
2502                 return(SK_FALSE);
2503         }
2504         skb_reserve(pMsgBlock, 2); /* to align IP frames */
2505         /* skb allocated ok, so add buffer */
2506         pRxd = pRxPort->pRxdRingTail;
2507         pRxPort->pRxdRingTail = pRxd->pNextRxd;
2508         pRxPort->RxdRingFree--;
2509         Length = pAC->RxBufSize;
2510 #if 0
2511         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2512                 virt_to_page(pMsgBlock->data),
2513                 ((unsigned long) pMsgBlock->data &
2514                 ~PAGE_MASK),
2515                 pAC->RxBufSize - 2,
2516                 PCI_DMA_FROMDEVICE);
2517 #else
2518         PhysAddr = (SK_U64) pci_phys_to_mem(pAC->PciDev, (u32)pMsgBlock->data);
2519 #endif
2520         pRxd->VDataLow = (SK_U32) (PhysAddr & 0xffffffff);
2521         pRxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2522         pRxd->pMBuf = pMsgBlock;
2523         pRxd->RBControl = RX_CTRL_OWN_BMU | RX_CTRL_STF |
2524                 RX_CTRL_EOF_IRQ | RX_CTRL_CHECK_CSUM | Length;
2525         return (SK_TRUE);
2526
2527 } /* FillRxDescriptor */
2528
2529
2530 /*****************************************************************************
2531  *
2532  *      ReQueueRxBuffer - fill one buffer back into the receive ring
2533  *
2534  * Description:
2535  *      Fill a given buffer back into the rx ring. The buffer
2536  *      has been previously allocated and aligned, and its phys.
2537  *      address calculated, so this is no more necessary.
2538  *
2539  * Returns: N/A
2540  */
2541 static void ReQueueRxBuffer(
2542 SK_AC           *pAC,           /* pointer to the adapter context struct */
2543 RX_PORT         *pRxPort,       /* ptr to port struct of ring to fill */
2544 struct sk_buff  *pMsg,          /* pointer to the buffer */
2545 SK_U32          PhysHigh,       /* phys address high dword */
2546 SK_U32          PhysLow)        /* phys address low dword */
2547 {
2548 RXD             *pRxd;          /* the rxd to fill */
2549 SK_U16          Length;         /* data fragment length */
2550
2551         pRxd = pRxPort->pRxdRingTail;
2552         pRxPort->pRxdRingTail = pRxd->pNextRxd;
2553         pRxPort->RxdRingFree--;
2554         Length = pAC->RxBufSize;
2555         pRxd->VDataLow = PhysLow;
2556         pRxd->VDataHigh = PhysHigh;
2557         pRxd->pMBuf = pMsg;
2558         pRxd->RBControl = RX_CTRL_OWN_BMU | RX_CTRL_STF |
2559                 RX_CTRL_EOF_IRQ | RX_CTRL_CHECK_CSUM | Length;
2560         return;
2561 } /* ReQueueRxBuffer */
2562
2563
2564 /*****************************************************************************
2565  *
2566  *      ReceiveIrq - handle a receive IRQ
2567  *
2568  * Description:
2569  *      This function is called when a receive IRQ is set.
2570  *      It walks the receive descriptor ring and sends up all
2571  *      frames that are complete.
2572  *
2573  * Returns:     N/A
2574  */
2575 #if 0
2576 static void ReceiveIrq(
2577 #else
2578 void ReceiveIrq(
2579 #endif
2580         SK_AC           *pAC,                   /* pointer to adapter context */
2581         RX_PORT         *pRxPort,               /* pointer to receive port struct */
2582         SK_BOOL         SlowPathLock)   /* indicates if SlowPathLock is needed */
2583 {
2584 RXD                             *pRxd;                  /* pointer to receive descriptors */
2585 SK_U32                  Control;                /* control field of descriptor */
2586 struct sk_buff  *pMsg;                  /* pointer to message holding frame */
2587 struct sk_buff  *pNewMsg;               /* pointer to a new message for copying frame */
2588 int                             FrameLength;    /* total length of received frame */
2589 SK_MBUF                 *pRlmtMbuf;             /* ptr to a buffer for giving a frame to rlmt */
2590 SK_EVPARA               EvPara;                 /* an event parameter union */
2591 unsigned long   Flags;                  /* for spin lock */
2592 int                             PortIndex = pRxPort->PortIndex;
2593 unsigned int    Offset;
2594 unsigned int    NumBytes;
2595 unsigned int    ForRlmt;
2596 SK_BOOL                 IsBc;
2597 SK_BOOL                 IsMc;
2598 SK_BOOL  IsBadFrame;                    /* Bad frame */
2599
2600 SK_U32                  FrameStat;
2601 unsigned short  Csum1;
2602 unsigned short  Csum2;
2603 unsigned short  Type;
2604 #if 0
2605 int                             Result;
2606 #endif
2607 SK_U64                  PhysAddr;
2608
2609 rx_start:
2610         /* do forever; exit if RX_CTRL_OWN_BMU found */
2611         for ( pRxd = pRxPort->pRxdRingHead ;
2612                   pRxPort->RxdRingFree < pAC->RxDescrPerRing ;
2613                   pRxd = pRxd->pNextRxd,
2614                   pRxPort->pRxdRingHead = pRxd,
2615                   pRxPort->RxdRingFree ++) {
2616
2617                 /*
2618                  * For a better understanding of this loop
2619                  * Go through every descriptor beginning at the head
2620                  * Please note: the ring might be completely received so the OWN bit
2621                  * set is not a good crirteria to leave that loop.
2622                  * Therefore the RingFree counter is used.
2623                  * On entry of this loop pRxd is a pointer to the Rxd that needs
2624                  * to be checked next.
2625                  */
2626
2627                 Control = pRxd->RBControl;
2628
2629                 /* check if this descriptor is ready */
2630                 if ((Control & RX_CTRL_OWN_BMU) != 0) {
2631                         /* this descriptor is not yet ready */
2632                         /* This is the usual end of the loop */
2633                         /* We don't need to start the ring again */
2634                         FillRxRing(pAC, pRxPort);
2635                         return;
2636                 }
2637
2638                 /* get length of frame and check it */
2639                 FrameLength = Control & RX_CTRL_LEN_MASK;
2640                 if (FrameLength > pAC->RxBufSize) {
2641                         goto rx_failed;
2642                 }
2643
2644                 /* check for STF and EOF */
2645                 if ((Control & (RX_CTRL_STF | RX_CTRL_EOF)) !=
2646                         (RX_CTRL_STF | RX_CTRL_EOF)) {
2647                         goto rx_failed;
2648                 }
2649
2650                 /* here we have a complete frame in the ring */
2651                 pMsg = pRxd->pMBuf;
2652
2653                 FrameStat = pRxd->FrameStat;
2654
2655                 /* check for frame length mismatch */
2656 #define XMR_FS_LEN_SHIFT        18
2657 #define GMR_FS_LEN_SHIFT        16
2658                 if (pAC->GIni.GIChipId == CHIP_ID_GENESIS) {
2659                         if (FrameLength != (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)) {
2660                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2661                                         SK_DBGCAT_DRV_RX_PROGRESS,
2662                                         ("skge: Frame length mismatch (%u/%u).\n",
2663                                         FrameLength,
2664                                         (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)));
2665                                 goto rx_failed;
2666                         }
2667                 }
2668                 else {
2669                         if (FrameLength != (SK_U32) (FrameStat >> GMR_FS_LEN_SHIFT)) {
2670                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2671                                         SK_DBGCAT_DRV_RX_PROGRESS,
2672                                         ("skge: Frame length mismatch (%u/%u).\n",
2673                                         FrameLength,
2674                                         (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)));
2675                                 goto rx_failed;
2676                         }
2677                 }
2678
2679                 /* Set Rx Status */
2680                 if (pAC->GIni.GIChipId == CHIP_ID_GENESIS) {
2681                         IsBc = (FrameStat & XMR_FS_BC) != 0;
2682                         IsMc = (FrameStat & XMR_FS_MC) != 0;
2683                         IsBadFrame = (FrameStat &
2684                                 (XMR_FS_ANY_ERR | XMR_FS_2L_VLAN)) != 0;
2685                 } else {
2686                         IsBc = (FrameStat & GMR_FS_BC) != 0;
2687                         IsMc = (FrameStat & GMR_FS_MC) != 0;
2688                         IsBadFrame = (((FrameStat & GMR_FS_ANY_ERR) != 0) ||
2689                                                         ((FrameStat & GMR_FS_RX_OK) == 0));
2690                 }
2691
2692                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 0,
2693                         ("Received frame of length %d on port %d\n",
2694                         FrameLength, PortIndex));
2695                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 0,
2696                         ("Number of free rx descriptors: %d\n",
2697                         pRxPort->RxdRingFree));
2698 /* DumpMsg(pMsg, "Rx"); */
2699
2700                 if ((Control & RX_CTRL_STAT_VALID) != RX_CTRL_STAT_VALID ||
2701                         (IsBadFrame)) {
2702 #if 0
2703                         (FrameStat & (XMR_FS_ANY_ERR | XMR_FS_2L_VLAN)) != 0) {
2704 #endif
2705                         /* there is a receive error in this frame */
2706                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2707                                 SK_DBGCAT_DRV_RX_PROGRESS,
2708                                 ("skge: Error in received frame, dropped!\n"
2709                                 "Control: %x\nRxStat: %x\n",
2710                                 Control, FrameStat));
2711
2712                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2713                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2714                         pci_dma_sync_single(pAC->PciDev,
2715                                                 (dma_addr_t) PhysAddr,
2716                                                 FrameLength,
2717                                                 PCI_DMA_FROMDEVICE);
2718                         ReQueueRxBuffer(pAC, pRxPort, pMsg,
2719                                 pRxd->VDataHigh, pRxd->VDataLow);
2720
2721                         continue;
2722                 }
2723
2724                 /*
2725                  * if short frame then copy data to reduce memory waste
2726                  */
2727                 if ((FrameLength < SK_COPY_THRESHOLD) &&
2728                         ((pNewMsg = alloc_skb(FrameLength+2, GFP_ATOMIC)) != NULL)) {
2729                         /*
2730                          * Short frame detected and allocation successfull
2731                          */
2732                         /* use new skb and copy data */
2733                         skb_reserve(pNewMsg, 2);
2734                         skb_put(pNewMsg, FrameLength);
2735                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2736                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2737
2738                         pci_dma_sync_single(pAC->PciDev,
2739                                                 (dma_addr_t) PhysAddr,
2740                                                 FrameLength,
2741                                                 PCI_DMA_FROMDEVICE);
2742                         eth_copy_and_sum(pNewMsg, pMsg->data,
2743                                 FrameLength, 0);
2744                         ReQueueRxBuffer(pAC, pRxPort, pMsg,
2745                                 pRxd->VDataHigh, pRxd->VDataLow);
2746                         pMsg = pNewMsg;
2747
2748                 }
2749                 else {
2750                         /*
2751                          * if large frame, or SKB allocation failed, pass
2752                          * the SKB directly to the networking
2753                          */
2754
2755                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2756                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2757
2758                         /* release the DMA mapping */
2759                         pci_unmap_single(pAC->PciDev,
2760                                          PhysAddr,
2761                                          pAC->RxBufSize - 2,
2762                                          PCI_DMA_FROMDEVICE);
2763
2764                         /* set length in message */
2765                         skb_put(pMsg, FrameLength);
2766                         /* hardware checksum */
2767                         Type = ntohs(*((short*)&pMsg->data[12]));
2768                         if (Type == 0x800) {
2769                                 Csum1=le16_to_cpu(pRxd->TcpSums & 0xffff);
2770                                 Csum2=le16_to_cpu((pRxd->TcpSums >> 16) & 0xffff);
2771 #if 0
2772                                 if ((((Csum1 & 0xfffe) && (Csum2 & 0xfffe)) &&
2773                                         (pAC->GIni.GIChipId == CHIP_ID_GENESIS)) ||
2774                                         (pAC->GIni.GIChipId == CHIP_ID_YUKON)) {
2775                                         Result = SkCsGetReceiveInfo(pAC,
2776                                                 &pMsg->data[14],
2777                                                 Csum1, Csum2, pRxPort->PortIndex);
2778                                         if (Result ==
2779                                                 SKCS_STATUS_IP_FRAGMENT ||
2780                                                 Result ==
2781                                                 SKCS_STATUS_IP_CSUM_OK ||
2782                                                 Result ==
2783                                                 SKCS_STATUS_TCP_CSUM_OK ||
2784                                                 Result ==
2785                                                 SKCS_STATUS_UDP_CSUM_OK) {
2786                                                         pMsg->ip_summed =
2787                                                         CHECKSUM_UNNECESSARY;
2788                                         } else {
2789                                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2790                                                 SK_DBGCAT_DRV_RX_PROGRESS,
2791                                                 ("skge: CRC error. Frame dropped!\n"));
2792                                                 goto rx_failed;
2793                                         }
2794                                 }/* checksumControl calculation valid */
2795 #endif
2796                         } /* IP frame */
2797                 } /* frame > SK_COPY_TRESHOLD */
2798
2799                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("V"));
2800                 ForRlmt = SK_RLMT_RX_PROTOCOL;
2801 #if 0
2802                 IsBc = (FrameStat & XMR_FS_BC)==XMR_FS_BC;
2803 #endif
2804                 SK_RLMT_PRE_LOOKAHEAD(pAC, PortIndex, FrameLength,
2805                         IsBc, &Offset, &NumBytes);
2806                 if (NumBytes != 0) {
2807 #if 0
2808                         IsMc = (FrameStat & XMR_FS_MC)==XMR_FS_MC;
2809 #endif
2810                         SK_RLMT_LOOKAHEAD(pAC, PortIndex,
2811                                 &pMsg->data[Offset],
2812                                 IsBc, IsMc, &ForRlmt);
2813                 }
2814                 if (ForRlmt == SK_RLMT_RX_PROTOCOL) {
2815                                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("W"));
2816                         /* send up only frames from active port */
2817                         if ((PortIndex == pAC->ActivePort) ||
2818                                 (pAC->RlmtNets == 2)) {
2819                                 /* frame for upper layer */
2820                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("U"));
2821 #ifdef xDEBUG
2822                                 DumpMsg(pMsg, "Rx");
2823 #endif
2824                                 SK_PNMI_CNT_RX_OCTETS_DELIVERED(pAC,
2825                                         FrameLength, pRxPort->PortIndex);
2826
2827 #if 0
2828                                 pMsg->dev = pAC->dev[pRxPort->PortIndex];
2829                                 pMsg->protocol = eth_type_trans(pMsg,
2830                                         pAC->dev[pRxPort->PortIndex]);
2831                                 netif_rx(pMsg);
2832                                 pAC->dev[pRxPort->PortIndex]->last_rx = jiffies;
2833 #else
2834                                 NetReceive(pMsg->data, pMsg->len);
2835                                 dev_kfree_skb_any(pMsg);
2836 #endif
2837                         }
2838                         else {
2839                                 /* drop frame */
2840                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2841                                         SK_DBGCAT_DRV_RX_PROGRESS,
2842                                         ("D"));
2843                                 DEV_KFREE_SKB(pMsg);
2844                         }
2845
2846                 } /* if not for rlmt */
2847                 else {
2848                         /* packet for rlmt */
2849                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2850                                 SK_DBGCAT_DRV_RX_PROGRESS, ("R"));
2851                         pRlmtMbuf = SkDrvAllocRlmtMbuf(pAC,
2852                                 pAC->IoBase, FrameLength);
2853                         if (pRlmtMbuf != NULL) {
2854                                 pRlmtMbuf->pNext = NULL;
2855                                 pRlmtMbuf->Length = FrameLength;
2856                                 pRlmtMbuf->PortIdx = PortIndex;
2857                                 EvPara.pParaPtr = pRlmtMbuf;
2858                                 memcpy((char*)(pRlmtMbuf->pData),
2859                                            (char*)(pMsg->data),
2860                                            FrameLength);
2861
2862                                 /* SlowPathLock needed? */
2863                                 if (SlowPathLock == SK_TRUE) {
2864                                         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
2865                                         SkEventQueue(pAC, SKGE_RLMT,
2866                                                 SK_RLMT_PACKET_RECEIVED,
2867                                                 EvPara);
2868                                         pAC->CheckQueue = SK_TRUE;
2869                                         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
2870                                 } else {
2871                                         SkEventQueue(pAC, SKGE_RLMT,
2872                                                 SK_RLMT_PACKET_RECEIVED,
2873                                                 EvPara);
2874                                         pAC->CheckQueue = SK_TRUE;
2875                                 }
2876
2877                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2878                                         SK_DBGCAT_DRV_RX_PROGRESS,
2879                                         ("Q"));
2880                         }
2881 #if 0
2882                         if ((pAC->dev[pRxPort->PortIndex]->flags &
2883                                 (IFF_PROMISC | IFF_ALLMULTI)) != 0 ||
2884                                 (ForRlmt & SK_RLMT_RX_PROTOCOL) ==
2885                                 SK_RLMT_RX_PROTOCOL) {
2886                                 pMsg->dev = pAC->dev[pRxPort->PortIndex];
2887                                 pMsg->protocol = eth_type_trans(pMsg,
2888                                         pAC->dev[pRxPort->PortIndex]);
2889                                 netif_rx(pMsg);
2890                                 pAC->dev[pRxPort->PortIndex]->last_rx = jiffies;
2891                         }
2892 #else
2893                         if (0) {
2894                         }
2895 #endif
2896                         else {
2897                                 DEV_KFREE_SKB(pMsg);
2898                         }
2899
2900                 } /* if packet for rlmt */
2901         } /* for ... scanning the RXD ring */
2902
2903         /* RXD ring is empty -> fill and restart */
2904         FillRxRing(pAC, pRxPort);
2905         /* do not start if called from Close */
2906         if (pAC->BoardLevel > 0) {
2907                 ClearAndStartRx(pAC, PortIndex);
2908         }
2909         return;
2910
2911 rx_failed:
2912         /* remove error frame */
2913         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ERROR,
2914                 ("Schrottdescriptor, length: 0x%x\n", FrameLength));
2915
2916         /* release the DMA mapping */
2917
2918         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2919         PhysAddr |= (SK_U64) pRxd->VDataLow;
2920         pci_unmap_page(pAC->PciDev,
2921                          PhysAddr,
2922                          pAC->RxBufSize - 2,
2923                          PCI_DMA_FROMDEVICE);
2924         DEV_KFREE_SKB_IRQ(pRxd->pMBuf);
2925         pRxd->pMBuf = NULL;
2926         pRxPort->RxdRingFree++;
2927         pRxPort->pRxdRingHead = pRxd->pNextRxd;
2928         goto rx_start;
2929
2930 } /* ReceiveIrq */
2931
2932
2933 /*****************************************************************************
2934  *
2935  *      ClearAndStartRx - give a start receive command to BMU, clear IRQ
2936  *
2937  * Description:
2938  *      This function sends a start command and a clear interrupt
2939  *      command for one receive queue to the BMU.
2940  *
2941  * Returns: N/A
2942  *      none
2943  */
2944 static void ClearAndStartRx(
2945 SK_AC   *pAC,           /* pointer to the adapter context */
2946 int     PortIndex)      /* index of the receive port (XMAC) */
2947 {
2948         SK_OUT8(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_CTRL,
2949                 RX_Q_CTRL_START | RX_Q_CTRL_CLR_I_EOF);
2950 } /* ClearAndStartRx */
2951
2952
2953 /*****************************************************************************
2954  *
2955  *      ClearTxIrq - give a clear transmit IRQ command to BMU
2956  *
2957  * Description:
2958  *      This function sends a clear tx IRQ command for one
2959  *      transmit queue to the BMU.
2960  *
2961  * Returns: N/A
2962  */
2963 static void ClearTxIrq(
2964 SK_AC   *pAC,           /* pointer to the adapter context */
2965 int     PortIndex,      /* index of the transmit port (XMAC) */
2966 int     Prio)           /* priority or normal queue */
2967 {
2968         SK_OUT8(pAC->IoBase, TxQueueAddr[PortIndex][Prio]+TX_Q_CTRL,
2969                 TX_Q_CTRL_CLR_I_EOF);
2970 } /* ClearTxIrq */
2971
2972
2973 /*****************************************************************************
2974  *
2975  *      ClearRxRing - remove all buffers from the receive ring
2976  *
2977  * Description:
2978  *      This function removes all receive buffers from the ring.
2979  *      The receive BMU must be stopped before calling this function.
2980  *
2981  * Returns: N/A
2982  */
2983 static void ClearRxRing(
2984 SK_AC   *pAC,           /* pointer to adapter context */
2985 RX_PORT *pRxPort)       /* pointer to rx port struct */
2986 {
2987 RXD             *pRxd;  /* pointer to the current descriptor */
2988 unsigned long   Flags;
2989 SK_U64          PhysAddr;
2990
2991         if (pRxPort->RxdRingFree == pAC->RxDescrPerRing) {
2992                 return;
2993         }
2994         spin_lock_irqsave(&pRxPort->RxDesRingLock, Flags);
2995         pRxd = pRxPort->pRxdRingHead;
2996         do {
2997                 if (pRxd->pMBuf != NULL) {
2998
2999                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
3000                         PhysAddr |= (SK_U64) pRxd->VDataLow;
3001                         pci_unmap_page(pAC->PciDev,
3002                                          PhysAddr,
3003                                          pAC->RxBufSize - 2,
3004                                          PCI_DMA_FROMDEVICE);
3005                         DEV_KFREE_SKB(pRxd->pMBuf);
3006                         pRxd->pMBuf = NULL;
3007                 }
3008                 pRxd->RBControl &= RX_CTRL_OWN_BMU;
3009                 pRxd = pRxd->pNextRxd;
3010                 pRxPort->RxdRingFree++;
3011         } while (pRxd != pRxPort->pRxdRingTail);
3012         pRxPort->pRxdRingTail = pRxPort->pRxdRingHead;
3013         spin_unlock_irqrestore(&pRxPort->RxDesRingLock, Flags);
3014 } /* ClearRxRing */
3015
3016
3017 /*****************************************************************************
3018  *
3019  *      ClearTxRing - remove all buffers from the transmit ring
3020  *
3021  * Description:
3022  *      This function removes all transmit buffers from the ring.
3023  *      The transmit BMU must be stopped before calling this function
3024  *      and transmitting at the upper level must be disabled.
3025  *      The BMU own bit of all descriptors is cleared, the rest is
3026  *      done by calling FreeTxDescriptors.
3027  *
3028  * Returns: N/A
3029  */
3030 static void ClearTxRing(
3031 SK_AC   *pAC,           /* pointer to adapter context */
3032 TX_PORT *pTxPort)       /* pointer to tx prt struct */
3033 {
3034 TXD             *pTxd;          /* pointer to the current descriptor */
3035 int             i;
3036 unsigned long   Flags;
3037
3038         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
3039         pTxd = pTxPort->pTxdRingHead;
3040         for (i=0; i<pAC->TxDescrPerRing; i++) {
3041                 pTxd->TBControl &= ~TX_CTRL_OWN_BMU;
3042                 pTxd = pTxd->pNextTxd;
3043         }
3044         FreeTxDescriptors(pAC, pTxPort);
3045         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
3046 } /* ClearTxRing */
3047
3048
3049 #if 0
3050 /*****************************************************************************
3051  *
3052  *      SetQueueSizes - configure the sizes of rx and tx queues
3053  *
3054  * Description:
3055  *      This function assigns the sizes for active and passive port
3056  *      to the appropriate HWinit structure variables.
3057  *      The passive port(s) get standard values, all remaining RAM
3058  *      is given to the active port.
3059  *      The queue sizes are in kbyte and must be multiple of 8.
3060  *      The limits for the number of buffers filled into the rx rings
3061  *      is also set in this routine.
3062  *
3063  * Returns:
3064  *      none
3065  */
3066 static void SetQueueSizes(
3067 SK_AC   *pAC)   /* pointer to the adapter context */
3068 {
3069 int     StandbyRam;     /* adapter RAM used for a standby port */
3070 int     RemainingRam;   /* adapter RAM available for the active port */
3071 int     RxRam;          /* RAM used for the active port receive queue */
3072 int     i;              /* loop counter */
3073
3074 if (pAC->RlmtNets == 1) {
3075         StandbyRam = SK_RLMT_STANDBY_QRXSIZE + SK_RLMT_STANDBY_QXASIZE +
3076                 SK_RLMT_STANDBY_QXSSIZE;
3077         RemainingRam = pAC->GIni.GIRamSize -
3078                 (pAC->GIni.GIMacsFound-1) * StandbyRam;
3079         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3080                 pAC->GIni.GP[i].PRxQSize = SK_RLMT_STANDBY_QRXSIZE;
3081                 pAC->GIni.GP[i].PXSQSize = SK_RLMT_STANDBY_QXSSIZE;
3082                 pAC->GIni.GP[i].PXAQSize = SK_RLMT_STANDBY_QXASIZE;
3083         }
3084         RxRam = (RemainingRam * 8 / 10) & ~7;
3085         pAC->GIni.GP[pAC->ActivePort].PRxQSize = RxRam;
3086         pAC->GIni.GP[pAC->ActivePort].PXSQSize = 0;
3087         pAC->GIni.GP[pAC->ActivePort].PXAQSize =
3088                 (RemainingRam - RxRam) & ~7;
3089         pAC->RxQueueSize = RxRam;
3090         pAC->TxSQueueSize = 0;
3091         pAC->TxAQueueSize = (RemainingRam - RxRam) & ~7;
3092         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3093                 ("queue sizes settings - rx:%d  txA:%d txS:%d\n",
3094                 pAC->RxQueueSize,pAC->TxAQueueSize, pAC->TxSQueueSize));
3095 } else {
3096         RemainingRam = pAC->GIni.GIRamSize/pAC->GIni.GIMacsFound;
3097         RxRam = (RemainingRam * 8 / 10) & ~7;
3098         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3099                 pAC->GIni.GP[i].PRxQSize = RxRam;
3100                 pAC->GIni.GP[i].PXSQSize = 0;
3101                 pAC->GIni.GP[i].PXAQSize = (RemainingRam - RxRam) & ~7;
3102         }
3103
3104         pAC->RxQueueSize = RxRam;
3105         pAC->TxSQueueSize = 0;
3106         pAC->TxAQueueSize = (RemainingRam - RxRam) & ~7;
3107 }
3108         for (i=0; i<SK_MAX_MACS; i++) {
3109                 pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing;
3110         }
3111
3112         if (pAC->RlmtNets == 2) {
3113                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3114                         pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing - 100;
3115                 }
3116         } else {
3117                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3118                         pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing - 100;
3119                 }
3120                 /*
3121                  * Do not set the Limit to 0, because this could cause
3122                  * wrap around with ReQueue'ed buffers (a buffer could
3123                  * be requeued in the same position, made accessable to
3124                  * the hardware, and the hardware could change its
3125                  * contents!
3126                  */
3127                 pAC->RxPort[pAC->ActivePort].RxFillLimit = 1;
3128         }
3129
3130 #ifdef DEBUG
3131         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3132                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
3133                         ("i: %d,  RxQSize: %d,  PXSQsize: %d, PXAQSize: %d\n",
3134                         i,
3135                         pAC->GIni.GP[i].PRxQSize,
3136                         pAC->GIni.GP[i].PXSQSize,
3137                         pAC->GIni.GP[i].PXAQSize));
3138         }
3139 #endif
3140 } /* SetQueueSizes */
3141
3142
3143 /*****************************************************************************
3144  *
3145  *      SkGeSetMacAddr - Set the hardware MAC address
3146  *
3147  * Description:
3148  *      This function sets the MAC address used by the adapter.
3149  *
3150  * Returns:
3151  *      0, if everything is ok
3152  *      !=0, on error
3153  */
3154 static int SkGeSetMacAddr(struct SK_NET_DEVICE *dev, void *p)
3155 {
3156
3157 DEV_NET *pNet = (DEV_NET*) dev->priv;
3158 SK_AC   *pAC = pNet->pAC;
3159
3160 struct sockaddr *addr = p;
3161 unsigned long   Flags;
3162
3163         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3164                 ("SkGeSetMacAddr starts now...\n"));
3165         if(netif_running(dev))
3166                 return -EBUSY;
3167
3168         memcpy(dev->dev_addr, addr->sa_data,dev->addr_len);
3169
3170         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3171
3172         if (pAC->RlmtNets == 2)
3173                 SkAddrOverride(pAC, pAC->IoBase, pNet->NetNr,
3174                         (SK_MAC_ADDR*)dev->dev_addr, SK_ADDR_VIRTUAL_ADDRESS);
3175         else
3176                 SkAddrOverride(pAC, pAC->IoBase, pAC->ActivePort,
3177                         (SK_MAC_ADDR*)dev->dev_addr, SK_ADDR_VIRTUAL_ADDRESS);
3178
3179
3180
3181         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3182         return 0;
3183 } /* SkGeSetMacAddr */
3184 #endif
3185
3186
3187 /*****************************************************************************
3188  *
3189  *      SkGeSetRxMode - set receive mode
3190  *
3191  * Description:
3192  *      This function sets the receive mode of an adapter. The adapter
3193  *      supports promiscuous mode, allmulticast mode and a number of
3194  *      multicast addresses. If more multicast addresses the available
3195  *      are selected, a hash function in the hardware is used.
3196  *
3197  * Returns:
3198  *      0, if everything is ok
3199  *      !=0, on error
3200  */
3201 #if 0
3202 static void SkGeSetRxMode(struct SK_NET_DEVICE *dev)
3203 {
3204
3205 DEV_NET         *pNet;
3206 SK_AC           *pAC;
3207
3208 struct dev_mc_list      *pMcList;
3209 int                     i;
3210 int                     PortIdx;
3211 unsigned long           Flags;
3212
3213         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3214                 ("SkGeSetRxMode starts now... "));
3215
3216         pNet = (DEV_NET*) dev->priv;
3217         pAC = pNet->pAC;
3218         if (pAC->RlmtNets == 1)
3219                 PortIdx = pAC->ActivePort;
3220         else
3221                 PortIdx = pNet->NetNr;
3222
3223         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3224         if (dev->flags & IFF_PROMISC) {
3225                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3226                         ("PROMISCUOUS mode\n"));
3227                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3228                         SK_PROM_MODE_LLC);
3229         } else if (dev->flags & IFF_ALLMULTI) {
3230                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3231                         ("ALLMULTI mode\n"));
3232                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3233                         SK_PROM_MODE_ALL_MC);
3234         } else {
3235                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3236                         SK_PROM_MODE_NONE);
3237                 SkAddrMcClear(pAC, pAC->IoBase, PortIdx, 0);
3238
3239                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3240                         ("Number of MC entries: %d ", dev->mc_count));
3241
3242                 pMcList = dev->mc_list;
3243                 for (i=0; i<dev->mc_count; i++, pMcList = pMcList->next) {
3244                         SkAddrMcAdd(pAC, pAC->IoBase, PortIdx,
3245                                 (SK_MAC_ADDR*)pMcList->dmi_addr, 0);
3246                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_MCA,
3247                                 ("%02x:%02x:%02x:%02x:%02x:%02x\n",
3248                                 pMcList->dmi_addr[0],
3249                                 pMcList->dmi_addr[1],
3250                                 pMcList->dmi_addr[2],
3251                                 pMcList->dmi_addr[3],
3252                                 pMcList->dmi_addr[4],
3253                                 pMcList->dmi_addr[5]));
3254                 }
3255                 SkAddrMcUpdate(pAC, pAC->IoBase, PortIdx);
3256         }
3257         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3258
3259         return;
3260 } /* SkGeSetRxMode */
3261
3262
3263 /*****************************************************************************
3264  *
3265  *      SkGeChangeMtu - set the MTU to another value
3266  *
3267  * Description:
3268  *      This function sets is called whenever the MTU size is changed
3269  *      (ifconfig mtu xxx dev ethX). If the MTU is bigger than standard
3270  *      ethernet MTU size, long frame support is activated.
3271  *
3272  * Returns:
3273  *      0, if everything is ok
3274  *      !=0, on error
3275  */
3276 static int SkGeChangeMtu(struct SK_NET_DEVICE *dev, int NewMtu)
3277 {
3278 DEV_NET         *pNet;
3279 DEV_NET         *pOtherNet;
3280 SK_AC           *pAC;
3281 unsigned long   Flags;
3282 int             i;
3283 SK_EVPARA       EvPara;
3284
3285         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3286                 ("SkGeChangeMtu starts now...\n"));
3287
3288         pNet = (DEV_NET*) dev->priv;
3289         pAC = pNet->pAC;
3290
3291         if ((NewMtu < 68) || (NewMtu > SK_JUMBO_MTU)) {
3292                 return -EINVAL;
3293         }
3294
3295         if(pAC->BoardLevel != 2) {
3296                 return -EINVAL;
3297         }
3298
3299         pNet->Mtu = NewMtu;
3300         pOtherNet = (DEV_NET*)pAC->dev[1 - pNet->NetNr]->priv;
3301         if ((pOtherNet->Mtu > 1500) && (NewMtu <= 1500) && (pOtherNet->Up==1)) {
3302                 return(0);
3303         }
3304
3305         EvPara.Para32[0] = pNet->NetNr;
3306         EvPara.Para32[1] = -1;
3307
3308         pAC->RxBufSize = NewMtu + 32;
3309         dev->mtu = NewMtu;
3310
3311         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3312                 ("New MTU: %d\n", NewMtu));
3313
3314         /* prevent reconfiguration while changing the MTU */
3315
3316         /* disable interrupts */
3317         SK_OUT32(pAC->IoBase, B0_IMSK, 0);
3318         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3319
3320         /* Found more than one port */
3321         if ((pAC->GIni.GIMacsFound == 2 ) &&
3322                 (pAC->RlmtNets == 2)) {
3323                         /* Stop both ports */
3324                         EvPara.Para32[0] = 0;
3325                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3326                         EvPara.Para32[0] = 1;
3327                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3328         } else {
3329                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3330         }
3331
3332         SkEventDispatcher(pAC, pAC->IoBase);
3333
3334         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3335                 spin_lock_irqsave(
3336                         &pAC->TxPort[i][TX_PRIO_LOW].TxDesRingLock, Flags);
3337                 netif_stop_queue(pAC->dev[i]);
3338
3339         }
3340
3341         /*
3342          * adjust number of rx buffers allocated
3343          */
3344         if (NewMtu > 1500) {
3345                 /* use less rx buffers */
3346                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3347                         /* Found more than one port */
3348                         if ((pAC->GIni.GIMacsFound == 2 ) &&
3349                                 (pAC->RlmtNets == 2)) {
3350                                         pAC->RxPort[i].RxFillLimit =
3351                                                 pAC->RxDescrPerRing - 100;
3352                         } else {
3353                                 if (i == pAC->ActivePort)
3354                                         pAC->RxPort[i].RxFillLimit =
3355                                                 pAC->RxDescrPerRing - 100;
3356                                 else
3357                                         pAC->RxPort[i].RxFillLimit =
3358                                                 pAC->RxDescrPerRing - 10;
3359                         }
3360                 }
3361         }
3362         else {
3363                 /* use normal amount of rx buffers */
3364                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3365                         /* Found more than one port */
3366                         if ((pAC->GIni.GIMacsFound == 2 ) &&
3367                                 (pAC->RlmtNets == 2)) {
3368                                         pAC->RxPort[i].RxFillLimit = 1;
3369                         } else {
3370                                 if (i == pAC->ActivePort)
3371                                         pAC->RxPort[i].RxFillLimit = 1;
3372                                 else
3373                                         pAC->RxPort[i].RxFillLimit =
3374                                                 pAC->RxDescrPerRing - 100;
3375                         }
3376                 }
3377         }
3378
3379         SkGeDeInit(pAC, pAC->IoBase);
3380
3381         /*
3382          * enable/disable hardware support for long frames
3383          */
3384         if (NewMtu > 1500) {
3385 //              pAC->JumboActivated = SK_TRUE; /* is never set back !!! */
3386                 pAC->GIni.GIPortUsage = SK_JUMBO_LINK;
3387         }
3388         else {
3389                 if ((pAC->GIni.GIMacsFound == 2 ) &&
3390                         (pAC->RlmtNets == 2)) {
3391                         pAC->GIni.GIPortUsage = SK_MUL_LINK;
3392                 } else {
3393                         pAC->GIni.GIPortUsage = SK_RED_LINK;
3394                 }
3395         }
3396
3397         SkGeInit(   pAC, pAC->IoBase, 1);
3398         SkI2cInit(  pAC, pAC->IoBase, 1);
3399         SkEventInit(pAC, pAC->IoBase, 1);
3400         SkPnmiInit( pAC, pAC->IoBase, 1);
3401         SkAddrInit( pAC, pAC->IoBase, 1);
3402         SkRlmtInit( pAC, pAC->IoBase, 1);
3403         SkTimerInit(pAC, pAC->IoBase, 1);
3404
3405         /*
3406          * tschilling:
3407          * Speed and others are set back to default in level 1 init!
3408          */
3409         GetConfiguration(pAC);
3410
3411         SkGeInit(   pAC, pAC->IoBase, 2);
3412         SkI2cInit(  pAC, pAC->IoBase, 2);
3413         SkEventInit(pAC, pAC->IoBase, 2);
3414         SkPnmiInit( pAC, pAC->IoBase, 2);
3415         SkAddrInit( pAC, pAC->IoBase, 2);
3416         SkRlmtInit( pAC, pAC->IoBase, 2);
3417         SkTimerInit(pAC, pAC->IoBase, 2);
3418
3419         /*
3420          * clear and reinit the rx rings here
3421          */
3422         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3423                 ReceiveIrq(pAC, &pAC->RxPort[i], SK_TRUE);
3424                 ClearRxRing(pAC, &pAC->RxPort[i]);
3425                 FillRxRing(pAC, &pAC->RxPort[i]);
3426
3427                 /* Enable transmit descriptor polling. */
3428                 SkGePollTxD(pAC, pAC->IoBase, i, SK_TRUE);
3429                 FillRxRing(pAC, &pAC->RxPort[i]);
3430         };
3431
3432         SkGeYellowLED(pAC, pAC->IoBase, 1);
3433
3434 #ifdef USE_INT_MOD
3435         {
3436                 unsigned long ModBase;
3437                 ModBase = 53125000 / INTS_PER_SEC;
3438                 SK_OUT32(pAC->IoBase, B2_IRQM_INI, ModBase);
3439                 SK_OUT32(pAC->IoBase, B2_IRQM_MSK, IRQ_MOD_MASK);
3440                 SK_OUT32(pAC->IoBase, B2_IRQM_CTRL, TIM_START);
3441         }
3442 #endif
3443
3444         netif_start_queue(pAC->dev[pNet->PortNr]);
3445         for (i=pAC->GIni.GIMacsFound-1; i>=0; i--) {
3446                 spin_unlock(&pAC->TxPort[i][TX_PRIO_LOW].TxDesRingLock);
3447         }
3448
3449         /* enable Interrupts */
3450         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
3451         SK_OUT32(pAC->IoBase, B0_HWE_IMSK, IRQ_HWE_MASK);
3452
3453         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3454         SkEventDispatcher(pAC, pAC->IoBase);
3455
3456         /* Found more than one port */
3457         if ((pAC->GIni.GIMacsFound == 2 ) &&
3458                 (pAC->RlmtNets == 2)) {
3459                         /* Start both ports */
3460                         EvPara.Para32[0] = pAC->RlmtNets;
3461                         EvPara.Para32[1] = -1;
3462                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_SET_NETS,
3463                                 EvPara);
3464
3465
3466                         EvPara.Para32[1] = -1;
3467                         EvPara.Para32[0] = pNet->PortNr;
3468                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3469
3470                         if (pOtherNet->Up) {
3471                                 EvPara.Para32[0] = pOtherNet->PortNr;
3472                                 SkEventQueue(pAC, SKGE_RLMT,
3473                                         SK_RLMT_START, EvPara);
3474                         }
3475         } else {
3476                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3477         }
3478
3479         SkEventDispatcher(pAC, pAC->IoBase);
3480         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3481
3482         return 0;
3483 } /* SkGeChangeMtu */
3484
3485
3486 /*****************************************************************************
3487  *
3488  *      SkGeStats - return ethernet device statistics
3489  *
3490  * Description:
3491  *      This function return statistic data about the ethernet device
3492  *      to the operating system.
3493  *
3494  * Returns:
3495  *      pointer to the statistic structure.
3496  */
3497 static struct net_device_stats *SkGeStats(struct SK_NET_DEVICE *dev)
3498 {
3499 DEV_NET *pNet = (DEV_NET*) dev->priv;
3500 SK_AC   *pAC = pNet->pAC;
3501 SK_PNMI_STRUCT_DATA *pPnmiStruct;       /* structure for all Pnmi-Data */
3502 SK_PNMI_STAT    *pPnmiStat;             /* pointer to virtual XMAC stat. data */
3503 SK_PNMI_CONF    *pPnmiConf;             /* pointer to virtual link config. */
3504 unsigned int    Size;                   /* size of pnmi struct */
3505 unsigned long   Flags;                  /* for spin lock */
3506
3507         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3508                 ("SkGeStats starts now...\n"));
3509         pPnmiStruct = &pAC->PnmiStruct;
3510         memset(pPnmiStruct, 0, sizeof(SK_PNMI_STRUCT_DATA));
3511         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3512         Size = SK_PNMI_STRUCT_SIZE;
3513                 SkPnmiGetStruct(pAC, pAC->IoBase, pPnmiStruct, &Size, pNet->NetNr);
3514         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3515         pPnmiStat = &pPnmiStruct->Stat[0];
3516         pPnmiConf = &pPnmiStruct->Conf[0];
3517
3518         pAC->stats.rx_packets = (SK_U32) pPnmiStruct->RxDeliveredCts & 0xFFFFFFFF;
3519         pAC->stats.tx_packets = (SK_U32) pPnmiStat->StatTxOkCts & 0xFFFFFFFF;
3520         pAC->stats.rx_bytes = (SK_U32) pPnmiStruct->RxOctetsDeliveredCts;
3521         pAC->stats.tx_bytes = (SK_U32) pPnmiStat->StatTxOctetsOkCts;
3522
3523         if (pNet->Mtu <= 1500) {
3524                 pAC->stats.rx_errors = (SK_U32) pPnmiStruct->InErrorsCts & 0xFFFFFFFF;
3525         } else {
3526                 pAC->stats.rx_errors = (SK_U32) ((pPnmiStruct->InErrorsCts -
3527                         pPnmiStat->StatRxTooLongCts) & 0xFFFFFFFF);
3528         }
3529
3530
3531         if (pAC->GIni.GP[0].PhyType == SK_PHY_XMAC && pAC->HWRevision < 12)
3532                 pAC->stats.rx_errors = pAC->stats.rx_errors - pPnmiStat->StatRxShortsCts;
3533
3534         pAC->stats.tx_errors = (SK_U32) pPnmiStat->StatTxSingleCollisionCts & 0xFFFFFFFF;
3535         pAC->stats.rx_dropped = (SK_U32) pPnmiStruct->RxNoBufCts & 0xFFFFFFFF;
3536         pAC->stats.tx_dropped = (SK_U32) pPnmiStruct->TxNoBufCts & 0xFFFFFFFF;
3537         pAC->stats.multicast = (SK_U32) pPnmiStat->StatRxMulticastOkCts & 0xFFFFFFFF;
3538         pAC->stats.collisions = (SK_U32) pPnmiStat->StatTxSingleCollisionCts & 0xFFFFFFFF;
3539
3540         /* detailed rx_errors: */
3541         pAC->stats.rx_length_errors = (SK_U32) pPnmiStat->StatRxRuntCts & 0xFFFFFFFF;
3542         pAC->stats.rx_over_errors = (SK_U32) pPnmiStat->StatRxFifoOverflowCts & 0xFFFFFFFF;
3543         pAC->stats.rx_crc_errors = (SK_U32) pPnmiStat->StatRxFcsCts & 0xFFFFFFFF;
3544         pAC->stats.rx_frame_errors = (SK_U32) pPnmiStat->StatRxFramingCts & 0xFFFFFFFF;
3545         pAC->stats.rx_fifo_errors = (SK_U32) pPnmiStat->StatRxFifoOverflowCts & 0xFFFFFFFF;
3546         pAC->stats.rx_missed_errors = (SK_U32) pPnmiStat->StatRxMissedCts & 0xFFFFFFFF;
3547
3548         /* detailed tx_errors */
3549         pAC->stats.tx_aborted_errors = (SK_U32) 0;
3550         pAC->stats.tx_carrier_errors = (SK_U32) pPnmiStat->StatTxCarrierCts & 0xFFFFFFFF;
3551         pAC->stats.tx_fifo_errors = (SK_U32) pPnmiStat->StatTxFifoUnderrunCts & 0xFFFFFFFF;
3552         pAC->stats.tx_heartbeat_errors = (SK_U32) pPnmiStat->StatTxCarrierCts & 0xFFFFFFFF;
3553         pAC->stats.tx_window_errors = (SK_U32) 0;
3554
3555         return(&pAC->stats);
3556 } /* SkGeStats */
3557
3558
3559 /*****************************************************************************
3560  *
3561  *      SkGeIoctl - IO-control function
3562  *
3563  * Description:
3564  *      This function is called if an ioctl is issued on the device.
3565  *      There are three subfunction for reading, writing and test-writing
3566  *      the private MIB data structure (usefull for SysKonnect-internal tools).
3567  *
3568  * Returns:
3569  *      0, if everything is ok
3570  *      !=0, on error
3571  */
3572 static int SkGeIoctl(struct SK_NET_DEVICE *dev, struct ifreq *rq, int cmd)
3573 {
3574 DEV_NET         *pNet;
3575 SK_AC           *pAC;
3576
3577 SK_GE_IOCTL     Ioctl;
3578 unsigned int    Err = 0;
3579 int             Size;
3580
3581         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3582                 ("SkGeIoctl starts now...\n"));
3583
3584         pNet = (DEV_NET*) dev->priv;
3585         pAC = pNet->pAC;
3586
3587         if(copy_from_user(&Ioctl, rq->ifr_data, sizeof(SK_GE_IOCTL))) {
3588                 return -EFAULT;
3589         }
3590
3591         switch(cmd) {
3592         case SK_IOCTL_SETMIB:
3593         case SK_IOCTL_PRESETMIB:
3594                 if (!capable(CAP_NET_ADMIN)) return -EPERM;
3595         case SK_IOCTL_GETMIB:
3596                 if(copy_from_user(&pAC->PnmiStruct, Ioctl.pData,
3597                         Ioctl.Len<sizeof(pAC->PnmiStruct)?
3598                         Ioctl.Len : sizeof(pAC->PnmiStruct))) {
3599                         return -EFAULT;
3600                 }
3601                 Size = SkGeIocMib(pNet, Ioctl.Len, cmd);
3602                 if(copy_to_user(Ioctl.pData, &pAC->PnmiStruct,
3603                         Ioctl.Len<Size? Ioctl.Len : Size)) {
3604                         return -EFAULT;
3605                 }
3606                 Ioctl.Len = Size;
3607                 if(copy_to_user(rq->ifr_data, &Ioctl, sizeof(SK_GE_IOCTL))) {
3608                         return -EFAULT;
3609                 }
3610                 break;
3611         default:
3612                 Err = -EOPNOTSUPP;
3613         }
3614         return(Err);
3615 } /* SkGeIoctl */
3616
3617
3618 /*****************************************************************************
3619  *
3620  *      SkGeIocMib - handle a GetMib, SetMib- or PresetMib-ioctl message
3621  *
3622  * Description:
3623  *      This function reads/writes the MIB data using PNMI (Private Network
3624  *      Management Interface).
3625  *      The destination for the data must be provided with the
3626  *      ioctl call and is given to the driver in the form of
3627  *      a user space address.
3628  *      Copying from the user-provided data area into kernel messages
3629  *      and back is done by copy_from_user and copy_to_user calls in
3630  *      SkGeIoctl.
3631  *
3632  * Returns:
3633  *      returned size from PNMI call
3634  */
3635 static int SkGeIocMib(
3636 DEV_NET         *pNet,  /* pointer to the adapter context */
3637 unsigned int    Size,   /* length of ioctl data */
3638 int             mode)   /* flag for set/preset */
3639 {
3640 unsigned long   Flags;  /* for spin lock */
3641 SK_AC           *pAC;
3642
3643         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3644                 ("SkGeIocMib starts now...\n"));
3645         pAC = pNet->pAC;
3646         /* access MIB */
3647         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3648         switch(mode) {
3649         case SK_IOCTL_GETMIB:
3650                 SkPnmiGetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3651                         pNet->NetNr);
3652                 break;
3653         case SK_IOCTL_PRESETMIB:
3654                 SkPnmiPreSetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3655                         pNet->NetNr);
3656                 break;
3657         case SK_IOCTL_SETMIB:
3658                 SkPnmiSetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3659                         pNet->NetNr);
3660                 break;
3661         default:
3662                 break;
3663         }
3664         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3665         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3666                 ("MIB data access succeeded\n"));
3667         return (Size);
3668 } /* SkGeIocMib */
3669 #endif
3670
3671
3672 /*****************************************************************************
3673  *
3674  *      GetConfiguration - read configuration information
3675  *
3676  * Description:
3677  *      This function reads per-adapter configuration information from
3678  *      the options provided on the command line.
3679  *
3680  * Returns:
3681  *      none
3682  */
3683 static void GetConfiguration(
3684 SK_AC   *pAC)   /* pointer to the adapter context structure */
3685 {
3686 SK_I32  Port;           /* preferred port */
3687 int     LinkSpeed;      /* Link speed */
3688 int     AutoNeg;        /* auto negotiation off (0) or on (1) */
3689 int     DuplexCap;      /* duplex capabilities (0=both, 1=full, 2=half */
3690 int     MSMode;         /* master / slave mode selection */
3691 SK_BOOL AutoSet;
3692 SK_BOOL DupSet;
3693 /*
3694  *      The two parameters AutoNeg. and DuplexCap. map to one configuration
3695  *      parameter. The mapping is described by this table:
3696  *      DuplexCap ->    |       both    |       full    |       half    |
3697  *      AutoNeg         |               |               |               |
3698  *      -----------------------------------------------------------------
3699  *      Off             |    illegal    |       Full    |       Half    |
3700  *      -----------------------------------------------------------------
3701  *      On              |   AutoBoth    |   AutoFull    |   AutoHalf    |
3702  *      -----------------------------------------------------------------
3703  *      Sense           |   AutoSense   |   AutoSense   |   AutoSense   |
3704  */
3705 int     Capabilities[3][3] =
3706                 { {               -1, SK_LMODE_FULL,     SK_LMODE_HALF},
3707                   {SK_LMODE_AUTOBOTH, SK_LMODE_AUTOFULL, SK_LMODE_AUTOHALF},
3708                   {SK_LMODE_AUTOSENSE, SK_LMODE_AUTOSENSE, SK_LMODE_AUTOSENSE} };
3709 #define DC_BOTH 0
3710 #define DC_FULL 1
3711 #define DC_HALF 2
3712 #define AN_OFF  0
3713 #define AN_ON   1
3714 #define AN_SENS 2
3715
3716         /* settings for port A */
3717         /* settings link speed */
3718         LinkSpeed = SK_LSPEED_AUTO;     /* default: do auto select */
3719         if (Speed_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3720                 Speed_A[pAC->Index] != NULL) {
3721                 if (strcmp(Speed_A[pAC->Index],"")==0) {
3722                         LinkSpeed = SK_LSPEED_AUTO;
3723                 }
3724                 else if (strcmp(Speed_A[pAC->Index],"Auto")==0) {
3725                         LinkSpeed = SK_LSPEED_AUTO;
3726                 }
3727                 else if (strcmp(Speed_A[pAC->Index],"10")==0) {
3728                         LinkSpeed = SK_LSPEED_10MBPS;
3729                 }
3730                 else if (strcmp(Speed_A[pAC->Index],"100")==0) {
3731                         LinkSpeed = SK_LSPEED_100MBPS;
3732                 }
3733                 else if (strcmp(Speed_A[pAC->Index],"1000")==0) {
3734                         LinkSpeed = SK_LSPEED_1000MBPS;
3735                 }
3736                 else printk("%s: Illegal value for Speed_A\n",
3737                         pAC->dev[0]->name);
3738         }
3739
3740         /* Check speed parameter */
3741         /* Only copper type adapter and GE V2 cards */
3742         if (((pAC->GIni.GIChipId != CHIP_ID_YUKON) ||
3743                 (pAC->GIni.GICopperType != SK_TRUE)) &&
3744                 ((LinkSpeed != SK_LSPEED_AUTO) &&
3745                 (LinkSpeed != SK_LSPEED_1000MBPS))) {
3746                 printk("%s: Illegal value for Speed_A. "
3747                         "Not a copper card or GE V2 card\n    Using "
3748                         "speed 1000\n", pAC->dev[0]->name);
3749                 LinkSpeed = SK_LSPEED_1000MBPS;
3750         }
3751         pAC->GIni.GP[0].PLinkSpeed = LinkSpeed;
3752
3753         /* Autonegotiation */
3754         AutoNeg = AN_ON; /* tschilling: Default: Autonegotiation on! */
3755         AutoSet = SK_FALSE;
3756         if (AutoNeg_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3757                 AutoNeg_A[pAC->Index] != NULL) {
3758                 AutoSet = SK_TRUE;
3759                 if (strcmp(AutoNeg_A[pAC->Index],"")==0) {
3760                         AutoSet = SK_FALSE;
3761                 }
3762                 else if (strcmp(AutoNeg_A[pAC->Index],"On")==0) {
3763                         AutoNeg = AN_ON;
3764                 }
3765                 else if (strcmp(AutoNeg_A[pAC->Index],"Off")==0) {
3766                         AutoNeg = AN_OFF;
3767                 }
3768                 else if (strcmp(AutoNeg_A[pAC->Index],"Sense")==0) {
3769                         AutoNeg = AN_SENS;
3770                 }
3771                 else printk("%s: Illegal value for AutoNeg_A\n",
3772                         pAC->dev[0]->name);
3773         }
3774
3775         DuplexCap = DC_BOTH;
3776         DupSet = SK_FALSE;
3777         if (DupCap_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3778                 DupCap_A[pAC->Index] != NULL) {
3779                 DupSet = SK_TRUE;
3780                 if (strcmp(DupCap_A[pAC->Index],"")==0) {
3781                         DupSet = SK_FALSE;
3782                 }
3783                 else if (strcmp(DupCap_A[pAC->Index],"Both")==0) {
3784                         DuplexCap = DC_BOTH;
3785                 }
3786                 else if (strcmp(DupCap_A[pAC->Index],"Full")==0) {
3787                         DuplexCap = DC_FULL;
3788                 }
3789                 else if (strcmp(DupCap_A[pAC->Index],"Half")==0) {
3790                         DuplexCap = DC_HALF;
3791                 }
3792                 else printk("%s: Illegal value for DupCap_A\n",
3793                         pAC->dev[0]->name);
3794         }
3795
3796         /* check for illegal combinations */
3797         if (AutoSet && AutoNeg==AN_SENS && DupSet) {
3798                 printk("%s, Port A: DuplexCapabilities"
3799                         " ignored using Sense mode\n", pAC->dev[0]->name);
3800         }
3801         if (AutoSet && AutoNeg==AN_OFF && DupSet && DuplexCap==DC_BOTH){
3802                 printk("%s, Port A: Illegal combination"
3803                         " of values AutoNeg. and DuplexCap.\n    Using "
3804                         "Full Duplex\n", pAC->dev[0]->name);
3805
3806                 DuplexCap = DC_FULL;
3807         }
3808         if (AutoSet && AutoNeg==AN_OFF && !DupSet) {
3809                 DuplexCap = DC_FULL;
3810         }
3811
3812         if (!AutoSet && DupSet) {
3813                 printk("%s, Port A: Duplex setting not"
3814                         " possible in\n    default AutoNegotiation mode"
3815                         " (Sense).\n    Using AutoNegotiation On\n",
3816                         pAC->dev[0]->name);
3817                 AutoNeg = AN_ON;
3818         }
3819
3820         /* set the desired mode */
3821         pAC->GIni.GP[0].PLinkModeConf =
3822                 Capabilities[AutoNeg][DuplexCap];
3823
3824         pAC->GIni.GP[0].PFlowCtrlMode = SK_FLOW_MODE_SYM_OR_REM;
3825         if (FlowCtrl_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3826                 FlowCtrl_A[pAC->Index] != NULL) {
3827                 if (strcmp(FlowCtrl_A[pAC->Index],"") == 0) {
3828                 }
3829                 else if (strcmp(FlowCtrl_A[pAC->Index],"SymOrRem") == 0) {
3830                         pAC->GIni.GP[0].PFlowCtrlMode =
3831                                 SK_FLOW_MODE_SYM_OR_REM;
3832                 }
3833                 else if (strcmp(FlowCtrl_A[pAC->Index],"Sym")==0) {
3834                         pAC->GIni.GP[0].PFlowCtrlMode =
3835                                 SK_FLOW_MODE_SYMMETRIC;
3836                 }
3837                 else if (strcmp(FlowCtrl_A[pAC->Index],"LocSend")==0) {
3838                         pAC->GIni.GP[0].PFlowCtrlMode =
3839                                 SK_FLOW_MODE_LOC_SEND;
3840                 }
3841                 else if (strcmp(FlowCtrl_A[pAC->Index],"None")==0) {
3842                         pAC->GIni.GP[0].PFlowCtrlMode =
3843                                 SK_FLOW_MODE_NONE;
3844                 }
3845                 else printk("Illegal value for FlowCtrl_A\n");
3846         }
3847         if (AutoNeg==AN_OFF && pAC->GIni.GP[0].PFlowCtrlMode!=
3848                 SK_FLOW_MODE_NONE) {
3849                 printk("%s, Port A: FlowControl"
3850                         " impossible without AutoNegotiation,"
3851                         " disabled\n", pAC->dev[0]->name);
3852                 pAC->GIni.GP[0].PFlowCtrlMode = SK_FLOW_MODE_NONE;
3853         }
3854
3855         MSMode = SK_MS_MODE_AUTO; /* default: do auto select */
3856         if (Role_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3857                 Role_A[pAC->Index] != NULL) {
3858                 if (strcmp(Role_A[pAC->Index],"")==0) {
3859                 }
3860                 else if (strcmp(Role_A[pAC->Index],"Auto")==0) {
3861                         MSMode = SK_MS_MODE_AUTO;
3862                 }
3863                 else if (strcmp(Role_A[pAC->Index],"Master")==0) {
3864                         MSMode = SK_MS_MODE_MASTER;
3865                 }
3866                 else if (strcmp(Role_A[pAC->Index],"Slave")==0) {
3867                         MSMode = SK_MS_MODE_SLAVE;
3868                 }
3869                 else printk("%s: Illegal value for Role_A\n",
3870                         pAC->dev[0]->name);
3871         }
3872         pAC->GIni.GP[0].PMSMode = MSMode;
3873
3874
3875         /* settings for port B */
3876         /* settings link speed */
3877         LinkSpeed = SK_LSPEED_AUTO;     /* default: do auto select */
3878         if (Speed_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3879                 Speed_B[pAC->Index] != NULL) {
3880                 if (strcmp(Speed_B[pAC->Index],"")==0) {
3881                         LinkSpeed = SK_LSPEED_AUTO;
3882                 }
3883                 else if (strcmp(Speed_B[pAC->Index],"Auto")==0) {
3884                         LinkSpeed = SK_LSPEED_AUTO;
3885                 }
3886                 else if (strcmp(Speed_B[pAC->Index],"10")==0) {
3887                         LinkSpeed = SK_LSPEED_10MBPS;
3888                 }
3889                 else if (strcmp(Speed_B[pAC->Index],"100")==0) {
3890                         LinkSpeed = SK_LSPEED_100MBPS;
3891                 }
3892                 else if (strcmp(Speed_B[pAC->Index],"1000")==0) {
3893                         LinkSpeed = SK_LSPEED_1000MBPS;
3894                 }
3895                 else printk("%s: Illegal value for Speed_B\n",
3896                         pAC->dev[1]->name);
3897         }
3898
3899         /* Check speed parameter */
3900         /* Only copper type adapter and GE V2 cards */
3901         if (((pAC->GIni.GIChipId != CHIP_ID_YUKON) ||
3902                 (pAC->GIni.GICopperType != SK_TRUE)) &&
3903                 ((LinkSpeed != SK_LSPEED_AUTO) &&
3904                 (LinkSpeed != SK_LSPEED_1000MBPS))) {
3905                 printk("%s: Illegal value for Speed_B. "
3906                         "Not a copper card or GE V2 card\n    Using "
3907                         "speed 1000\n", pAC->dev[1]->name);
3908                 LinkSpeed = SK_LSPEED_1000MBPS;
3909         }
3910         pAC->GIni.GP[1].PLinkSpeed = LinkSpeed;
3911
3912         /* Auto negotiation */
3913         AutoNeg = AN_SENS; /* default: do auto Sense */
3914         AutoSet = SK_FALSE;
3915         if (AutoNeg_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3916                 AutoNeg_B[pAC->Index] != NULL) {
3917                 AutoSet = SK_TRUE;
3918                 if (strcmp(AutoNeg_B[pAC->Index],"")==0) {
3919                         AutoSet = SK_FALSE;
3920                 }
3921                 else if (strcmp(AutoNeg_B[pAC->Index],"On")==0) {
3922                         AutoNeg = AN_ON;
3923                 }
3924                 else if (strcmp(AutoNeg_B[pAC->Index],"Off")==0) {
3925                         AutoNeg = AN_OFF;
3926                 }
3927                 else if (strcmp(AutoNeg_B[pAC->Index],"Sense")==0) {
3928                         AutoNeg = AN_SENS;
3929                 }
3930                 else printk("Illegal value for AutoNeg_B\n");
3931         }
3932
3933         DuplexCap = DC_BOTH;
3934         DupSet = SK_FALSE;
3935         if (DupCap_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3936                 DupCap_B[pAC->Index] != NULL) {
3937                 DupSet = SK_TRUE;
3938                 if (strcmp(DupCap_B[pAC->Index],"")==0) {
3939                         DupSet = SK_FALSE;
3940                 }
3941                 else if (strcmp(DupCap_B[pAC->Index],"Both")==0) {
3942                         DuplexCap = DC_BOTH;
3943                 }
3944                 else if (strcmp(DupCap_B[pAC->Index],"Full")==0) {
3945                         DuplexCap = DC_FULL;
3946                 }
3947                 else if (strcmp(DupCap_B[pAC->Index],"Half")==0) {
3948                         DuplexCap = DC_HALF;
3949                 }
3950                 else printk("Illegal value for DupCap_B\n");
3951         }
3952
3953         /* check for illegal combinations */
3954         if (AutoSet && AutoNeg==AN_SENS && DupSet) {
3955                 printk("%s, Port B: DuplexCapabilities"
3956                         " ignored using Sense mode\n", pAC->dev[1]->name);
3957         }
3958         if (AutoSet && AutoNeg==AN_OFF && DupSet && DuplexCap==DC_BOTH){
3959                 printk("%s, Port B: Illegal combination"
3960                         " of values AutoNeg. and DuplexCap.\n    Using "
3961                         "Full Duplex\n", pAC->dev[1]->name);
3962
3963                 DuplexCap = DC_FULL;
3964         }
3965         if (AutoSet && AutoNeg==AN_OFF && !DupSet) {
3966                 DuplexCap = DC_FULL;
3967         }
3968
3969         if (!AutoSet && DupSet) {
3970                 printk("%s, Port B: Duplex setting not"
3971                         " possible in\n    default AutoNegotiation mode"
3972                         " (Sense).\n    Using AutoNegotiation On\n",
3973                         pAC->dev[1]->name);
3974                 AutoNeg = AN_ON;
3975         }
3976
3977         /* set the desired mode */
3978         pAC->GIni.GP[1].PLinkModeConf =
3979                 Capabilities[AutoNeg][DuplexCap];
3980
3981         pAC->GIni.GP[1].PFlowCtrlMode = SK_FLOW_MODE_SYM_OR_REM;
3982         if (FlowCtrl_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3983                 FlowCtrl_B[pAC->Index] != NULL) {
3984                 if (strcmp(FlowCtrl_B[pAC->Index],"") == 0) {
3985                 }
3986                 else if (strcmp(FlowCtrl_B[pAC->Index],"SymOrRem") == 0) {
3987                         pAC->GIni.GP[1].PFlowCtrlMode =
3988                                 SK_FLOW_MODE_SYM_OR_REM;
3989                 }
3990                 else if (strcmp(FlowCtrl_B[pAC->Index],"Sym")==0) {
3991                         pAC->GIni.GP[1].PFlowCtrlMode =
3992                                 SK_FLOW_MODE_SYMMETRIC;
3993                 }
3994                 else if (strcmp(FlowCtrl_B[pAC->Index],"LocSend")==0) {
3995                         pAC->GIni.GP[1].PFlowCtrlMode =
3996                                 SK_FLOW_MODE_LOC_SEND;
3997                 }
3998                 else if (strcmp(FlowCtrl_B[pAC->Index],"None")==0) {
3999                         pAC->GIni.GP[1].PFlowCtrlMode =
4000                                 SK_FLOW_MODE_NONE;
4001                 }
4002                 else printk("Illegal value for FlowCtrl_B\n");
4003         }
4004         if (AutoNeg==AN_OFF && pAC->GIni.GP[1].PFlowCtrlMode!=
4005                 SK_FLOW_MODE_NONE) {
4006                 printk("%s, Port B: FlowControl"
4007                         " impossible without AutoNegotiation,"
4008                         " disabled\n", pAC->dev[1]->name);
4009                 pAC->GIni.GP[1].PFlowCtrlMode = SK_FLOW_MODE_NONE;
4010         }
4011
4012         MSMode = SK_MS_MODE_AUTO; /* default: do auto select */
4013         if (Role_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4014                 Role_B[pAC->Index] != NULL) {
4015                 if (strcmp(Role_B[pAC->Index],"")==0) {
4016                 }
4017                 else if (strcmp(Role_B[pAC->Index],"Auto")==0) {
4018                         MSMode = SK_MS_MODE_AUTO;
4019                 }
4020                 else if (strcmp(Role_B[pAC->Index],"Master")==0) {
4021                         MSMode = SK_MS_MODE_MASTER;
4022                 }
4023                 else if (strcmp(Role_B[pAC->Index],"Slave")==0) {
4024                         MSMode = SK_MS_MODE_SLAVE;
4025                 }
4026                 else printk("%s: Illegal value for Role_B\n",
4027                         pAC->dev[1]->name);
4028         }
4029         pAC->GIni.GP[1].PMSMode = MSMode;
4030
4031
4032         /* settings for both ports */
4033         pAC->ActivePort = 0;
4034         if (PrefPort != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4035                 PrefPort[pAC->Index] != NULL) {
4036                 if (strcmp(PrefPort[pAC->Index],"") == 0) { /* Auto */
4037                         pAC->ActivePort = 0;
4038                         pAC->Rlmt.Net[0].Preference = -1; /* auto */
4039                         pAC->Rlmt.Net[0].PrefPort = 0;
4040                 }
4041                 else if (strcmp(PrefPort[pAC->Index],"A") == 0) {
4042                         /*
4043                          * do not set ActivePort here, thus a port
4044                          * switch is issued after net up.
4045                          */
4046                         Port = 0;
4047                         pAC->Rlmt.Net[0].Preference = Port;
4048                         pAC->Rlmt.Net[0].PrefPort = Port;
4049                 }
4050                 else if (strcmp(PrefPort[pAC->Index],"B") == 0) {
4051                         /*
4052                          * do not set ActivePort here, thus a port
4053                          * switch is issued after net up.
4054                          */
4055                         Port = 1;
4056                         pAC->Rlmt.Net[0].Preference = Port;
4057                         pAC->Rlmt.Net[0].PrefPort = Port;
4058                 }
4059                 else printk("%s: Illegal value for PrefPort\n",
4060                         pAC->dev[0]->name);
4061         }
4062
4063         pAC->RlmtNets = 1;
4064
4065         if (RlmtMode != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4066                 RlmtMode[pAC->Index] != NULL) {
4067                 if (strcmp(RlmtMode[pAC->Index], "") == 0) {
4068                         pAC->RlmtMode = 0;
4069                 }
4070                 else if (strcmp(RlmtMode[pAC->Index], "CheckLinkState") == 0) {
4071                         pAC->RlmtMode = SK_RLMT_CHECK_LINK;
4072                 }
4073                 else if (strcmp(RlmtMode[pAC->Index], "CheckLocalPort") == 0) {
4074                         pAC->RlmtMode = SK_RLMT_CHECK_LINK |
4075                                 SK_RLMT_CHECK_LOC_LINK;
4076                 }
4077                 else if (strcmp(RlmtMode[pAC->Index], "CheckSeg") == 0) {
4078                         pAC->RlmtMode = SK_RLMT_CHECK_LINK |
4079                                 SK_RLMT_CHECK_LOC_LINK |
4080                                 SK_RLMT_CHECK_SEG;
4081                 }
4082                 else if ((strcmp(RlmtMode[pAC->Index], "DualNet") == 0) &&
4083                         (pAC->GIni.GIMacsFound == 2)) {
4084                                 pAC->RlmtMode = SK_RLMT_CHECK_LINK;
4085                                 pAC->RlmtNets = 2;
4086                 }
4087                 else {
4088                         printk("%s: Illegal value for"
4089                                 " RlmtMode, using default\n", pAC->dev[0]->name);
4090                         pAC->RlmtMode = 0;
4091                 }
4092         }
4093         else {
4094                 pAC->RlmtMode = 0;
4095         }
4096 } /* GetConfiguration */
4097
4098
4099 /*****************************************************************************
4100  *
4101  *      ProductStr - return a adapter identification string from vpd
4102  *
4103  * Description:
4104  *      This function reads the product name string from the vpd area
4105  *      and puts it the field pAC->DeviceString.
4106  *
4107  * Returns: N/A
4108  */
4109 static void ProductStr(
4110 SK_AC   *pAC            /* pointer to adapter context */
4111 )
4112 {
4113 int     StrLen = 80;            /* length of the string, defined in SK_AC */
4114 char    Keyword[] = VPD_NAME;   /* vpd productname identifier */
4115 int     ReturnCode;             /* return code from vpd_read */
4116 unsigned long Flags;
4117
4118         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
4119         ReturnCode = VpdRead(pAC, pAC->IoBase, Keyword, pAC->DeviceStr,
4120                 &StrLen);
4121         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
4122         if (ReturnCode != 0) {
4123                 /* there was an error reading the vpd data */
4124                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ERROR,
4125                         ("Error reading VPD data: %d\n", ReturnCode));
4126                 pAC->DeviceStr[0] = '\0';
4127         }
4128 } /* ProductStr */
4129
4130
4131
4132
4133 /****************************************************************************/
4134 /* functions for common modules *********************************************/
4135 /****************************************************************************/
4136
4137
4138 /*****************************************************************************
4139  *
4140  *      SkDrvAllocRlmtMbuf - allocate an RLMT mbuf
4141  *
4142  * Description:
4143  *      This routine returns an RLMT mbuf or NULL. The RLMT Mbuf structure
4144  *      is embedded into a socket buff data area.
4145  *
4146  * Context:
4147  *      runtime
4148  *
4149  * Returns:
4150  *      NULL or pointer to Mbuf.
4151  */
4152 SK_MBUF *SkDrvAllocRlmtMbuf(
4153 SK_AC           *pAC,           /* pointer to adapter context */
4154 SK_IOC          IoC,            /* the IO-context */
4155 unsigned        BufferSize)     /* size of the requested buffer */
4156 {
4157 SK_MBUF         *pRlmtMbuf;     /* pointer to a new rlmt-mbuf structure */
4158 struct sk_buff  *pMsgBlock;     /* pointer to a new message block */
4159
4160         pMsgBlock = alloc_skb(BufferSize + sizeof(SK_MBUF), GFP_ATOMIC);
4161         if (pMsgBlock == NULL) {
4162                 return (NULL);
4163         }
4164         pRlmtMbuf = (SK_MBUF*) pMsgBlock->data;
4165         skb_reserve(pMsgBlock, sizeof(SK_MBUF));
4166         pRlmtMbuf->pNext = NULL;
4167         pRlmtMbuf->pOs = pMsgBlock;
4168         pRlmtMbuf->pData = pMsgBlock->data;     /* Data buffer. */
4169         pRlmtMbuf->Size = BufferSize;           /* Data buffer size. */
4170         pRlmtMbuf->Length = 0;          /* Length of packet (<= Size). */
4171         return (pRlmtMbuf);
4172
4173 } /* SkDrvAllocRlmtMbuf */
4174
4175
4176 /*****************************************************************************
4177  *
4178  *      SkDrvFreeRlmtMbuf - free an RLMT mbuf
4179  *
4180  * Description:
4181  *      This routine frees one or more RLMT mbuf(s).
4182  *
4183  * Context:
4184  *      runtime
4185  *
4186  * Returns:
4187  *      Nothing
4188  */
4189 void  SkDrvFreeRlmtMbuf(
4190 SK_AC           *pAC,           /* pointer to adapter context */
4191 SK_IOC          IoC,            /* the IO-context */
4192 SK_MBUF         *pMbuf)         /* size of the requested buffer */
4193 {
4194 SK_MBUF         *pFreeMbuf;
4195 SK_MBUF         *pNextMbuf;
4196
4197         pFreeMbuf = pMbuf;
4198         do {
4199                 pNextMbuf = pFreeMbuf->pNext;
4200                 DEV_KFREE_SKB_ANY(pFreeMbuf->pOs);
4201                 pFreeMbuf = pNextMbuf;
4202         } while ( pFreeMbuf != NULL );
4203 } /* SkDrvFreeRlmtMbuf */
4204
4205
4206 /*****************************************************************************
4207  *
4208  *      SkOsGetTime - provide a time value
4209  *
4210  * Description:
4211  *      This routine provides a time value. The unit is 1/HZ (defined by Linux).
4212  *      It is not used for absolute time, but only for time differences.
4213  *
4214  *
4215  * Returns:
4216  *      Time value
4217  */
4218 SK_U64 SkOsGetTime(SK_AC *pAC)
4219 {
4220 #if 0
4221         return jiffies;
4222 #else
4223         return get_timer(0);
4224 #endif
4225 } /* SkOsGetTime */
4226
4227
4228 /*****************************************************************************
4229  *
4230  *      SkPciReadCfgDWord - read a 32 bit value from pci config space
4231  *
4232  * Description:
4233  *      This routine reads a 32 bit value from the pci configuration
4234  *      space.
4235  *
4236  * Returns:
4237  *      0 - indicate everything worked ok.
4238  *      != 0 - error indication
4239  */
4240 int SkPciReadCfgDWord(
4241 SK_AC *pAC,             /* Adapter Control structure pointer */
4242 int PciAddr,            /* PCI register address */
4243 SK_U32 *pVal)           /* pointer to store the read value */
4244 {
4245         pci_read_config_dword(pAC->PciDev, PciAddr, pVal);
4246         return(0);
4247 } /* SkPciReadCfgDWord */
4248
4249
4250 /*****************************************************************************
4251  *
4252  *      SkPciReadCfgWord - read a 16 bit value from pci config space
4253  *
4254  * Description:
4255  *      This routine reads a 16 bit value from the pci configuration
4256  *      space.
4257  *
4258  * Returns:
4259  *      0 - indicate everything worked ok.
4260  *      != 0 - error indication
4261  */
4262 int SkPciReadCfgWord(
4263 SK_AC *pAC,     /* Adapter Control structure pointer */
4264 int PciAddr,            /* PCI register address */
4265 SK_U16 *pVal)           /* pointer to store the read value */
4266 {
4267         pci_read_config_word(pAC->PciDev, PciAddr, pVal);
4268         return(0);
4269 } /* SkPciReadCfgWord */
4270
4271
4272 /*****************************************************************************
4273  *
4274  *      SkPciReadCfgByte - read a 8 bit value from pci config space
4275  *
4276  * Description:
4277  *      This routine reads a 8 bit value from the pci configuration
4278  *      space.
4279  *
4280  * Returns:
4281  *      0 - indicate everything worked ok.
4282  *      != 0 - error indication
4283  */
4284 int SkPciReadCfgByte(
4285 SK_AC *pAC,     /* Adapter Control structure pointer */
4286 int PciAddr,            /* PCI register address */
4287 SK_U8 *pVal)            /* pointer to store the read value */
4288 {
4289         pci_read_config_byte(pAC->PciDev, PciAddr, pVal);
4290         return(0);
4291 } /* SkPciReadCfgByte */
4292
4293
4294 /*****************************************************************************
4295  *
4296  *      SkPciWriteCfgDWord - write a 32 bit value to pci config space
4297  *
4298  * Description:
4299  *      This routine writes a 32 bit value to the pci configuration
4300  *      space.
4301  *
4302  * Returns:
4303  *      0 - indicate everything worked ok.
4304  *      != 0 - error indication
4305  */
4306 int SkPciWriteCfgDWord(
4307 SK_AC *pAC,     /* Adapter Control structure pointer */
4308 int PciAddr,            /* PCI register address */
4309 SK_U32 Val)             /* pointer to store the read value */
4310 {
4311         pci_write_config_dword(pAC->PciDev, PciAddr, Val);
4312         return(0);
4313 } /* SkPciWriteCfgDWord */
4314
4315
4316 /*****************************************************************************
4317  *
4318  *      SkPciWriteCfgWord - write a 16 bit value to pci config space
4319  *
4320  * Description:
4321  *      This routine writes a 16 bit value to the pci configuration
4322  *      space. The flag PciConfigUp indicates whether the config space
4323  *      is accesible or must be set up first.
4324  *
4325  * Returns:
4326  *      0 - indicate everything worked ok.
4327  *      != 0 - error indication
4328  */
4329 int SkPciWriteCfgWord(
4330 SK_AC *pAC,     /* Adapter Control structure pointer */
4331 int PciAddr,            /* PCI register address */
4332 SK_U16 Val)             /* pointer to store the read value */
4333 {
4334         pci_write_config_word(pAC->PciDev, PciAddr, Val);
4335         return(0);
4336 } /* SkPciWriteCfgWord */
4337
4338
4339 /*****************************************************************************
4340  *
4341  *      SkPciWriteCfgWord - write a 8 bit value to pci config space
4342  *
4343  * Description:
4344  *      This routine writes a 8 bit value to the pci configuration
4345  *      space. The flag PciConfigUp indicates whether the config space
4346  *      is accesible or must be set up first.
4347  *
4348  * Returns:
4349  *      0 - indicate everything worked ok.
4350  *      != 0 - error indication
4351  */
4352 int SkPciWriteCfgByte(
4353 SK_AC *pAC,     /* Adapter Control structure pointer */
4354 int PciAddr,            /* PCI register address */
4355 SK_U8 Val)              /* pointer to store the read value */
4356 {
4357         pci_write_config_byte(pAC->PciDev, PciAddr, Val);
4358         return(0);
4359 } /* SkPciWriteCfgByte */
4360
4361
4362 /*****************************************************************************
4363  *
4364  *      SkDrvEvent - handle driver events
4365  *
4366  * Description:
4367  *      This function handles events from all modules directed to the driver
4368  *
4369  * Context:
4370  *      Is called under protection of slow path lock.
4371  *
4372  * Returns:
4373  *      0 if everything ok
4374  *      < 0  on error
4375  *
4376  */
4377 int SkDrvEvent(
4378 SK_AC *pAC,             /* pointer to adapter context */
4379 SK_IOC IoC,             /* io-context */
4380 SK_U32 Event,           /* event-id */
4381 SK_EVPARA Param)        /* event-parameter */
4382 {
4383 SK_MBUF         *pRlmtMbuf;     /* pointer to a rlmt-mbuf structure */
4384 struct sk_buff  *pMsg;          /* pointer to a message block */
4385 int             FromPort;       /* the port from which we switch away */
4386 int             ToPort;         /* the port we switch to */
4387 SK_EVPARA       NewPara;        /* parameter for further events */
4388 #if 0
4389 int             Stat;
4390 #endif
4391 unsigned long   Flags;
4392 SK_BOOL         DualNet;
4393
4394         switch (Event) {
4395         case SK_DRV_ADAP_FAIL:
4396                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4397                         ("ADAPTER FAIL EVENT\n"));
4398                 printk("%s: Adapter failed.\n", pAC->dev[0]->name);
4399                 /* disable interrupts */
4400                 SK_OUT32(pAC->IoBase, B0_IMSK, 0);
4401                 /* cgoos */
4402                 break;
4403         case SK_DRV_PORT_FAIL:
4404                 FromPort = Param.Para32[0];
4405                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4406                         ("PORT FAIL EVENT, Port: %d\n", FromPort));
4407                 if (FromPort == 0) {
4408                         printk("%s: Port A failed.\n", pAC->dev[0]->name);
4409                 } else {
4410                         printk("%s: Port B failed.\n", pAC->dev[1]->name);
4411                 }
4412                 /* cgoos */
4413                 break;
4414         case SK_DRV_PORT_RESET:  /* SK_U32 PortIdx */
4415                 /* action list 4 */
4416                 FromPort = Param.Para32[0];
4417                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4418                         ("PORT RESET EVENT, Port: %d ", FromPort));
4419                 NewPara.Para64 = FromPort;
4420                 SkPnmiEvent(pAC, IoC, SK_PNMI_EVT_XMAC_RESET, NewPara);
4421                 spin_lock_irqsave(
4422                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4423                         Flags);
4424                 SkGeStopPort(pAC, IoC, FromPort, SK_STOP_ALL, SK_HARD_RST);
4425 #if 0
4426                 pAC->dev[Param.Para32[0]]->flags &= ~IFF_RUNNING;
4427 #endif
4428                 spin_unlock_irqrestore(
4429                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4430                         Flags);
4431
4432                 /* clear rx ring from received frames */
4433                 ReceiveIrq(pAC, &pAC->RxPort[FromPort], SK_FALSE);
4434
4435                 ClearTxRing(pAC, &pAC->TxPort[FromPort][TX_PRIO_LOW]);
4436                 spin_lock_irqsave(
4437                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4438                         Flags);
4439
4440                 /* tschilling: Handling of return value inserted. */
4441                 if (SkGeInitPort(pAC, IoC, FromPort)) {
4442                         if (FromPort == 0) {
4443                                 printk("%s: SkGeInitPort A failed.\n", pAC->dev[0]->name);
4444                         } else {
4445                                 printk("%s: SkGeInitPort B failed.\n", pAC->dev[1]->name);
4446                         }
4447                 }
4448                 SkAddrMcUpdate(pAC,IoC, FromPort);
4449                 PortReInitBmu(pAC, FromPort);
4450                 SkGePollTxD(pAC, IoC, FromPort, SK_TRUE);
4451                 ClearAndStartRx(pAC, FromPort);
4452                 spin_unlock_irqrestore(
4453                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4454                         Flags);
4455                 break;
4456         case SK_DRV_NET_UP:      /* SK_U32 PortIdx */
4457                 /* action list 5 */
4458                 FromPort = Param.Para32[0];
4459                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4460                         ("NET UP EVENT, Port: %d ", Param.Para32[0]));
4461 #ifdef SK98_INFO
4462                 printk("%s: network connection up using"
4463                         " port %c\n", pAC->dev[Param.Para32[0]]->name, 'A'+Param.Para32[0]);
4464
4465                 /* tschilling: Values changed according to LinkSpeedUsed. */
4466                 Stat = pAC->GIni.GP[FromPort].PLinkSpeedUsed;
4467                 if (Stat == SK_LSPEED_STAT_10MBPS) {
4468                         printk("    speed:           10\n");
4469                 } else if (Stat == SK_LSPEED_STAT_100MBPS) {
4470                         printk("    speed:           100\n");
4471                 } else if (Stat == SK_LSPEED_STAT_1000MBPS) {
4472                         printk("    speed:           1000\n");
4473                 } else {
4474                         printk("    speed:           unknown\n");
4475                 }
4476
4477                 Stat = pAC->GIni.GP[FromPort].PLinkModeStatus;
4478                 if (Stat == SK_LMODE_STAT_AUTOHALF ||
4479                         Stat == SK_LMODE_STAT_AUTOFULL) {
4480                         printk("    autonegotiation: yes\n");
4481                 }
4482                 else {
4483                         printk("    autonegotiation: no\n");
4484                 }
4485                 if (Stat == SK_LMODE_STAT_AUTOHALF ||
4486                         Stat == SK_LMODE_STAT_HALF) {
4487                         printk("    duplex mode:     half\n");
4488                 }
4489                 else {
4490                         printk("    duplex mode:     full\n");
4491                 }
4492                 Stat = pAC->GIni.GP[FromPort].PFlowCtrlStatus;
4493                 if (Stat == SK_FLOW_STAT_REM_SEND ) {
4494                         printk("    flowctrl:        remote send\n");
4495                 }
4496                 else if (Stat == SK_FLOW_STAT_LOC_SEND ){
4497                         printk("    flowctrl:        local send\n");
4498                 }
4499                 else if (Stat == SK_FLOW_STAT_SYMMETRIC ){
4500                         printk("    flowctrl:        symmetric\n");
4501                 }
4502                 else {
4503                         printk("    flowctrl:        none\n");
4504                 }
4505
4506                 /* tschilling: Check against CopperType now. */
4507                 if ((pAC->GIni.GICopperType == SK_TRUE) &&
4508                         (pAC->GIni.GP[FromPort].PLinkSpeedUsed ==
4509                         SK_LSPEED_STAT_1000MBPS)) {
4510                         Stat = pAC->GIni.GP[FromPort].PMSStatus;
4511                         if (Stat == SK_MS_STAT_MASTER ) {
4512                                 printk("    role:            master\n");
4513                         }
4514                         else if (Stat == SK_MS_STAT_SLAVE ) {
4515                                 printk("    role:            slave\n");
4516                         }
4517                         else {
4518                                 printk("    role:            ???\n");
4519                         }
4520                 }
4521
4522 #ifdef SK_ZEROCOPY
4523                 if (pAC->GIni.GIChipId == CHIP_ID_YUKON)
4524                         printk("    scatter-gather:  enabled\n");
4525                 else
4526                         printk("    scatter-gather:  disabled\n");
4527
4528 #else
4529                         printk("    scatter-gather:  disabled\n");
4530 #endif
4531 #endif /* SK98_INFO */
4532
4533                 if ((Param.Para32[0] != pAC->ActivePort) &&
4534                         (pAC->RlmtNets == 1)) {
4535                         NewPara.Para32[0] = pAC->ActivePort;
4536                         NewPara.Para32[1] = Param.Para32[0];
4537                         SkEventQueue(pAC, SKGE_DRV, SK_DRV_SWITCH_INTERN,
4538                                 NewPara);
4539                 }
4540
4541                 /* Inform the world that link protocol is up. */
4542 #if 0
4543                 pAC->dev[Param.Para32[0]]->flags |= IFF_RUNNING;
4544 #endif
4545
4546                 break;
4547         case SK_DRV_NET_DOWN:    /* SK_U32 Reason */
4548                 /* action list 7 */
4549                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4550                         ("NET DOWN EVENT "));
4551 #ifdef SK98_INFO
4552                 printk("%s: network connection down\n", pAC->dev[Param.Para32[1]]->name);
4553 #endif
4554 #if 0
4555                 pAC->dev[Param.Para32[1]]->flags &= ~IFF_RUNNING;
4556 #endif
4557                 break;
4558         case SK_DRV_SWITCH_HARD: /* SK_U32 FromPortIdx SK_U32 ToPortIdx */
4559                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4560                         ("PORT SWITCH HARD "));
4561         case SK_DRV_SWITCH_SOFT: /* SK_U32 FromPortIdx SK_U32 ToPortIdx */
4562         /* action list 6 */
4563                 printk("%s: switching to port %c\n", pAC->dev[0]->name,
4564                         'A'+Param.Para32[1]);
4565         case SK_DRV_SWITCH_INTERN: /* SK_U32 FromPortIdx SK_U32 ToPortIdx */
4566                 FromPort = Param.Para32[0];
4567                 ToPort = Param.Para32[1];
4568                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4569                         ("PORT SWITCH EVENT, From: %d  To: %d (Pref %d) ",
4570                         FromPort, ToPort, pAC->Rlmt.Net[0].PrefPort));
4571                 NewPara.Para64 = FromPort;
4572                 SkPnmiEvent(pAC, IoC, SK_PNMI_EVT_XMAC_RESET, NewPara);
4573                 NewPara.Para64 = ToPort;
4574                 SkPnmiEvent(pAC, IoC, SK_PNMI_EVT_XMAC_RESET, NewPara);
4575                 spin_lock_irqsave(
4576                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4577                         Flags);
4578                 spin_lock_irqsave(
4579                         &pAC->TxPort[ToPort][TX_PRIO_LOW].TxDesRingLock, Flags);
4580                 SkGeStopPort(pAC, IoC, FromPort, SK_STOP_ALL, SK_SOFT_RST);
4581                 SkGeStopPort(pAC, IoC, ToPort, SK_STOP_ALL, SK_SOFT_RST);
4582                 spin_unlock_irqrestore(
4583                         &pAC->TxPort[ToPort][TX_PRIO_LOW].TxDesRingLock, Flags);
4584                 spin_unlock_irqrestore(
4585                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4586                         Flags);
4587
4588                 ReceiveIrq(pAC, &pAC->RxPort[FromPort], SK_FALSE); /* clears rx ring */
4589                 ReceiveIrq(pAC, &pAC->RxPort[ToPort], SK_FALSE); /* clears rx ring */
4590
4591                 ClearTxRing(pAC, &pAC->TxPort[FromPort][TX_PRIO_LOW]);
4592                 ClearTxRing(pAC, &pAC->TxPort[ToPort][TX_PRIO_LOW]);
4593                 spin_lock_irqsave(
4594                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4595                         Flags);
4596                 spin_lock_irqsave(
4597                         &pAC->TxPort[ToPort][TX_PRIO_LOW].TxDesRingLock, Flags);
4598                 pAC->ActivePort = ToPort;
4599 #if 0
4600                 SetQueueSizes(pAC);
4601 #else
4602                 /* tschilling: New common function with minimum size check. */
4603                 DualNet = SK_FALSE;
4604                 if (pAC->RlmtNets == 2) {
4605                         DualNet = SK_TRUE;
4606                 }
4607
4608                 if (SkGeInitAssignRamToQueues(
4609                         pAC,
4610                         pAC->ActivePort,
4611                         DualNet)) {
4612                         spin_unlock_irqrestore(
4613                                 &pAC->TxPort[ToPort][TX_PRIO_LOW].TxDesRingLock, Flags);
4614                         spin_unlock_irqrestore(
4615                                 &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4616                                 Flags);
4617                         printk("SkGeInitAssignRamToQueues failed.\n");
4618                         break;
4619                 }
4620 #endif
4621                 /* tschilling: Handling of return values inserted. */
4622                 if (SkGeInitPort(pAC, IoC, FromPort) ||
4623                         SkGeInitPort(pAC, IoC, ToPort)) {
4624                         printk("%s: SkGeInitPort failed.\n", pAC->dev[0]->name);
4625                 }
4626                 if (Event == SK_DRV_SWITCH_SOFT) {
4627                         SkMacRxTxEnable(pAC, IoC, FromPort);
4628                 }
4629                 SkMacRxTxEnable(pAC, IoC, ToPort);
4630                 SkAddrSwap(pAC, IoC, FromPort, ToPort);
4631                 SkAddrMcUpdate(pAC, IoC, FromPort);
4632                 SkAddrMcUpdate(pAC, IoC, ToPort);
4633                 PortReInitBmu(pAC, FromPort);
4634                 PortReInitBmu(pAC, ToPort);
4635                 SkGePollTxD(pAC, IoC, FromPort, SK_TRUE);
4636                 SkGePollTxD(pAC, IoC, ToPort, SK_TRUE);
4637                 ClearAndStartRx(pAC, FromPort);
4638                 ClearAndStartRx(pAC, ToPort);
4639                 spin_unlock_irqrestore(
4640                         &pAC->TxPort[ToPort][TX_PRIO_LOW].TxDesRingLock, Flags);
4641                 spin_unlock_irqrestore(
4642                         &pAC->TxPort[FromPort][TX_PRIO_LOW].TxDesRingLock,
4643                         Flags);
4644                 break;
4645         case SK_DRV_RLMT_SEND:   /* SK_MBUF *pMb */
4646                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4647                         ("RLS "));
4648                 pRlmtMbuf = (SK_MBUF*) Param.pParaPtr;
4649                 pMsg = (struct sk_buff*) pRlmtMbuf->pOs;
4650                 skb_put(pMsg, pRlmtMbuf->Length);
4651                 if (XmitFrame(pAC, &pAC->TxPort[pRlmtMbuf->PortIdx][TX_PRIO_LOW],
4652                         pMsg) < 0)
4653
4654                         DEV_KFREE_SKB_ANY(pMsg);
4655                 break;
4656         default:
4657                 break;
4658         }
4659         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_EVENT,
4660                 ("END EVENT "));
4661
4662         return (0);
4663 } /* SkDrvEvent */
4664
4665
4666 /*****************************************************************************
4667  *
4668  *      SkErrorLog - log errors
4669  *
4670  * Description:
4671  *      This function logs errors to the system buffer and to the console
4672  *
4673  * Returns:
4674  *      0 if everything ok
4675  *      < 0  on error
4676  *
4677  */
4678 void SkErrorLog(
4679 SK_AC   *pAC,
4680 int     ErrClass,
4681 int     ErrNum,
4682 char    *pErrorMsg)
4683 {
4684 char    ClassStr[80];
4685
4686         switch (ErrClass) {
4687         case SK_ERRCL_OTHER:
4688                 strcpy(ClassStr, "Other error");
4689                 break;
4690         case SK_ERRCL_CONFIG:
4691                 strcpy(ClassStr, "Configuration error");
4692                 break;
4693         case SK_ERRCL_INIT:
4694                 strcpy(ClassStr, "Initialization error");
4695                 break;
4696         case SK_ERRCL_NORES:
4697                 strcpy(ClassStr, "Out of resources error");
4698                 break;
4699         case SK_ERRCL_SW:
4700                 strcpy(ClassStr, "internal Software error");
4701                 break;
4702         case SK_ERRCL_HW:
4703                 strcpy(ClassStr, "Hardware failure");
4704                 break;
4705         case SK_ERRCL_COMM:
4706                 strcpy(ClassStr, "Communication error");
4707                 break;
4708         }
4709         printk(KERN_INFO "%s: -- ERROR --\n        Class:  %s\n"
4710                 "        Nr:  0x%x\n        Msg:  %s\n", pAC->dev[0]->name,
4711                 ClassStr, ErrNum, pErrorMsg);
4712
4713 } /* SkErrorLog */
4714
4715 #ifdef DEBUG
4716 /****************************************************************************/
4717 /* "debug only" section *****************************************************/
4718 /****************************************************************************/
4719
4720
4721 /*****************************************************************************
4722  *
4723  *      DumpMsg - print a frame
4724  *
4725  * Description:
4726  *      This function prints frames to the system logfile/to the console.
4727  *
4728  * Returns: N/A
4729  *
4730  */
4731 static void DumpMsg(struct sk_buff *skb, char *str)
4732 {
4733         int     msglen;
4734
4735         if (skb == NULL) {
4736                 printk("DumpMsg(): NULL-Message\n");
4737                 return;
4738         }
4739
4740         if (skb->data == NULL) {
4741                 printk("DumpMsg(): Message empty\n");
4742                 return;
4743         }
4744
4745         msglen = skb->len;
4746         if (msglen > 64)
4747                 msglen = 64;
4748
4749         printk("--- Begin of message from %s , len %d (from %d) ----\n", str, msglen, skb->len);
4750
4751         DumpData((char *)skb->data, msglen);
4752
4753         printk("------- End of message ---------\n");
4754 } /* DumpMsg */
4755
4756
4757
4758 /*****************************************************************************
4759  *
4760  *      DumpData - print a data area
4761  *
4762  * Description:
4763  *      This function prints a area of data to the system logfile/to the
4764  *      console.
4765  *
4766  * Returns: N/A
4767  *
4768  */
4769 static void DumpData(char *p, int size)
4770 {
4771 register int    i;
4772 int     haddr, addr;
4773 char    hex_buffer[180];
4774 char    asc_buffer[180];
4775 char    HEXCHAR[] = "0123456789ABCDEF";
4776
4777         addr = 0;
4778         haddr = 0;
4779         hex_buffer[0] = 0;
4780         asc_buffer[0] = 0;
4781         for (i=0; i < size; ) {
4782                 if (*p >= '0' && *p <='z')
4783                         asc_buffer[addr] = *p;
4784                 else
4785                         asc_buffer[addr] = '.';
4786                 addr++;
4787                 asc_buffer[addr] = 0;
4788                 hex_buffer[haddr] = HEXCHAR[(*p & 0xf0) >> 4];
4789                 haddr++;
4790                 hex_buffer[haddr] = HEXCHAR[*p & 0x0f];
4791                 haddr++;
4792                 hex_buffer[haddr] = ' ';
4793                 haddr++;
4794                 hex_buffer[haddr] = 0;
4795                 p++;
4796                 i++;
4797                 if (i%16 == 0) {
4798                         printk("%s  %s\n", hex_buffer, asc_buffer);
4799                         addr = 0;
4800                         haddr = 0;
4801                 }
4802         }
4803 } /* DumpData */
4804
4805
4806 /*****************************************************************************
4807  *
4808  *      DumpLong - print a data area as long values
4809  *
4810  * Description:
4811  *      This function prints a area of data to the system logfile/to the
4812  *      console.
4813  *
4814  * Returns: N/A
4815  *
4816  */
4817 static void DumpLong(char *pc, int size)
4818 {
4819 register int    i;
4820 int     haddr, addr;
4821 char    hex_buffer[180];
4822 char    asc_buffer[180];
4823 char    HEXCHAR[] = "0123456789ABCDEF";
4824 long    *p;
4825 int     l;
4826
4827         addr = 0;
4828         haddr = 0;
4829         hex_buffer[0] = 0;
4830         asc_buffer[0] = 0;
4831         p = (long*) pc;
4832         for (i=0; i < size; ) {
4833                 l = (long) *p;
4834                 hex_buffer[haddr] = HEXCHAR[(l >> 28) & 0xf];
4835                 haddr++;
4836                 hex_buffer[haddr] = HEXCHAR[(l >> 24) & 0xf];
4837                 haddr++;
4838                 hex_buffer[haddr] = HEXCHAR[(l >> 20) & 0xf];
4839                 haddr++;
4840                 hex_buffer[haddr] = HEXCHAR[(l >> 16) & 0xf];
4841                 haddr++;
4842                 hex_buffer[haddr] = HEXCHAR[(l >> 12) & 0xf];
4843                 haddr++;
4844                 hex_buffer[haddr] = HEXCHAR[(l >> 8) & 0xf];
4845                 haddr++;
4846                 hex_buffer[haddr] = HEXCHAR[(l >> 4) & 0xf];
4847                 haddr++;
4848                 hex_buffer[haddr] = HEXCHAR[l & 0x0f];
4849                 haddr++;
4850                 hex_buffer[haddr] = ' ';
4851                 haddr++;
4852                 hex_buffer[haddr] = 0;
4853                 p++;
4854                 i++;
4855                 if (i%8 == 0) {
4856                         printk("%4x %s\n", (i-8)*4, hex_buffer);
4857                         haddr = 0;
4858                 }
4859         }
4860         printk("------------------------\n");
4861 } /* DumpLong */
4862
4863 #endif
4864
4865 /*
4866  * Local variables:
4867  * compile-command: "make"
4868  * End:
4869  */
4870