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 <config.h>
 344
 345 #ifdef CONFIG_SK98
 346
 347 #include        "h/skversion.h"
 348 #if 0
 349 #include        <linux/module.h>
 350 #include        <linux/init.h>
 351 #include        <linux/proc_fs.h>
 352 #endif
 353 #include        "h/skdrv1st.h"
 354 #include        "h/skdrv2nd.h"
 355
 356
 357 /* defines ******************************************************************/
 358 /* for debuging on x86 only */
 359 /* #define BREAKPOINT() asm(" int $3"); */
 360
 361 /* use the scatter-gather functionality with sendfile() */
 362 #if 0
 363 #define SK_ZEROCOPY
 364 #endif
 365
 366 /* use of a transmit complete interrupt */
 367 #define USE_TX_COMPLETE
 368
 369 /* use interrupt moderation (for tx complete only) */
 370 #define USE_INT_MOD
 371 #define INTS_PER_SEC    1000
 372
 373 /*
 374  * threshold for copying small receive frames
 375  * set to 0 to avoid copying, set to 9001 to copy all frames
 376  */
 377 #define SK_COPY_THRESHOLD       50
 378
 379 /* number of adapters that can be configured via command line params */
 380 #define SK_MAX_CARD_PARAM       16
 381
 382
 383 /*
 384  * use those defines for a compile-in version of the driver instead
 385  * of command line parameters
 386  */
 387 /* #define LINK_SPEED_A {"Auto", }              */
 388 /* #define LINK_SPEED_B {"Auto", }              */
 389 /* #define AUTO_NEG_A   {"Sense", }             */
 390 /* #define AUTO_NEG_B   {"Sense", }             */
 391 /* #define DUP_CAP_A    {"Both", }              */
 392 /* #define DUP_CAP_B    {"Both", }              */
 393 /* #define FLOW_CTRL_A  {"SymOrRem", }          */
 394 /* #define FLOW_CTRL_B  {"SymOrRem", }          */
 395 /* #define ROLE_A       {"Auto", }              */
 396 /* #define ROLE_B       {"Auto", }              */
 397 /* #define PREF_PORT    {"A", }                 */
 398 /* #define RLMT_MODE    {"CheckLinkState", }    */
 399
 400 #define DEV_KFREE_SKB(skb) dev_kfree_skb(skb)
 401 #define DEV_KFREE_SKB_IRQ(skb) dev_kfree_skb_irq(skb)
 402 #define DEV_KFREE_SKB_ANY(skb) dev_kfree_skb_any(skb)
 403
 404 /* function prototypes ******************************************************/
 405 static void     FreeResources(struct SK_NET_DEVICE *dev);
 406 static int      SkGeBoardInit(struct SK_NET_DEVICE *dev, SK_AC *pAC);
 407 static SK_BOOL  BoardAllocMem(SK_AC *pAC);
 408 static void     BoardFreeMem(SK_AC *pAC);
 409 static void     BoardInitMem(SK_AC *pAC);
 410 static void     SetupRing(SK_AC*, void*, uintptr_t, RXD**, RXD**, RXD**,
 411                         int*, SK_BOOL);
 412
 413 #if 0
 414 static void     SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs);
 415 static void     SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs);
 416 static int      SkGeOpen(struct SK_NET_DEVICE *dev);
 417 static int      SkGeClose(struct SK_NET_DEVICE *dev);
 418 static int      SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev);
 419 static int      SkGeSetMacAddr(struct SK_NET_DEVICE *dev, void *p);
 420 static void     SkGeSetRxMode(struct SK_NET_DEVICE *dev);
 421 static struct   net_device_stats *SkGeStats(struct SK_NET_DEVICE *dev);
 422 static int      SkGeIoctl(struct SK_NET_DEVICE *dev, struct ifreq *rq, int cmd);
 423 #else
 424 void    SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs);
 425 void    SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs);
 426 int     SkGeOpen(struct SK_NET_DEVICE *dev);
 427 int     SkGeClose(struct SK_NET_DEVICE *dev);
 428 int     SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev);
 429 #endif
 430 static void     GetConfiguration(SK_AC*);
 431 static void     ProductStr(SK_AC*);
 432 static int      XmitFrame(SK_AC*, TX_PORT*, struct sk_buff*);
 433 static void     FreeTxDescriptors(SK_AC*pAC, TX_PORT*);
 434 static void     FillRxRing(SK_AC*, RX_PORT*);
 435 static SK_BOOL  FillRxDescriptor(SK_AC*, RX_PORT*);
 436 #if 0
 437 static void     ReceiveIrq(SK_AC*, RX_PORT*, SK_BOOL);
 438 #else
 439 void    ReceiveIrq(SK_AC*, RX_PORT*, SK_BOOL);
 440 #endif
 441 static void ClearAndStartRx(SK_AC*, int);
 442 static void     ClearTxIrq(SK_AC*, int, int);
 443 static void     ClearRxRing(SK_AC*, RX_PORT*);
 444 static void     ClearTxRing(SK_AC*, TX_PORT*);
 445 #if 0
 446 static void     SetQueueSizes(SK_AC     *pAC);
 447
 448 static int      SkGeChangeMtu(struct SK_NET_DEVICE *dev, int new_mtu);
 449 #endif
 450 static void     PortReInitBmu(SK_AC*, int);
 451 #if 0
 452 static int      SkGeIocMib(DEV_NET*, unsigned int, int);
 453 static int      XmitFrameSG(SK_AC*, TX_PORT*, struct sk_buff*);
 454 #endif
 455
 456 /*Extern */
 457
 458 /* external Proc function */
 459 extern int proc_read(
 460         char    *buffer,
 461         char    **buffer_location,
 462         off_t   offset,
 463         int             buffer_length,
 464         int             *eof,
 465         void    *data);
 466
 467 #ifdef DEBUG
 468 static void     DumpMsg(struct sk_buff*, char*);
 469 static void     DumpData(char*, int);
 470 static void     DumpLong(char*, int);
 471 #endif
 472 void dump_frag( SK_U8 *data, int length);
 473
 474 /* global variables *********************************************************/
 475 #if 0
 476 static const char *BootString = BOOT_STRING;
 477 #endif
 478 struct SK_NET_DEVICE *SkGeRootDev = NULL;
 479 static int probed __initdata = 0;
 480
 481 /* local variables **********************************************************/
 482 static uintptr_t TxQueueAddr[SK_MAX_MACS][2] = {{0x680, 0x600},{0x780, 0x700}};
 483 static uintptr_t RxQueueAddr[SK_MAX_MACS] = {0x400, 0x480};
 484
 485
 486 /* local variables **********************************************************/
 487 const char SK_Root_Dir_entry[8];
 488
 489 #if 0
 490 static struct proc_dir_entry    *pSkRootDir;
 491 #endif
 492
 493
 494 static struct pci_device_id supported[] = {
 495         {PCI_VENDOR_ID_3COM, 0x1700},
 496         {PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE},
 497         {PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_YU},
 498         {}
 499 };
 500
 501
 502 /*****************************************************************************
 503  *
 504  *      skge_probe - find all SK-98xx adapters
 505  *
 506  * Description:
 507  *      This function scans the PCI bus for SK-98xx adapters. Resources for
 508  *      each adapter are allocated and the adapter is brought into Init 1
 509  *      state.
 510  *
 511  * Returns:
 512  *      0, if everything is ok
 513  *      !=0, on error
 514  */
 515 #if 0
 516 static int __init skge_probe (void)
 517 #else
 518 int skge_probe (struct eth_device ** ret_dev)
 519 #endif
 520 {
 521 #if 0
 522         int                     proc_root_initialized = 0;
 523 #endif
 524         int                     boards_found = 0;
 525 #if 0
 526         int                     vendor_flag = SK_FALSE;
 527 #endif
 528         SK_AC                   *pAC;
 529         DEV_NET                 *pNet = NULL;
 530 #if 0
 531         struct proc_dir_entry   *pProcFile;
 532         struct pci_dev  *pdev = NULL;
 533         unsigned long           base_address;
 534 #else
 535         u32                     base_address;
 536 #endif
 537         struct SK_NET_DEVICE *dev = NULL;
 538 #if 0
 539         SK_BOOL DeviceFound = SK_FALSE;
 540 #endif
 541         SK_BOOL BootStringCount = SK_FALSE;
 542 #if 1
 543         pci_dev_t devno;
 544 #endif
 545
 546         if (probed)
 547                 return -ENODEV;
 548         probed++;
 549
 550         if (!pci_present())             /* is PCI support present? */
 551                 return -ENODEV;
 552
 553 #if 0
 554                 while((pdev = pci_find_class(PCI_CLASS_NETWORK_ETHERNET << 8, pdev)))
 555 #else
 556                 while((devno = pci_find_devices (supported, boards_found)) >= 0)
 557 #endif
 558                 {
 559
 560                 dev = NULL;
 561                 pNet = NULL;
 562
 563
 564 #if 0
 565                 SK_PCI_ISCOMPLIANT(vendor_flag, pdev);
 566                 if (!vendor_flag)
 567                         continue;
 568 #endif
 569
 570 /*              if ((pdev->vendor != PCI_VENDOR_ID_SYSKONNECT) &&
 571                         ((pdev->device != PCI_DEVICE_ID_SYSKONNECT_GE) ||
 572                         (pdev->device != PCI_DEVICE_ID_SYSKONNECT_YU))){
 573                         continue;
 574                 }
 575 */
 576 #if 0
 577                 /* Configure DMA attributes. */
 578                 if (pci_set_dma_mask(pdev, (u64) 0xffffffffffffffff) &&
 579                         pci_set_dma_mask(pdev, (u64) 0xffffffff))
 580                         continue;
 581 #endif
 582
 583
 584 #if 0
 585                 if ((dev = init_etherdev(dev, sizeof(DEV_NET))) == NULL) {
 586                         printk(KERN_ERR "Unable to allocate etherdev "
 587                                "structure!\n");
 588                         break;
 589                 }
 590 #else
 591                 dev = malloc (sizeof *dev);
 592                 memset(dev, 0, sizeof(*dev));
 593                 dev->priv = malloc(sizeof(DEV_NET));
 594 #endif
 595
 596                 if (dev->priv == NULL) {
 597                         printk(KERN_ERR "Unable to allocate adapter "
 598                                "structure!\n");
 599                         break;
 600                 }
 601
 602                 pNet = dev->priv;
 603                 pNet->pAC = kmalloc(sizeof(SK_AC), GFP_KERNEL);
 604                 if (pNet->pAC == NULL){
 605                         kfree(dev->priv);
 606                         printk(KERN_ERR "Unable to allocate adapter "
 607                                "structure!\n");
 608                         break;
 609                 }
 610
 611                 /* Print message */
 612                 if (!BootStringCount) {
 613                         /* set display flag to TRUE so that */
 614                         /* we only display this string ONCE */
 615                         BootStringCount = SK_TRUE;
 616 #ifdef SK98_INFO
 617                         printk("%s\n", BootString);
 618 #endif
 619                 }
 620
 621                 memset(pNet->pAC, 0, sizeof(SK_AC));
 622                 pAC = pNet->pAC;
 623 #if 0
 624                 pAC->PciDev = pdev;
 625                 pAC->PciDevId = pdev->device;
 626                 pAC->dev[0] = dev;
 627                 pAC->dev[1] = dev;
 628 #else
 629                 pAC->PciDev = devno;
 630                 ret_dev[0] = pAC->dev[0] = dev;
 631                 ret_dev[1] = pAC->dev[1] = dev;
 632 #endif
 633                 sprintf(pAC->Name, "SysKonnect SK-98xx");
 634                 pAC->CheckQueue = SK_FALSE;
 635
 636                 pNet->Mtu = 1500;
 637                 pNet->Up = 0;
 638 #if 0
 639                 dev->irq = pdev->irq;
 640
 641                 dev->open =             &SkGeOpen;
 642                 dev->stop =             &SkGeClose;
 643                 dev->hard_start_xmit =  &SkGeXmit;
 644                 dev->get_stats =        &SkGeStats;
 645                 dev->set_multicast_list = &SkGeSetRxMode;
 646                 dev->set_mac_address =  &SkGeSetMacAddr;
 647                 dev->do_ioctl =         &SkGeIoctl;
 648                 dev->change_mtu =       &SkGeChangeMtu;
 649                 dev->flags &=           ~IFF_RUNNING;
 650 #endif
 651
 652 #ifdef SK_ZEROCOPY
 653                 if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 654                         /* Use only if yukon hardware */
 655                         /* SK and ZEROCOPY - fly baby... */
 656                         dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 657                 }
 658 #endif
 659
 660 #if 0
 661                 /*
 662                  * Dummy value.
 663                  */
 664                 dev->base_addr = 42;
 665                 pci_set_master(pdev);
 666
 667                 pci_set_master(pdev);
 668                 base_address = pci_resource_start (pdev, 0);
 669 #else
 670                 pci_write_config_dword(devno,
 671                                        PCI_COMMAND,
 672                                        PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
 673                 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0,
 674                                        &base_address);
 675 #endif
 676
 677 #ifdef SK_BIG_ENDIAN
 678                 /*
 679                  * On big endian machines, we use the adapter's aibility of
 680                  * reading the descriptors as big endian.
 681                  */
 682                 {
 683                 SK_U32          our2;
 684                         SkPciReadCfgDWord(pAC, PCI_OUR_REG_2, &our2);
 685                         our2 |= PCI_REV_DESC;
 686                         SkPciWriteCfgDWord(pAC, PCI_OUR_REG_2, our2);
 687                 }
 688 #endif
 689
 690                 /*
 691                  * Remap the regs into kernel space.
 692                  */
 693 #if 0
 694                 pAC->IoBase = (char*)ioremap(base_address, 0x4000);
 695 #else
 696                 pAC->IoBase = (char*)pci_mem_to_phys(devno, base_address);
 697 #endif
 698
 699                 if (!pAC->IoBase){
 700                         printk(KERN_ERR "%s:  Unable to map I/O register, "
 701                                "SK 98xx No. %i will be disabled.\n",
 702                                dev->name, boards_found);
 703                         kfree(dev);
 704                         break;
 705                 }
 706
 707                 pAC->Index = boards_found;
 708                 if (SkGeBoardInit(dev, pAC)) {
 709                         FreeResources(dev);
 710                         kfree(dev);
 711                         continue;
 712                 }
 713
 714 #if 0
 715                 memcpy((caddr_t) &dev->dev_addr,
 716                         (caddr_t) &pAC->Addr.Net[0].CurrentMacAddress, 6);
 717 #else
 718                 memcpy((caddr_t) &dev->enetaddr,
 719                         (caddr_t) &pAC->Addr.Net[0].CurrentMacAddress, 6);
 720 #endif
 721
 722 #if 0
 723                 /* First adapter... Create proc and print message */
 724                 if (!DeviceFound) {
 725                         DeviceFound = SK_TRUE;
 726                         SK_MEMCPY(&SK_Root_Dir_entry, BootString,
 727                                 sizeof(SK_Root_Dir_entry) - 1);
 728
 729                         /*Create proc (directory)*/
 730                         if(!proc_root_initialized) {
 731                                 pSkRootDir = create_proc_entry(SK_Root_Dir_entry,
 732                                         S_IFDIR | S_IWUSR | S_IRUGO | S_IXUGO, proc_net);
 733                                 proc_root_initialized = 1;
 734                         }
 735
 736                         pSkRootDir->owner = THIS_MODULE;
 737                 }
 738
 739
 740                 /* Create proc file */
 741                 pProcFile = create_proc_entry(dev->name,
 742                         S_IFREG | S_IXUSR | S_IWGRP | S_IROTH,
 743                         pSkRootDir);
 744
 745
 746                 pProcFile->read_proc = proc_read;
 747                 pProcFile->write_proc = NULL;
 748                 pProcFile->nlink = 1;
 749                 pProcFile->size = sizeof(dev->name + 1);
 750                 pProcFile->data = (void *)pProcFile;
 751 #endif
 752
 753                 pNet->PortNr = 0;
 754                 pNet->NetNr = 0;
 755
 756 #ifdef SK_ZEROCOPY
 757                         if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 758                                 /* SG and ZEROCOPY - fly baby... */
 759                                 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 760                         }
 761 #endif
 762
 763                 boards_found++;
 764
 765                 /* More then one port found */
 766                 if ((pAC->GIni.GIMacsFound == 2 ) && (pAC->RlmtNets == 2)) {
 767 #if 0
 768                         if ((dev = init_etherdev(NULL, sizeof(DEV_NET))) == 0) {
 769                                 printk(KERN_ERR "Unable to allocate etherdev "
 770                                         "structure!\n");
 771                                 break;
 772                         }
 773 #else
 774                         dev = malloc (sizeof *dev);
 775                         memset(dev, 0, sizeof(*dev));
 776                         dev->priv = malloc(sizeof(DEV_NET));
 777 #endif
 778
 779                         pAC->dev[1] = dev;
 780                         pNet = dev->priv;
 781                         pNet->PortNr = 1;
 782                         pNet->NetNr = 1;
 783                         pNet->pAC = pAC;
 784                         pNet->Mtu = 1500;
 785                         pNet->Up = 0;
 786
 787 #if 0
 788                         dev->open =             &SkGeOpen;
 789                         dev->stop =             &SkGeClose;
 790                         dev->hard_start_xmit =  &SkGeXmit;
 791                         dev->get_stats =        &SkGeStats;
 792                         dev->set_multicast_list = &SkGeSetRxMode;
 793                         dev->set_mac_address =  &SkGeSetMacAddr;
 794                         dev->do_ioctl =         &SkGeIoctl;
 795                         dev->change_mtu =       &SkGeChangeMtu;
 796                         dev->flags &=           ~IFF_RUNNING;
 797 #endif
 798
 799 #ifdef SK_ZEROCOPY
 800                         if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
 801                                 /* SG and ZEROCOPY - fly baby... */
 802                                 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
 803                         }
 804 #endif
 805
 806 #if 0
 807                         pProcFile = create_proc_entry(dev->name,
 808                                 S_IFREG | S_IXUSR | S_IWGRP | S_IROTH,
 809                                 pSkRootDir);
 810
 811
 812                         pProcFile->read_proc = proc_read;
 813                         pProcFile->write_proc = NULL;
 814                         pProcFile->nlink = 1;
 815                         pProcFile->size = sizeof(dev->name + 1);
 816                         pProcFile->data = (void *)pProcFile;
 817 #endif
 818
 819 #if 0
 820                         memcpy((caddr_t) &dev->dev_addr,
 821                         (caddr_t) &pAC->Addr.Net[1].CurrentMacAddress, 6);
 822 #else
 823                         memcpy((caddr_t) &dev->enetaddr,
 824                         (caddr_t) &pAC->Addr.Net[1].CurrentMacAddress, 6);
 825 #endif
 826
 827                         printk("%s: %s\n", dev->name, pAC->DeviceStr);
 828                         printk("      PrefPort:B  RlmtMode:Dual Check Link State\n");
 829
 830                 }
 831
 832
 833                 /* Save the hardware revision */
 834                 pAC->HWRevision = (((pAC->GIni.GIPciHwRev >> 4) & 0x0F)*10) +
 835                         (pAC->GIni.GIPciHwRev & 0x0F);
 836
 837                 /*
 838                  * This is bollocks, but we need to tell the net-init
 839                  * code that it shall go for the next device.
 840                  */
 841 #if 0
 842 #ifndef MODULE
 843                 dev->base_addr = 0;
 844 #endif
 845 #endif
 846         }
 847
 848         /*
 849          * If we're at this point we're going through skge_probe() for
 850          * the first time.  Return success (0) if we've initialized 1
 851          * or more boards. Otherwise, return failure (-ENODEV).
 852          */
 853
 854         return boards_found;
 855 } /* skge_probe */
 856
 857
 858 /*****************************************************************************
 859  *
 860  *      FreeResources - release resources allocated for adapter
 861  *
 862  * Description:
 863  *      This function releases the IRQ, unmaps the IO and
 864  *      frees the desriptor ring.
 865  *
 866  * Returns: N/A
 867  *
 868  */
 869 static void FreeResources(struct SK_NET_DEVICE *dev)
 870 {
 871 SK_U32 AllocFlag;
 872 DEV_NET         *pNet;
 873 SK_AC           *pAC;
 874
 875         if (dev->priv) {
 876                 pNet = (DEV_NET*) dev->priv;
 877                 pAC = pNet->pAC;
 878                 AllocFlag = pAC->AllocFlag;
 879 #if 0
 880                 if (AllocFlag & SK_ALLOC_IRQ) {
 881                         free_irq(dev->irq, dev);
 882                 }
 883                 if (pAC->IoBase) {
 884                         iounmap(pAC->IoBase);
 885                 }
 886 #endif
 887                 if (pAC->pDescrMem) {
 888                         BoardFreeMem(pAC);
 889                 }
 890         }
 891
 892 } /* FreeResources */
 893
 894 #if 0
 895 MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>");
 896 MODULE_DESCRIPTION("SysKonnect SK-NET Gigabit Ethernet SK-98xx driver");
 897 MODULE_LICENSE("GPL");
 898 MODULE_PARM(Speed_A,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 899 MODULE_PARM(Speed_B,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 900 MODULE_PARM(AutoNeg_A,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 901 MODULE_PARM(AutoNeg_B,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 902 MODULE_PARM(DupCap_A,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 903 MODULE_PARM(DupCap_B,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 904 MODULE_PARM(FlowCtrl_A, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 905 MODULE_PARM(FlowCtrl_B, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 906 MODULE_PARM(Role_A,         "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 907 MODULE_PARM(Role_B,         "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 908 MODULE_PARM(PrefPort,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 909 MODULE_PARM(RlmtMode,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
 910 /* not used, just there because every driver should have them: */
 911 MODULE_PARM(options,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "i");
 912 MODULE_PARM(debug,      "i");
 913 #endif
 914
 915
 916 #ifdef LINK_SPEED_A
 917 static char *Speed_A[SK_MAX_CARD_PARAM] = LINK_SPEED_A;
 918 #else
 919 static char *Speed_A[SK_MAX_CARD_PARAM] = {"", };
 920 #endif
 921
 922 #ifdef LINK_SPEED_B
 923 static char *Speed_B[SK_MAX_CARD_PARAM] = LINK_SPEED_B;
 924 #else
 925 static char *Speed_B[SK_MAX_CARD_PARAM] = {"", };
 926 #endif
 927
 928 #ifdef AUTO_NEG_A
 929 static char *AutoNeg_A[SK_MAX_CARD_PARAM] = AUTO_NEG_A;
 930 #else
 931 static char *AutoNeg_A[SK_MAX_CARD_PARAM] = {"", };
 932 #endif
 933
 934 #ifdef DUP_CAP_A
 935 static char *DupCap_A[SK_MAX_CARD_PARAM] = DUP_CAP_A;
 936 #else
 937 static char *DupCap_A[SK_MAX_CARD_PARAM] = {"", };
 938 #endif
 939
 940 #ifdef FLOW_CTRL_A
 941 static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = FLOW_CTRL_A;
 942 #else
 943 static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = {"", };
 944 #endif
 945
 946 #ifdef ROLE_A
 947 static char *Role_A[SK_MAX_CARD_PARAM] = ROLE_A;
 948 #else
 949 static char *Role_A[SK_MAX_CARD_PARAM] = {"", };
 950 #endif
 951
 952 #ifdef AUTO_NEG_B
 953 static char *AutoNeg_B[SK_MAX_CARD_PARAM] = AUTO_NEG_B;
 954 #else
 955 static char *AutoNeg_B[SK_MAX_CARD_PARAM] = {"", };
 956 #endif
 957
 958 #ifdef DUP_CAP_B
 959 static char *DupCap_B[SK_MAX_CARD_PARAM] = DUP_CAP_B;
 960 #else
 961 static char *DupCap_B[SK_MAX_CARD_PARAM] = {"", };
 962 #endif
 963
 964 #ifdef FLOW_CTRL_B
 965 static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = FLOW_CTRL_B;
 966 #else
 967 static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = {"", };
 968 #endif
 969
 970 #ifdef ROLE_B
 971 static char *Role_B[SK_MAX_CARD_PARAM] = ROLE_B;
 972 #else
 973 static char *Role_B[SK_MAX_CARD_PARAM] = {"", };
 974 #endif
 975
 976 #ifdef PREF_PORT
 977 static char *PrefPort[SK_MAX_CARD_PARAM] = PREF_PORT;
 978 #else
 979 static char *PrefPort[SK_MAX_CARD_PARAM] = {"", };
 980 #endif
 981
 982 #ifdef RLMT_MODE
 983 static char *RlmtMode[SK_MAX_CARD_PARAM] = RLMT_MODE;
 984 #else
 985 static char *RlmtMode[SK_MAX_CARD_PARAM] = {"", };
 986 #endif
 987
 988 #if 0
 989 static int debug = 0; /* not used */
 990 static int options[SK_MAX_CARD_PARAM] = {0, }; /* not used */
 991
 992
 993 /*****************************************************************************
 994  *
 995  *      skge_init_module - module initialization function
 996  *
 997  * Description:
 998  *      Very simple, only call skge_probe and return approriate result.
 999  *
1000  * Returns:
1001  *      0, if everything is ok
1002  *      !=0, on error
1003  */
1004 static int __init skge_init_module(void)
1005 {
1006         int cards;
1007         SkGeRootDev = NULL;
1008
1009         /* just to avoid warnings ... */
1010         debug = 0;
1011         options[0] = 0;
1012
1013         cards = skge_probe();
1014         if (cards == 0) {
1015                 printk("sk98lin: No adapter found.\n");
1016         }
1017         return cards ? 0 : -ENODEV;
1018 } /* skge_init_module */
1019
1020
1021 /*****************************************************************************
1022  *
1023  *      skge_cleanup_module - module unload function
1024  *
1025  * Description:
1026  *      Disable adapter if it is still running, free resources,
1027  *      free device struct.
1028  *
1029  * Returns: N/A
1030  */
1031 static void __exit skge_cleanup_module(void)
1032 {
1033 DEV_NET         *pNet;
1034 SK_AC           *pAC;
1035 struct SK_NET_DEVICE *next;
1036 unsigned long Flags;
1037 SK_EVPARA EvPara;
1038
1039         while (SkGeRootDev) {
1040                 pNet = (DEV_NET*) SkGeRootDev->priv;
1041                 pAC = pNet->pAC;
1042                 next = pAC->Next;
1043
1044                 netif_stop_queue(SkGeRootDev);
1045                 SkGeYellowLED(pAC, pAC->IoBase, 0);
1046
1047                 if(pAC->BoardLevel == 2) {
1048                         /* board is still alive */
1049                         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1050                         EvPara.Para32[0] = 0;
1051                         EvPara.Para32[1] = -1;
1052                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1053                         EvPara.Para32[0] = 1;
1054                         EvPara.Para32[1] = -1;
1055                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1056                         SkEventDispatcher(pAC, pAC->IoBase);
1057                         /* disable interrupts */
1058                         SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1059                         SkGeDeInit(pAC, pAC->IoBase);
1060                         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1061                         pAC->BoardLevel = 0;
1062                         /* We do NOT check here, if IRQ was pending, of course*/
1063                 }
1064
1065                 if(pAC->BoardLevel == 1) {
1066                         /* board is still alive */
1067                         SkGeDeInit(pAC, pAC->IoBase);
1068                         pAC->BoardLevel = 0;
1069                 }
1070
1071                 if ((pAC->GIni.GIMacsFound == 2) && pAC->RlmtNets == 2){
1072                         unregister_netdev(pAC->dev[1]);
1073                         kfree(pAC->dev[1]);
1074                 }
1075
1076                 FreeResources(SkGeRootDev);
1077
1078                 SkGeRootDev->get_stats = NULL;
1079                 /*
1080                  * otherwise unregister_netdev calls get_stats with
1081                  * invalid IO ...  :-(
1082                  */
1083                 unregister_netdev(SkGeRootDev);
1084                 kfree(SkGeRootDev);
1085                 kfree(pAC);
1086                 SkGeRootDev = next;
1087         }
1088
1089         /* clear proc-dir */
1090         remove_proc_entry(pSkRootDir->name, proc_net);
1091
1092 } /* skge_cleanup_module */
1093
1094 module_init(skge_init_module);
1095 module_exit(skge_cleanup_module);
1096 #endif
1097
1098
1099 /*****************************************************************************
1100  *
1101  *      SkGeBoardInit - do level 0 and 1 initialization
1102  *
1103  * Description:
1104  *      This function prepares the board hardware for running. The desriptor
1105  *      ring is set up, the IRQ is allocated and the configuration settings
1106  *      are examined.
1107  *
1108  * Returns:
1109  *      0, if everything is ok
1110  *      !=0, on error
1111  */
1112 static int __init SkGeBoardInit(struct SK_NET_DEVICE *dev, SK_AC *pAC)
1113 {
1114 short   i;
1115 unsigned long Flags;
1116 char    *DescrString = "sk98lin: Driver for Linux"; /* this is given to PNMI */
1117 char    *VerStr = VER_STRING;
1118 #if 0
1119 int     Ret;                    /* return code of request_irq */
1120 #endif
1121 SK_BOOL DualNet;
1122
1123         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1124                 ("IoBase: %08lX\n", (unsigned long)pAC->IoBase));
1125         for (i=0; i<SK_MAX_MACS; i++) {
1126                 pAC->TxPort[i][0].HwAddr = pAC->IoBase + TxQueueAddr[i][0];
1127                 pAC->TxPort[i][0].PortIndex = i;
1128                 pAC->RxPort[i].HwAddr = pAC->IoBase + RxQueueAddr[i];
1129                 pAC->RxPort[i].PortIndex = i;
1130         }
1131
1132         /* Initialize the mutexes */
1133         for (i=0; i<SK_MAX_MACS; i++) {
1134                 spin_lock_init(&pAC->TxPort[i][0].TxDesRingLock);
1135                 spin_lock_init(&pAC->RxPort[i].RxDesRingLock);
1136         }
1137         spin_lock_init(&pAC->SlowPathLock);
1138
1139         /* level 0 init common modules here */
1140
1141         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1142         /* Does a RESET on board ...*/
1143         if (SkGeInit(pAC, pAC->IoBase, 0) != 0) {
1144                 printk("HWInit (0) failed.\n");
1145                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1146                 return(-EAGAIN);
1147         }
1148         SkI2cInit(  pAC, pAC->IoBase, 0);
1149         SkEventInit(pAC, pAC->IoBase, 0);
1150         SkPnmiInit( pAC, pAC->IoBase, 0);
1151         SkAddrInit( pAC, pAC->IoBase, 0);
1152         SkRlmtInit( pAC, pAC->IoBase, 0);
1153         SkTimerInit(pAC, pAC->IoBase, 0);
1154
1155         pAC->BoardLevel = 0;
1156         pAC->RxBufSize = ETH_BUF_SIZE;
1157
1158         SK_PNMI_SET_DRIVER_DESCR(pAC, DescrString);
1159         SK_PNMI_SET_DRIVER_VER(pAC, VerStr);
1160
1161         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1162
1163         /* level 1 init common modules here (HW init) */
1164         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1165         if (SkGeInit(pAC, pAC->IoBase, 1) != 0) {
1166                 printk("HWInit (1) failed.\n");
1167                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1168                 return(-EAGAIN);
1169         }
1170         SkI2cInit(  pAC, pAC->IoBase, 1);
1171         SkEventInit(pAC, pAC->IoBase, 1);
1172         SkPnmiInit( pAC, pAC->IoBase, 1);
1173         SkAddrInit( pAC, pAC->IoBase, 1);
1174         SkRlmtInit( pAC, pAC->IoBase, 1);
1175         SkTimerInit(pAC, pAC->IoBase, 1);
1176
1177         GetConfiguration(pAC);
1178         if (pAC->RlmtNets == 2) {
1179                 pAC->GIni.GIPortUsage = SK_MUL_LINK;
1180         }
1181
1182         pAC->BoardLevel = 1;
1183         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1184
1185 #if 0
1186         if (pAC->GIni.GIMacsFound == 2) {
1187                  Ret = request_irq(dev->irq, SkGeIsr, SA_SHIRQ, pAC->Name, dev);
1188         } else if (pAC->GIni.GIMacsFound == 1) {
1189                 Ret = request_irq(dev->irq, SkGeIsrOnePort, SA_SHIRQ,
1190                         pAC->Name, dev);
1191         } else {
1192                 printk(KERN_WARNING "%s: Illegal number of ports: %d\n",
1193                        dev->name, pAC->GIni.GIMacsFound);
1194                 return -EAGAIN;
1195         }
1196
1197         if (Ret) {
1198                 printk(KERN_WARNING "%s: Requested IRQ %d is busy.\n",
1199                        dev->name, dev->irq);
1200                 return -EAGAIN;
1201         }
1202 #endif
1203         pAC->AllocFlag |= SK_ALLOC_IRQ;
1204
1205         /* Alloc memory for this board (Mem for RxD/TxD) : */
1206         if(!BoardAllocMem(pAC)) {
1207                 printk("No memory for descriptor rings.\n");
1208                 return(-EAGAIN);
1209         }
1210
1211         SkCsSetReceiveFlags(pAC,
1212                 SKCS_PROTO_IP | SKCS_PROTO_TCP | SKCS_PROTO_UDP,
1213                 &pAC->CsOfs1, &pAC->CsOfs2, 0);
1214         pAC->CsOfs = (pAC->CsOfs2 << 16) | pAC->CsOfs1;
1215
1216         BoardInitMem(pAC);
1217 #if 0
1218         SetQueueSizes(pAC);
1219 #else
1220         /* tschilling: New common function with minimum size check. */
1221         DualNet = SK_FALSE;
1222         if (pAC->RlmtNets == 2) {
1223                 DualNet = SK_TRUE;
1224         }
1225
1226         if (SkGeInitAssignRamToQueues(
1227                 pAC,
1228                 pAC->ActivePort,
1229                 DualNet)) {
1230                 BoardFreeMem(pAC);
1231                 printk("SkGeInitAssignRamToQueues failed.\n");
1232                 return(-EAGAIN);
1233         }
1234 #endif
1235
1236         /* Print adapter specific string from vpd */
1237         ProductStr(pAC);
1238 #ifdef SK98_INFO
1239         printk("%s: %s\n", dev->name, pAC->DeviceStr);
1240
1241         /* Print configuration settings */
1242         printk("      PrefPort:%c  RlmtMode:%s\n",
1243                 'A' + pAC->Rlmt.Net[0].Port[pAC->Rlmt.Net[0].PrefPort]->PortNumber,
1244                 (pAC->RlmtMode==0)  ? "Check Link State" :
1245                 ((pAC->RlmtMode==1) ? "Check Link State" :
1246                 ((pAC->RlmtMode==3) ? "Check Local Port" :
1247                 ((pAC->RlmtMode==7) ? "Check Segmentation" :
1248                 ((pAC->RlmtMode==17) ? "Dual Check Link State" :"Error")))));
1249 #endif
1250
1251         SkGeYellowLED(pAC, pAC->IoBase, 1);
1252
1253         /*
1254          * Register the device here
1255          */
1256         pAC->Next = SkGeRootDev;
1257         SkGeRootDev = dev;
1258
1259         return (0);
1260 } /* SkGeBoardInit */
1261
1262
1263 /*****************************************************************************
1264  *
1265  *      BoardAllocMem - allocate the memory for the descriptor rings
1266  *
1267  * Description:
1268  *      This function allocates the memory for all descriptor rings.
1269  *      Each ring is aligned for the desriptor alignment and no ring
1270  *      has a 4 GByte boundary in it (because the upper 32 bit must
1271  *      be constant for all descriptiors in one rings).
1272  *
1273  * Returns:
1274  *      SK_TRUE, if all memory could be allocated
1275  *      SK_FALSE, if not
1276  */
1277 static SK_BOOL BoardAllocMem(
1278 SK_AC   *pAC)
1279 {
1280 caddr_t         pDescrMem;      /* pointer to descriptor memory area */
1281 size_t          AllocLength;    /* length of complete descriptor area */
1282 int             i;              /* loop counter */
1283 unsigned long   BusAddr;
1284
1285
1286         /* rings plus one for alignment (do not cross 4 GB boundary) */
1287         /* RX_RING_SIZE is assumed bigger than TX_RING_SIZE */
1288 #if (BITS_PER_LONG == 32)
1289         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound + 8;
1290 #else
1291         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound
1292                 + RX_RING_SIZE + 8;
1293 #endif
1294
1295         pDescrMem = pci_alloc_consistent(pAC->PciDev, AllocLength,
1296                                          &pAC->pDescrMemDMA);
1297
1298         if (pDescrMem == NULL) {
1299                 return (SK_FALSE);
1300         }
1301         pAC->pDescrMem = pDescrMem;
1302         BusAddr = (unsigned long) pAC->pDescrMemDMA;
1303
1304         /* Descriptors need 8 byte alignment, and this is ensured
1305          * by pci_alloc_consistent.
1306          */
1307         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1308                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1309                         ("TX%d/A: pDescrMem: %lX,   PhysDescrMem: %lX\n",
1310                         i, (unsigned long) pDescrMem,
1311                         BusAddr));
1312                 pAC->TxPort[i][0].pTxDescrRing = pDescrMem;
1313                 pAC->TxPort[i][0].VTxDescrRing = BusAddr;
1314                 pDescrMem += TX_RING_SIZE;
1315                 BusAddr += TX_RING_SIZE;
1316
1317                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1318                         ("RX%d: pDescrMem: %lX,   PhysDescrMem: %lX\n",
1319                         i, (unsigned long) pDescrMem,
1320                         (unsigned long)BusAddr));
1321                 pAC->RxPort[i].pRxDescrRing = pDescrMem;
1322                 pAC->RxPort[i].VRxDescrRing = BusAddr;
1323                 pDescrMem += RX_RING_SIZE;
1324                 BusAddr += RX_RING_SIZE;
1325         } /* for */
1326
1327         return (SK_TRUE);
1328 } /* BoardAllocMem */
1329
1330
1331 /****************************************************************************
1332  *
1333  *      BoardFreeMem - reverse of BoardAllocMem
1334  *
1335  * Description:
1336  *      Free all memory allocated in BoardAllocMem: adapter context,
1337  *      descriptor rings, locks.
1338  *
1339  * Returns:     N/A
1340  */
1341 static void BoardFreeMem(
1342 SK_AC           *pAC)
1343 {
1344 size_t          AllocLength;    /* length of complete descriptor area */
1345
1346         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1347                 ("BoardFreeMem\n"));
1348 #if (BITS_PER_LONG == 32)
1349         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound + 8;
1350 #else
1351         AllocLength = (RX_RING_SIZE + TX_RING_SIZE) * pAC->GIni.GIMacsFound
1352                 + RX_RING_SIZE + 8;
1353 #endif
1354
1355         pci_free_consistent(pAC->PciDev, AllocLength,
1356                             pAC->pDescrMem, pAC->pDescrMemDMA);
1357         pAC->pDescrMem = NULL;
1358 } /* BoardFreeMem */
1359
1360
1361 /*****************************************************************************
1362  *
1363  *      BoardInitMem - initiate the descriptor rings
1364  *
1365  * Description:
1366  *      This function sets the descriptor rings up in memory.
1367  *      The adapter is initialized with the descriptor start addresses.
1368  *
1369  * Returns:     N/A
1370  */
1371 static void BoardInitMem(
1372 SK_AC   *pAC)   /* pointer to adapter context */
1373 {
1374 int     i;              /* loop counter */
1375 int     RxDescrSize;    /* the size of a rx descriptor rounded up to alignment*/
1376 int     TxDescrSize;    /* the size of a tx descriptor rounded up to alignment*/
1377
1378         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1379                 ("BoardInitMem\n"));
1380
1381         RxDescrSize = (((sizeof(RXD) - 1) / DESCR_ALIGN) + 1) * DESCR_ALIGN;
1382         pAC->RxDescrPerRing = RX_RING_SIZE / RxDescrSize;
1383         TxDescrSize = (((sizeof(TXD) - 1) / DESCR_ALIGN) + 1) * DESCR_ALIGN;
1384         pAC->TxDescrPerRing = TX_RING_SIZE / RxDescrSize;
1385
1386         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1387                 SetupRing(
1388                         pAC,
1389                         pAC->TxPort[i][0].pTxDescrRing,
1390                         pAC->TxPort[i][0].VTxDescrRing,
1391                         (RXD**)&pAC->TxPort[i][0].pTxdRingHead,
1392                         (RXD**)&pAC->TxPort[i][0].pTxdRingTail,
1393                         (RXD**)&pAC->TxPort[i][0].pTxdRingPrev,
1394                         &pAC->TxPort[i][0].TxdRingFree,
1395                         SK_TRUE);
1396                 SetupRing(
1397                         pAC,
1398                         pAC->RxPort[i].pRxDescrRing,
1399                         pAC->RxPort[i].VRxDescrRing,
1400                         &pAC->RxPort[i].pRxdRingHead,
1401                         &pAC->RxPort[i].pRxdRingTail,
1402                         &pAC->RxPort[i].pRxdRingPrev,
1403                         &pAC->RxPort[i].RxdRingFree,
1404                         SK_FALSE);
1405         }
1406 } /* BoardInitMem */
1407
1408
1409 /*****************************************************************************
1410  *
1411  *      SetupRing - create one descriptor ring
1412  *
1413  * Description:
1414  *      This function creates one descriptor ring in the given memory area.
1415  *      The head, tail and number of free descriptors in the ring are set.
1416  *
1417  * Returns:
1418  *      none
1419  */
1420 static void SetupRing(
1421 SK_AC           *pAC,
1422 void            *pMemArea,      /* a pointer to the memory area for the ring */
1423 uintptr_t       VMemArea,       /* the virtual bus address of the memory area */
1424 RXD             **ppRingHead,   /* address where the head should be written */
1425 RXD             **ppRingTail,   /* address where the tail should be written */
1426 RXD             **ppRingPrev,   /* address where the tail should be written */
1427 int             *pRingFree,     /* address where the # of free descr. goes */
1428 SK_BOOL         IsTx)           /* flag: is this a tx ring */
1429 {
1430 int     i;              /* loop counter */
1431 int     DescrSize;      /* the size of a descriptor rounded up to alignment*/
1432 int     DescrNum;       /* number of descriptors per ring */
1433 RXD     *pDescr;        /* pointer to a descriptor (receive or transmit) */
1434 RXD     *pNextDescr;    /* pointer to the next descriptor */
1435 RXD     *pPrevDescr;    /* pointer to the previous descriptor */
1436 uintptr_t VNextDescr;   /* the virtual bus address of the next descriptor */
1437
1438         if (IsTx == SK_TRUE) {
1439                 DescrSize = (((sizeof(TXD) - 1) / DESCR_ALIGN) + 1) *
1440                         DESCR_ALIGN;
1441                 DescrNum = TX_RING_SIZE / DescrSize;
1442         } else {
1443                 DescrSize = (((sizeof(RXD) - 1) / DESCR_ALIGN) + 1) *
1444                         DESCR_ALIGN;
1445                 DescrNum = RX_RING_SIZE / DescrSize;
1446         }
1447
1448         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
1449                 ("Descriptor size: %d   Descriptor Number: %d\n",
1450                 DescrSize,DescrNum));
1451
1452         pDescr = (RXD*) pMemArea;
1453         pPrevDescr = NULL;
1454         pNextDescr = (RXD*) (((char*)pDescr) + DescrSize);
1455         VNextDescr = VMemArea + DescrSize;
1456         for(i=0; i<DescrNum; i++) {
1457                 /* set the pointers right */
1458                 pDescr->VNextRxd = VNextDescr & 0xffffffffULL;
1459                 pDescr->pNextRxd = pNextDescr;
1460                 pDescr->TcpSumStarts = pAC->CsOfs;
1461
1462                 /* advance one step */
1463                 pPrevDescr = pDescr;
1464                 pDescr = pNextDescr;
1465                 pNextDescr = (RXD*) (((char*)pDescr) + DescrSize);
1466                 VNextDescr += DescrSize;
1467         }
1468         pPrevDescr->pNextRxd = (RXD*) pMemArea;
1469         pPrevDescr->VNextRxd = VMemArea;
1470         pDescr = (RXD*) pMemArea;
1471         *ppRingHead = (RXD*) pMemArea;
1472         *ppRingTail = *ppRingHead;
1473         *ppRingPrev = pPrevDescr;
1474         *pRingFree = DescrNum;
1475 } /* SetupRing */
1476
1477
1478 /*****************************************************************************
1479  *
1480  *      PortReInitBmu - re-initiate the descriptor rings for one port
1481  *
1482  * Description:
1483  *      This function reinitializes the descriptor rings of one port
1484  *      in memory. The port must be stopped before.
1485  *      The HW is initialized with the descriptor start addresses.
1486  *
1487  * Returns:
1488  *      none
1489  */
1490 static void PortReInitBmu(
1491 SK_AC   *pAC,           /* pointer to adapter context */
1492 int     PortIndex)      /* index of the port for which to re-init */
1493 {
1494         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1495                 ("PortReInitBmu "));
1496
1497         /* set address of first descriptor of ring in BMU */
1498         SK_OUT32(pAC->IoBase, TxQueueAddr[PortIndex][TX_PRIO_LOW]+
1499                 TX_Q_CUR_DESCR_LOW,
1500                 (uint32_t)(((caddr_t)
1501                 (pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxdRingHead) -
1502                 pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxDescrRing +
1503                 pAC->TxPort[PortIndex][TX_PRIO_LOW].VTxDescrRing) &
1504                 0xFFFFFFFF));
1505         SK_OUT32(pAC->IoBase, TxQueueAddr[PortIndex][TX_PRIO_LOW]+
1506                 TX_Q_DESCR_HIGH,
1507                 (uint32_t)(((caddr_t)
1508                 (pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxdRingHead) -
1509                 pAC->TxPort[PortIndex][TX_PRIO_LOW].pTxDescrRing +
1510                 pAC->TxPort[PortIndex][TX_PRIO_LOW].VTxDescrRing) >> 32));
1511         SK_OUT32(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_CUR_DESCR_LOW,
1512                 (uint32_t)(((caddr_t)(pAC->RxPort[PortIndex].pRxdRingHead) -
1513                 pAC->RxPort[PortIndex].pRxDescrRing +
1514                 pAC->RxPort[PortIndex].VRxDescrRing) & 0xFFFFFFFF));
1515         SK_OUT32(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_DESCR_HIGH,
1516                 (uint32_t)(((caddr_t)(pAC->RxPort[PortIndex].pRxdRingHead) -
1517                 pAC->RxPort[PortIndex].pRxDescrRing +
1518                 pAC->RxPort[PortIndex].VRxDescrRing) >> 32));
1519 } /* PortReInitBmu */
1520
1521
1522 /****************************************************************************
1523  *
1524  *      SkGeIsr - handle adapter interrupts
1525  *
1526  * Description:
1527  *      The interrupt routine is called when the network adapter
1528  *      generates an interrupt. It may also be called if another device
1529  *      shares this interrupt vector with the driver.
1530  *
1531  * Returns: N/A
1532  *
1533  */
1534 #if 0
1535 static void SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs)
1536 #else
1537 void SkGeIsr(int irq, void *dev_id, struct pt_regs *ptregs)
1538 #endif
1539 {
1540 struct SK_NET_DEVICE *dev = (struct SK_NET_DEVICE *)dev_id;
1541 DEV_NET         *pNet;
1542 SK_AC           *pAC;
1543 SK_U32          IntSrc;         /* interrupts source register contents */
1544
1545         pNet = (DEV_NET*) dev->priv;
1546         pAC = pNet->pAC;
1547
1548         /*
1549          * Check and process if its our interrupt
1550          */
1551         SK_IN32(pAC->IoBase, B0_SP_ISRC, &IntSrc);
1552         if (IntSrc == 0) {
1553                 return;
1554         }
1555
1556         while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
1557 #if 0 /* software irq currently not used */
1558                 if (IntSrc & IRQ_SW) {
1559                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1560                                 SK_DBGCAT_DRV_INT_SRC,
1561                                 ("Software IRQ\n"));
1562                 }
1563 #endif
1564                 if (IntSrc & IRQ_EOF_RX1) {
1565                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1566                                 SK_DBGCAT_DRV_INT_SRC,
1567                                 ("EOF RX1 IRQ\n"));
1568                         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1569                         SK_PNMI_CNT_RX_INTR(pAC, 0);
1570                 }
1571                 if (IntSrc & IRQ_EOF_RX2) {
1572                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1573                                 SK_DBGCAT_DRV_INT_SRC,
1574                                 ("EOF RX2 IRQ\n"));
1575                         ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
1576                         SK_PNMI_CNT_RX_INTR(pAC, 1);
1577                 }
1578 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1579                 if (IntSrc & IRQ_EOF_AS_TX1) {
1580                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1581                                 SK_DBGCAT_DRV_INT_SRC,
1582                                 ("EOF AS TX1 IRQ\n"));
1583                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1584                         spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1585                         FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
1586                         spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1587                 }
1588                 if (IntSrc & IRQ_EOF_AS_TX2) {
1589                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1590                                 SK_DBGCAT_DRV_INT_SRC,
1591                                 ("EOF AS TX2 IRQ\n"));
1592                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1593                         spin_lock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
1594                         FreeTxDescriptors(pAC, &pAC->TxPort[1][TX_PRIO_LOW]);
1595                         spin_unlock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
1596                 }
1597 #if 0 /* only if sync. queues used */
1598                 if (IntSrc & IRQ_EOF_SY_TX1) {
1599                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1600                                 SK_DBGCAT_DRV_INT_SRC,
1601                                 ("EOF SY TX1 IRQ\n"));
1602                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1603                         spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1604                         FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
1605                         spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1606                         ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
1607                 }
1608                 if (IntSrc & IRQ_EOF_SY_TX2) {
1609                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1610                                 SK_DBGCAT_DRV_INT_SRC,
1611                                 ("EOF SY TX2 IRQ\n"));
1612                         SK_PNMI_CNT_TX_INTR(pAC, 1);
1613                         spin_lock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
1614                         FreeTxDescriptors(pAC, 1, TX_PRIO_HIGH);
1615                         spin_unlock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
1616                         ClearTxIrq(pAC, 1, TX_PRIO_HIGH);
1617                 }
1618 #endif
1619 #endif
1620
1621                 /* do all IO at once */
1622                 if (IntSrc & IRQ_EOF_RX1)
1623                         ClearAndStartRx(pAC, 0);
1624                 if (IntSrc & IRQ_EOF_RX2)
1625                         ClearAndStartRx(pAC, 1);
1626 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1627                 if (IntSrc & IRQ_EOF_AS_TX1)
1628                         ClearTxIrq(pAC, 0, TX_PRIO_LOW);
1629                 if (IntSrc & IRQ_EOF_AS_TX2)
1630                         ClearTxIrq(pAC, 1, TX_PRIO_LOW);
1631 #endif
1632                 SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
1633         } /* while (IntSrc & IRQ_MASK != 0) */
1634
1635         if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
1636                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
1637                         ("SPECIAL IRQ DP-Cards => %x\n", IntSrc));
1638                 pAC->CheckQueue = SK_FALSE;
1639                 spin_lock(&pAC->SlowPathLock);
1640                 if (IntSrc & SPECIAL_IRQS)
1641                         SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);
1642
1643                 SkEventDispatcher(pAC, pAC->IoBase);
1644                 spin_unlock(&pAC->SlowPathLock);
1645         }
1646         /*
1647          * do it all again is case we cleared an interrupt that
1648          * came in after handling the ring (OUTs may be delayed
1649          * in hardware buffers, but are through after IN)
1650          */
1651
1652         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1653         ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
1654
1655         if (pAC->CheckQueue) {
1656                 pAC->CheckQueue = SK_FALSE;
1657                 spin_lock(&pAC->SlowPathLock);
1658                 SkEventDispatcher(pAC, pAC->IoBase);
1659                 spin_unlock(&pAC->SlowPathLock);
1660         }
1661
1662
1663         /* IRQ is processed - Enable IRQs again*/
1664         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1665
1666         return;
1667 } /* SkGeIsr */
1668
1669
1670 /****************************************************************************
1671  *
1672  *      SkGeIsrOnePort - handle adapter interrupts for single port adapter
1673  *
1674  * Description:
1675  *      The interrupt routine is called when the network adapter
1676  *      generates an interrupt. It may also be called if another device
1677  *      shares this interrupt vector with the driver.
1678  *      This is the same as above, but handles only one port.
1679  *
1680  * Returns: N/A
1681  *
1682  */
1683 #if 0
1684 static void SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs)
1685 #else
1686 void SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs)
1687 #endif
1688 {
1689 struct SK_NET_DEVICE *dev = (struct SK_NET_DEVICE *)dev_id;
1690 DEV_NET         *pNet;
1691 SK_AC           *pAC;
1692 SK_U32          IntSrc;         /* interrupts source register contents */
1693
1694         pNet = (DEV_NET*) dev->priv;
1695         pAC = pNet->pAC;
1696
1697         /*
1698          * Check and process if its our interrupt
1699          */
1700         SK_IN32(pAC->IoBase, B0_SP_ISRC, &IntSrc);
1701         if (IntSrc == 0) {
1702                 return;
1703         }
1704
1705         while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
1706 #if 0 /* software irq currently not used */
1707                 if (IntSrc & IRQ_SW) {
1708                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1709                                 SK_DBGCAT_DRV_INT_SRC,
1710                                 ("Software IRQ\n"));
1711                 }
1712 #endif
1713                 if (IntSrc & IRQ_EOF_RX1) {
1714                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1715                                 SK_DBGCAT_DRV_INT_SRC,
1716                                 ("EOF RX1 IRQ\n"));
1717                         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1718                         SK_PNMI_CNT_RX_INTR(pAC, 0);
1719                 }
1720 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1721                 if (IntSrc & IRQ_EOF_AS_TX1) {
1722                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1723                                 SK_DBGCAT_DRV_INT_SRC,
1724                                 ("EOF AS TX1 IRQ\n"));
1725                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1726                         spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1727                         FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
1728                         spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
1729                 }
1730 #if 0 /* only if sync. queues used */
1731                 if (IntSrc & IRQ_EOF_SY_TX1) {
1732                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
1733                                 SK_DBGCAT_DRV_INT_SRC,
1734                                 ("EOF SY TX1 IRQ\n"));
1735                         SK_PNMI_CNT_TX_INTR(pAC, 0);
1736                         spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1737                         FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
1738                         spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
1739                         ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
1740                 }
1741 #endif
1742 #endif
1743
1744                 /* do all IO at once */
1745                 if (IntSrc & IRQ_EOF_RX1)
1746                         ClearAndStartRx(pAC, 0);
1747 #ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
1748                 if (IntSrc & IRQ_EOF_AS_TX1)
1749                         ClearTxIrq(pAC, 0, TX_PRIO_LOW);
1750 #endif
1751                 SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
1752         } /* while (IntSrc & IRQ_MASK != 0) */
1753
1754         if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
1755                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
1756                         ("SPECIAL IRQ SP-Cards => %x\n", IntSrc));
1757                 pAC->CheckQueue = SK_FALSE;
1758                 spin_lock(&pAC->SlowPathLock);
1759                 if (IntSrc & SPECIAL_IRQS)
1760                         SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);
1761
1762                 SkEventDispatcher(pAC, pAC->IoBase);
1763                 spin_unlock(&pAC->SlowPathLock);
1764         }
1765         /*
1766          * do it all again is case we cleared an interrupt that
1767          * came in after handling the ring (OUTs may be delayed
1768          * in hardware buffers, but are through after IN)
1769          */
1770         ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
1771
1772         /* IRQ is processed - Enable IRQs again*/
1773         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1774
1775         return;
1776 } /* SkGeIsrOnePort */
1777
1778
1779 /****************************************************************************
1780  *
1781  *      SkGeOpen - handle start of initialized adapter
1782  *
1783  * Description:
1784  *      This function starts the initialized adapter.
1785  *      The board level variable is set and the adapter is
1786  *      brought to full functionality.
1787  *      The device flags are set for operation.
1788  *      Do all necessary level 2 initialization, enable interrupts and
1789  *      give start command to RLMT.
1790  *
1791  * Returns:
1792  *      0 on success
1793  *      != 0 on error
1794  */
1795 #if 0
1796 static int SkGeOpen(
1797 #else
1798 int SkGeOpen(
1799 #endif
1800 struct SK_NET_DEVICE    *dev)
1801 {
1802         DEV_NET                 *pNet;
1803         SK_AC                   *pAC;
1804         unsigned long   Flags;          /* for spin lock */
1805         int                             i;
1806         SK_EVPARA               EvPara;         /* an event parameter union */
1807
1808         pNet = (DEV_NET*) dev->priv;
1809         pAC = pNet->pAC;
1810
1811         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1812                 ("SkGeOpen: pAC=0x%lX:\n", (unsigned long)pAC));
1813
1814         if (pAC->BoardLevel == 0) {
1815                 /* level 1 init common modules here */
1816                 if (SkGeInit(pAC, pAC->IoBase, 1) != 0) {
1817                         printk("%s: HWInit (1) failed.\n", pAC->dev[pNet->PortNr]->name);
1818                         return (-1);
1819                 }
1820                 SkI2cInit       (pAC, pAC->IoBase, 1);
1821                 SkEventInit     (pAC, pAC->IoBase, 1);
1822                 SkPnmiInit      (pAC, pAC->IoBase, 1);
1823                 SkAddrInit      (pAC, pAC->IoBase, 1);
1824                 SkRlmtInit      (pAC, pAC->IoBase, 1);
1825                 SkTimerInit     (pAC, pAC->IoBase, 1);
1826                 pAC->BoardLevel = 1;
1827         }
1828
1829         if (pAC->BoardLevel != 2) {
1830                 /* tschilling: Level 2 init modules here, check return value. */
1831                 if (SkGeInit(pAC, pAC->IoBase, 2) != 0) {
1832                         printk("%s: HWInit (2) failed.\n", pAC->dev[pNet->PortNr]->name);
1833                         return (-1);
1834                 }
1835                 SkI2cInit       (pAC, pAC->IoBase, 2);
1836                 SkEventInit     (pAC, pAC->IoBase, 2);
1837                 SkPnmiInit      (pAC, pAC->IoBase, 2);
1838                 SkAddrInit      (pAC, pAC->IoBase, 2);
1839                 SkRlmtInit      (pAC, pAC->IoBase, 2);
1840                 SkTimerInit     (pAC, pAC->IoBase, 2);
1841                 pAC->BoardLevel = 2;
1842         }
1843
1844         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1845                 /* Enable transmit descriptor polling. */
1846                 SkGePollTxD(pAC, pAC->IoBase, i, SK_TRUE);
1847                 FillRxRing(pAC, &pAC->RxPort[i]);
1848         }
1849         SkGeYellowLED(pAC, pAC->IoBase, 1);
1850
1851 #ifdef USE_INT_MOD
1852 /* moderate only TX complete interrupts (these are not time critical) */
1853 #define IRQ_MOD_MASK (IRQ_EOF_AS_TX1 | IRQ_EOF_AS_TX2)
1854         {
1855                 unsigned long ModBase;
1856                 ModBase = 53125000 / INTS_PER_SEC;
1857                 SK_OUT32(pAC->IoBase, B2_IRQM_INI, ModBase);
1858                 SK_OUT32(pAC->IoBase, B2_IRQM_MSK, IRQ_MOD_MASK);
1859                 SK_OUT32(pAC->IoBase, B2_IRQM_CTRL, TIM_START);
1860         }
1861 #endif
1862
1863         /* enable Interrupts */
1864         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
1865         SK_OUT32(pAC->IoBase, B0_HWE_IMSK, IRQ_HWE_MASK);
1866
1867         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1868
1869         if ((pAC->RlmtMode != 0) && (pAC->MaxPorts == 0)) {
1870                 EvPara.Para32[0] = pAC->RlmtNets;
1871                 EvPara.Para32[1] = -1;
1872                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_SET_NETS,
1873                         EvPara);
1874                 EvPara.Para32[0] = pAC->RlmtMode;
1875                 EvPara.Para32[1] = 0;
1876                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_MODE_CHANGE,
1877                         EvPara);
1878         }
1879
1880         EvPara.Para32[0] = pNet->NetNr;
1881         EvPara.Para32[1] = -1;
1882         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
1883         SkEventDispatcher(pAC, pAC->IoBase);
1884         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1885
1886         pAC->MaxPorts++;
1887         pNet->Up = 1;
1888
1889         MOD_INC_USE_COUNT;
1890
1891         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1892                 ("SkGeOpen suceeded\n"));
1893
1894         return (0);
1895 } /* SkGeOpen */
1896
1897
1898 /****************************************************************************
1899  *
1900  *      SkGeClose - Stop initialized adapter
1901  *
1902  * Description:
1903  *      Close initialized adapter.
1904  *
1905  * Returns:
1906  *      0 - on success
1907  *      error code - on error
1908  */
1909 #if 0
1910 static int SkGeClose(
1911 #else
1912 int SkGeClose(
1913 #endif
1914 struct SK_NET_DEVICE    *dev)
1915 {
1916         DEV_NET                 *pNet;
1917         SK_AC                   *pAC;
1918
1919         unsigned long   Flags;          /* for spin lock */
1920         int                             i;
1921         int                             PortIdx;
1922         SK_EVPARA               EvPara;
1923
1924         netif_stop_queue(dev);
1925         pNet = (DEV_NET*) dev->priv;
1926         pAC = pNet->pAC;
1927
1928         if (pAC->RlmtNets == 1)
1929                 PortIdx = pAC->ActivePort;
1930         else
1931                 PortIdx = pNet->NetNr;
1932
1933         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1934                 ("SkGeClose: pAC=0x%lX ", (unsigned long)pAC));
1935
1936         /*
1937          * Clear multicast table, promiscuous mode ....
1938          */
1939         SkAddrMcClear(pAC, pAC->IoBase, PortIdx, 0);
1940         SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
1941                 SK_PROM_MODE_NONE);
1942
1943         if (pAC->MaxPorts == 1) {
1944                 spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1945                 /* disable interrupts */
1946                 SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1947                 EvPara.Para32[0] = pNet->NetNr;
1948                 EvPara.Para32[1] = -1;
1949                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1950                 SkEventDispatcher(pAC, pAC->IoBase);
1951                 SK_OUT32(pAC->IoBase, B0_IMSK, 0);
1952                 /* stop the hardware */
1953                 SkGeDeInit(pAC, pAC->IoBase);
1954                 pAC->BoardLevel = 0;
1955                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1956         } else {
1957
1958                 spin_lock_irqsave(&pAC->SlowPathLock, Flags);
1959                 EvPara.Para32[0] = pNet->NetNr;
1960                 EvPara.Para32[1] = -1;
1961                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
1962                 SkEventDispatcher(pAC, pAC->IoBase);
1963                 spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
1964
1965                 /* Stop port */
1966                 spin_lock_irqsave(&pAC->TxPort[pNet->PortNr]
1967                         [TX_PRIO_LOW].TxDesRingLock, Flags);
1968                 SkGeStopPort(pAC, pAC->IoBase, pNet->PortNr,
1969                         SK_STOP_ALL, SK_HARD_RST);
1970                 spin_unlock_irqrestore(&pAC->TxPort[pNet->PortNr]
1971                         [TX_PRIO_LOW].TxDesRingLock, Flags);
1972         }
1973
1974         if (pAC->RlmtNets == 1) {
1975                 /* clear all descriptor rings */
1976                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
1977                         ReceiveIrq(pAC, &pAC->RxPort[i], SK_TRUE);
1978                         ClearRxRing(pAC, &pAC->RxPort[i]);
1979                         ClearTxRing(pAC, &pAC->TxPort[i][TX_PRIO_LOW]);
1980                 }
1981         } else {
1982                 /* clear port descriptor rings */
1983                 ReceiveIrq(pAC, &pAC->RxPort[pNet->PortNr], SK_TRUE);
1984                 ClearRxRing(pAC, &pAC->RxPort[pNet->PortNr]);
1985                 ClearTxRing(pAC, &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW]);
1986         }
1987
1988         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
1989                 ("SkGeClose: done "));
1990
1991         pAC->MaxPorts--;
1992         pNet->Up = 0;
1993         MOD_DEC_USE_COUNT;
1994
1995         return (0);
1996 } /* SkGeClose */
1997
1998
1999 /*****************************************************************************
2000  *
2001  *      SkGeXmit - Linux frame transmit function
2002  *
2003  * Description:
2004  *      The system calls this function to send frames onto the wire.
2005  *      It puts the frame in the tx descriptor ring. If the ring is
2006  *      full then, the 'tbusy' flag is set.
2007  *
2008  * Returns:
2009  *      0, if everything is ok
2010  *      !=0, on error
2011  * WARNING: returning 1 in 'tbusy' case caused system crashes (double
2012  *      allocated skb's) !!!
2013  */
2014 #if 0
2015 static int SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev)
2016 #else
2017 int SkGeXmit(struct sk_buff *skb, struct SK_NET_DEVICE *dev)
2018 #endif
2019 {
2020 DEV_NET         *pNet;
2021 SK_AC           *pAC;
2022 int                     Rc;     /* return code of XmitFrame */
2023
2024         pNet = (DEV_NET*) dev->priv;
2025         pAC = pNet->pAC;
2026
2027 #if 0
2028         if ((!skb_shinfo(skb)->nr_frags) ||
2029 #else
2030         if (1 ||
2031 #endif
2032                 (pAC->GIni.GIChipId == CHIP_ID_GENESIS)) {
2033                 /* Don't activate scatter-gather and hardware checksum */
2034
2035                 if (pAC->RlmtNets == 2)
2036                         Rc = XmitFrame(
2037                                 pAC,
2038                                 &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW],
2039                                 skb);
2040                 else
2041                         Rc = XmitFrame(
2042                                 pAC,
2043                                 &pAC->TxPort[pAC->ActivePort][TX_PRIO_LOW],
2044                                 skb);
2045         } else {
2046 #if 0
2047                 /* scatter-gather and hardware TCP checksumming anabled*/
2048                 if (pAC->RlmtNets == 2)
2049                         Rc = XmitFrameSG(
2050                                 pAC,
2051                                 &pAC->TxPort[pNet->PortNr][TX_PRIO_LOW],
2052                                 skb);
2053                 else
2054                         Rc = XmitFrameSG(
2055                                 pAC,
2056                                 &pAC->TxPort[pAC->ActivePort][TX_PRIO_LOW],
2057                                 skb);
2058 #endif
2059         }
2060
2061         /* Transmitter out of resources? */
2062         if (Rc <= 0) {
2063                 netif_stop_queue(dev);
2064         }
2065
2066         /* If not taken, give buffer ownership back to the
2067          * queueing layer.
2068          */
2069         if (Rc < 0)
2070                 return (1);
2071
2072 #if 0
2073         dev->trans_start = jiffies;
2074 #endif
2075         return (0);
2076 } /* SkGeXmit */
2077
2078
2079 /*****************************************************************************
2080  *
2081  *      XmitFrame - fill one socket buffer into the transmit ring
2082  *
2083  * Description:
2084  *      This function puts a message into the transmit descriptor ring
2085  *      if there is a descriptors left.
2086  *      Linux skb's consist of only one continuous buffer.
2087  *      The first step locks the ring. It is held locked
2088  *      all time to avoid problems with SWITCH_../PORT_RESET.
2089  *      Then the descriptoris allocated.
2090  *      The second part is linking the buffer to the descriptor.
2091  *      At the very last, the Control field of the descriptor
2092  *      is made valid for the BMU and a start TX command is given
2093  *      if necessary.
2094  *
2095  * Returns:
2096  *      > 0 - on succes: the number of bytes in the message
2097  *      = 0 - on resource shortage: this frame sent or dropped, now
2098  *              the ring is full ( -> set tbusy)
2099  *      < 0 - on failure: other problems ( -> return failure to upper layers)
2100  */
2101 static int XmitFrame(
2102 SK_AC           *pAC,           /* pointer to adapter context */
2103 TX_PORT         *pTxPort,       /* pointer to struct of port to send to */
2104 struct sk_buff  *pMessage)      /* pointer to send-message */
2105 {
2106 TXD             *pTxd;          /* the rxd to fill */
2107 unsigned long   Flags;
2108 SK_U64          PhysAddr;
2109 int             BytesSend;
2110
2111         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
2112                 ("X"));
2113
2114         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
2115 #ifndef USE_TX_COMPLETE
2116         FreeTxDescriptors(pAC, pTxPort);
2117 #endif
2118         if (pTxPort->TxdRingFree == 0) {
2119                 /* no enough free descriptors in ring at the moment */
2120                 FreeTxDescriptors(pAC, pTxPort);
2121                 if (pTxPort->TxdRingFree == 0) {
2122                         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2123                         SK_PNMI_CNT_NO_TX_BUF(pAC, pTxPort->PortIndex);
2124                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2125                                 SK_DBGCAT_DRV_TX_PROGRESS,
2126                                 ("XmitFrame failed\n"));
2127                         /* this message can not be sent now */
2128                         /* Because tbusy seems to be set, the message should not be freed here */
2129                         /* It will be used by the scheduler of the ethernet handler */
2130                         return (-1);
2131                 }
2132         }
2133         /* advance head counter behind descriptor needed for this frame */
2134         pTxd = pTxPort->pTxdRingHead;
2135         pTxPort->pTxdRingHead = pTxd->pNextTxd;
2136         pTxPort->TxdRingFree--;
2137         /* the needed descriptor is reserved now */
2138
2139         /*
2140          * everything allocated ok, so add buffer to descriptor
2141          */
2142
2143 #ifdef SK_DUMP_TX
2144         DumpMsg(pMessage, "XmitFrame");
2145 #endif
2146
2147         /* set up descriptor and CONTROL dword */
2148 #if 0
2149         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2150                 virt_to_page(pMessage->data),
2151                 ((unsigned long) pMessage->data &
2152                 ~PAGE_MASK),
2153                 pMessage->len,
2154                 PCI_DMA_TODEVICE);
2155 #else
2156         PhysAddr = (SK_U64) pci_phys_to_mem(pAC->PciDev, (u32) pMessage->data);
2157 #endif
2158         pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2159         pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2160         pTxd->pMBuf = pMessage;
2161         pTxd->TBControl = TX_CTRL_OWN_BMU | TX_CTRL_STF |
2162                 TX_CTRL_CHECK_DEFAULT | TX_CTRL_SOFTWARE |
2163 #ifdef USE_TX_COMPLETE
2164                 TX_CTRL_EOF | TX_CTRL_EOF_IRQ | pMessage->len;
2165 #else
2166                 TX_CTRL_EOF | pMessage->len;
2167 #endif
2168
2169         if ((pTxPort->pTxdRingPrev->TBControl & TX_CTRL_OWN_BMU) == 0) {
2170                 /* previous descriptor already done, so give tx start cmd */
2171                 /* StartTx(pAC, pTxPort->HwAddr); */
2172                 SK_OUT8(pTxPort->HwAddr, TX_Q_CTRL, TX_Q_CTRL_START);
2173         }
2174         pTxPort->pTxdRingPrev = pTxd;
2175
2176
2177         BytesSend = pMessage->len;
2178         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2179         /* after releasing the lock, the skb may be immidiately freed */
2180         if (pTxPort->TxdRingFree != 0)
2181                 return (BytesSend);
2182         else
2183                 return (0);
2184
2185 } /* XmitFrame */
2186
2187 /*****************************************************************************
2188  *
2189  *      XmitFrameSG - fill one socket buffer into the transmit ring
2190  *                (use SG and TCP/UDP hardware checksumming)
2191  *
2192  * Description:
2193  *      This function puts a message into the transmit descriptor ring
2194  *      if there is a descriptors left.
2195  *
2196  * Returns:
2197  *      > 0 - on succes: the number of bytes in the message
2198  *      = 0 - on resource shortage: this frame sent or dropped, now
2199  *              the ring is full ( -> set tbusy)
2200  *      < 0 - on failure: other problems ( -> return failure to upper layers)
2201  */
2202 #if 0
2203 static int XmitFrameSG(
2204 SK_AC           *pAC,                   /* pointer to adapter context */
2205 TX_PORT         *pTxPort,               /* pointer to struct of port to send to */
2206 struct sk_buff  *pMessage)      /* pointer to send-message */
2207 {
2208
2209         int             i;
2210         int                     BytesSend;
2211         int                     hlength;
2212         int                     protocol;
2213         skb_frag_t              *sk_frag;
2214         TXD                     *pTxd;
2215         TXD                     *pTxdFst;
2216         TXD                     *pTxdLst;
2217         SK_U64          PhysAddr;
2218         unsigned long   Flags;
2219
2220         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
2221 #ifndef USE_TX_COMPLETE
2222         FreeTxDescriptors(pAC, pTxPort);
2223 #endif
2224         if ((skb_shinfo(pMessage)->nr_frags +1) > pTxPort->TxdRingFree) {
2225                 FreeTxDescriptors(pAC, pTxPort);
2226                 if ((skb_shinfo(pMessage)->nr_frags + 1) > pTxPort->TxdRingFree) {
2227                         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2228                         SK_PNMI_CNT_NO_TX_BUF(pAC, pTxPort->PortIndex);
2229                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2230                                 SK_DBGCAT_DRV_TX_PROGRESS,
2231                                 ("XmitFrameSG failed - Ring full\n"));
2232                                 /* this message can not be sent now */
2233                         return(-1);
2234                 }
2235         }
2236
2237
2238         pTxd = pTxPort->pTxdRingHead;
2239         pTxdFst = pTxd;
2240         pTxdLst = pTxd;
2241         BytesSend = 0;
2242         protocol = 0;
2243
2244         /* map first fragment (header) */
2245         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2246                         virt_to_page(pMessage->data),
2247                         ((unsigned long) pMessage->data & ~PAGE_MASK),
2248                         skb_headlen(pMessage),
2249                         PCI_DMA_TODEVICE);
2250
2251         pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2252         pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2253
2254         /* HW checksum? */
2255         if (pMessage->ip_summed == CHECKSUM_HW) {
2256                 pTxd->TBControl = TX_CTRL_STF |
2257                                   TX_CTRL_ST_FWD |
2258                                   skb_headlen(pMessage);
2259
2260                 /* We have to use the opcode for tcp here because the opcode for
2261                 udp is not working in the hardware yet (revision 2.0)*/
2262                 protocol = ((SK_U8)pMessage->data[23] & 0xf);
2263                 if ((protocol == 17) && (pAC->GIni.GIChipRev != 0))
2264                         pTxd->TBControl |=  BMU_UDP_CHECK;
2265                 else
2266                         pTxd->TBControl |= BMU_TCP_CHECK ;
2267
2268                 hlength = ((SK_U8)pMessage->data[14] & 0xf) * 4;
2269                 pTxd->TcpSumOfs = 0; /* PH-Checksum already claculated */
2270                 pTxd->TcpSumSt = 14+hlength+16;
2271                 pTxd->TcpSumWr = 14+hlength;
2272
2273         } else {
2274                 pTxd->TBControl = TX_CTRL_CHECK_DEFAULT |
2275                                   TX_CTRL_SOFTWARE |
2276                                   TX_CTRL_STF |
2277                                   skb_headlen(pMessage);
2278         }
2279
2280         pTxd = pTxd->pNextTxd;
2281         pTxPort->TxdRingFree--;
2282         BytesSend += skb_headlen(pMessage);
2283
2284
2285         /* Map SG fragments */
2286         for (i = 0; i < skb_shinfo(pMessage)->nr_frags; i++) {
2287                 sk_frag = &skb_shinfo(pMessage)->frags[i];
2288
2289                 /* we already have the proper value in entry */
2290                 PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2291                                                  sk_frag->page,
2292                                                  sk_frag->page_offset,
2293                                                  sk_frag->size,
2294                                                  PCI_DMA_TODEVICE);
2295
2296                 pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
2297                 pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2298                 pTxd->pMBuf = pMessage;
2299
2300                 /* HW checksum */
2301                 if (pMessage->ip_summed == CHECKSUM_HW) {
2302                         pTxd->TBControl = TX_CTRL_OWN_BMU |
2303                                           TX_CTRL_SOFTWARE |
2304                                           TX_CTRL_ST_FWD;
2305
2306                         /* We have to use the opcode for tcp here because the opcode for
2307                         udp is not working in the hardware yet (revision 2.0)*/
2308                         if ((protocol == 17) && (pAC->GIni.GIChipRev != 0))
2309                                 pTxd->TBControl |= BMU_UDP_CHECK ;
2310                         else
2311                                 pTxd->TBControl |= BMU_TCP_CHECK ;
2312
2313                 } else {
2314                         pTxd->TBControl = TX_CTRL_CHECK_DEFAULT |
2315                                           TX_CTRL_SOFTWARE |
2316                                           TX_CTRL_OWN_BMU;
2317                 }
2318
2319                 /* Last fragment  */
2320                 if( (i+1) == skb_shinfo(pMessage)->nr_frags )  {
2321 #ifdef USE_TX_COMPLETE
2322                         pTxd->TBControl |= TX_CTRL_EOF |
2323                                            TX_CTRL_EOF_IRQ |
2324                                            sk_frag->size;
2325 #else
2326                         pTxd->TBControl |= TX_CTRL_EOF |
2327                                            sk_frag->size;
2328 #endif
2329                         pTxdFst->TBControl |= TX_CTRL_OWN_BMU |
2330                                               TX_CTRL_SOFTWARE;
2331
2332                 } else {
2333                         pTxd->TBControl |= sk_frag->size;
2334                 }
2335                 pTxdLst = pTxd;
2336                 pTxd = pTxd->pNextTxd;
2337                 pTxPort->TxdRingFree--;
2338                 BytesSend += sk_frag->size;
2339         }
2340
2341         if ((pTxPort->pTxdRingPrev->TBControl & TX_CTRL_OWN_BMU) == 0) {
2342                 /* previous descriptor already done, so give tx start cmd */
2343                 /* StartTx(pAC, pTxPort->HwAddr); */
2344                 SK_OUT8(pTxPort->HwAddr, TX_Q_CTRL, TX_Q_CTRL_START);
2345         }
2346
2347         pTxPort->pTxdRingPrev = pTxdLst;
2348         pTxPort->pTxdRingHead = pTxd;
2349
2350         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
2351
2352         if (pTxPort->TxdRingFree > 0)
2353                 return (BytesSend);
2354         else
2355                 return (0);
2356 }
2357 #endif
2358
2359
2360 void dump_frag( SK_U8 *data, int length)
2361 {
2362         int i;
2363
2364         printk("Length: %d\n", length);
2365         for( i=0; i < length; i++ ) {
2366                 printk(" %02x", (SK_U8)*(data + i) );
2367                 if( !((i+1) % 20) )
2368                   printk("\n");
2369         }
2370         printk("\n\n");
2371
2372 }
2373
2374
2375 /*****************************************************************************
2376  *
2377  *      FreeTxDescriptors - release descriptors from the descriptor ring
2378  *
2379  * Description:
2380  *      This function releases descriptors from a transmit ring if they
2381  *      have been sent by the BMU.
2382  *      If a descriptors is sent, it can be freed and the message can
2383  *      be freed, too.
2384  *      The SOFTWARE controllable bit is used to prevent running around a
2385  *      completely free ring for ever. If this bit is no set in the
2386  *      frame (by XmitFrame), this frame has never been sent or is
2387  *      already freed.
2388  *      The Tx descriptor ring lock must be held while calling this function !!!
2389  *
2390  * Returns:
2391  *      none
2392  */
2393 static void FreeTxDescriptors(
2394 SK_AC   *pAC,           /* pointer to the adapter context */
2395 TX_PORT *pTxPort)       /* pointer to destination port structure */
2396 {
2397 TXD     *pTxd;          /* pointer to the checked descriptor */
2398 TXD     *pNewTail;      /* pointer to 'end' of the ring */
2399 SK_U32  Control;        /* TBControl field of descriptor */
2400 SK_U64  PhysAddr;       /* address of DMA mapping */
2401
2402         pNewTail = pTxPort->pTxdRingTail;
2403         pTxd = pNewTail;
2404         /*
2405          * loop forever; exits if TX_CTRL_SOFTWARE bit not set in start frame
2406          * or TX_CTRL_OWN_BMU bit set in any frame
2407          */
2408         while (1) {
2409                 Control = pTxd->TBControl;
2410                 if ((Control & TX_CTRL_SOFTWARE) == 0) {
2411                         /*
2412                          * software controllable bit is set in first
2413                          * fragment when given to BMU. Not set means that
2414                          * this fragment was never sent or is already
2415                          * freed ( -> ring completely free now).
2416                          */
2417                         pTxPort->pTxdRingTail = pTxd;
2418                         netif_wake_queue(pAC->dev[pTxPort->PortIndex]);
2419                         return;
2420                 }
2421                 if (Control & TX_CTRL_OWN_BMU) {
2422                         pTxPort->pTxdRingTail = pTxd;
2423                         if (pTxPort->TxdRingFree > 0) {
2424                                 netif_wake_queue(pAC->dev[pTxPort->PortIndex]);
2425                         }
2426                         return;
2427                 }
2428
2429                 /* release the DMA mapping */
2430                 PhysAddr = ((SK_U64) pTxd->VDataHigh) << (SK_U64) 32;
2431                 PhysAddr |= (SK_U64) pTxd->VDataLow;
2432                 pci_unmap_page(pAC->PciDev, PhysAddr,
2433                                  pTxd->pMBuf->len,
2434                                  PCI_DMA_TODEVICE);
2435
2436                 if (Control & TX_CTRL_EOF)
2437                         DEV_KFREE_SKB_ANY(pTxd->pMBuf); /* free message */
2438
2439                 pTxPort->TxdRingFree++;
2440                 pTxd->TBControl &= ~TX_CTRL_SOFTWARE;
2441                 pTxd = pTxd->pNextTxd; /* point behind fragment with EOF */
2442         } /* while(forever) */
2443 } /* FreeTxDescriptors */
2444
2445 /*****************************************************************************
2446  *
2447  *      FillRxRing - fill the receive ring with valid descriptors
2448  *
2449  * Description:
2450  *      This function fills the receive ring descriptors with data
2451  *      segments and makes them valid for the BMU.
2452  *      The active ring is filled completely, if possible.
2453  *      The non-active ring is filled only partial to save memory.
2454  *
2455  * Description of rx ring structure:
2456  *      head - points to the descriptor which will be used next by the BMU
2457  *      tail - points to the next descriptor to give to the BMU
2458  *
2459  * Returns:     N/A
2460  */
2461 static void FillRxRing(
2462 SK_AC           *pAC,           /* pointer to the adapter context */
2463 RX_PORT         *pRxPort)       /* ptr to port struct for which the ring
2464                                    should be filled */
2465 {
2466 unsigned long   Flags;
2467
2468         spin_lock_irqsave(&pRxPort->RxDesRingLock, Flags);
2469         while (pRxPort->RxdRingFree > pRxPort->RxFillLimit) {
2470                 if(!FillRxDescriptor(pAC, pRxPort))
2471                         break;
2472         }
2473         spin_unlock_irqrestore(&pRxPort->RxDesRingLock, Flags);
2474 } /* FillRxRing */
2475
2476
2477 /*****************************************************************************
2478  *
2479  *      FillRxDescriptor - fill one buffer into the receive ring
2480  *
2481  * Description:
2482  *      The function allocates a new receive buffer and
2483  *      puts it into the next descriptor.
2484  *
2485  * Returns:
2486  *      SK_TRUE - a buffer was added to the ring
2487  *      SK_FALSE - a buffer could not be added
2488  */
2489 static SK_BOOL FillRxDescriptor(
2490 SK_AC           *pAC,           /* pointer to the adapter context struct */
2491 RX_PORT         *pRxPort)       /* ptr to port struct of ring to fill */
2492 {
2493 struct sk_buff  *pMsgBlock;     /* pointer to a new message block */
2494 RXD             *pRxd;          /* the rxd to fill */
2495 SK_U16          Length;         /* data fragment length */
2496 SK_U64          PhysAddr;       /* physical address of a rx buffer */
2497
2498         pMsgBlock = alloc_skb(pAC->RxBufSize, GFP_ATOMIC);
2499         if (pMsgBlock == NULL) {
2500                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2501                         SK_DBGCAT_DRV_ENTRY,
2502                         ("%s: Allocation of rx buffer failed !\n",
2503                         pAC->dev[pRxPort->PortIndex]->name));
2504                 SK_PNMI_CNT_NO_RX_BUF(pAC, pRxPort->PortIndex);
2505                 return(SK_FALSE);
2506         }
2507         skb_reserve(pMsgBlock, 2); /* to align IP frames */
2508         /* skb allocated ok, so add buffer */
2509         pRxd = pRxPort->pRxdRingTail;
2510         pRxPort->pRxdRingTail = pRxd->pNextRxd;
2511         pRxPort->RxdRingFree--;
2512         Length = pAC->RxBufSize;
2513 #if 0
2514         PhysAddr = (SK_U64) pci_map_page(pAC->PciDev,
2515                 virt_to_page(pMsgBlock->data),
2516                 ((unsigned long) pMsgBlock->data &
2517                 ~PAGE_MASK),
2518                 pAC->RxBufSize - 2,
2519                 PCI_DMA_FROMDEVICE);
2520 #else
2521         PhysAddr = (SK_U64) pci_phys_to_mem(pAC->PciDev, (u32)pMsgBlock->data);
2522 #endif
2523         pRxd->VDataLow = (SK_U32) (PhysAddr & 0xffffffff);
2524         pRxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
2525         pRxd->pMBuf = pMsgBlock;
2526         pRxd->RBControl = RX_CTRL_OWN_BMU | RX_CTRL_STF |
2527                 RX_CTRL_EOF_IRQ | RX_CTRL_CHECK_CSUM | Length;
2528         return (SK_TRUE);
2529
2530 } /* FillRxDescriptor */
2531
2532
2533 /*****************************************************************************
2534  *
2535  *      ReQueueRxBuffer - fill one buffer back into the receive ring
2536  *
2537  * Description:
2538  *      Fill a given buffer back into the rx ring. The buffer
2539  *      has been previously allocated and aligned, and its phys.
2540  *      address calculated, so this is no more necessary.
2541  *
2542  * Returns: N/A
2543  */
2544 static void ReQueueRxBuffer(
2545 SK_AC           *pAC,           /* pointer to the adapter context struct */
2546 RX_PORT         *pRxPort,       /* ptr to port struct of ring to fill */
2547 struct sk_buff  *pMsg,          /* pointer to the buffer */
2548 SK_U32          PhysHigh,       /* phys address high dword */
2549 SK_U32          PhysLow)        /* phys address low dword */
2550 {
2551 RXD             *pRxd;          /* the rxd to fill */
2552 SK_U16          Length;         /* data fragment length */
2553
2554         pRxd = pRxPort->pRxdRingTail;
2555         pRxPort->pRxdRingTail = pRxd->pNextRxd;
2556         pRxPort->RxdRingFree--;
2557         Length = pAC->RxBufSize;
2558         pRxd->VDataLow = PhysLow;
2559         pRxd->VDataHigh = PhysHigh;
2560         pRxd->pMBuf = pMsg;
2561         pRxd->RBControl = RX_CTRL_OWN_BMU | RX_CTRL_STF |
2562                 RX_CTRL_EOF_IRQ | RX_CTRL_CHECK_CSUM | Length;
2563         return;
2564 } /* ReQueueRxBuffer */
2565
2566
2567 /*****************************************************************************
2568  *
2569  *      ReceiveIrq - handle a receive IRQ
2570  *
2571  * Description:
2572  *      This function is called when a receive IRQ is set.
2573  *      It walks the receive descriptor ring and sends up all
2574  *      frames that are complete.
2575  *
2576  * Returns:     N/A
2577  */
2578 #if 0
2579 static void ReceiveIrq(
2580 #else
2581 void ReceiveIrq(
2582 #endif
2583         SK_AC           *pAC,                   /* pointer to adapter context */
2584         RX_PORT         *pRxPort,               /* pointer to receive port struct */
2585         SK_BOOL         SlowPathLock)   /* indicates if SlowPathLock is needed */
2586 {
2587 RXD                             *pRxd;                  /* pointer to receive descriptors */
2588 SK_U32                  Control;                /* control field of descriptor */
2589 struct sk_buff  *pMsg;                  /* pointer to message holding frame */
2590 struct sk_buff  *pNewMsg;               /* pointer to a new message for copying frame */
2591 int                             FrameLength;    /* total length of received frame */
2592 SK_MBUF                 *pRlmtMbuf;             /* ptr to a buffer for giving a frame to rlmt */
2593 SK_EVPARA               EvPara;                 /* an event parameter union */
2594 unsigned long   Flags;                  /* for spin lock */
2595 int                             PortIndex = pRxPort->PortIndex;
2596 unsigned int    Offset;
2597 unsigned int    NumBytes;
2598 unsigned int    ForRlmt;
2599 SK_BOOL                 IsBc;
2600 SK_BOOL                 IsMc;
2601 SK_BOOL  IsBadFrame;                    /* Bad frame */
2602
2603 SK_U32                  FrameStat;
2604 unsigned short  Csum1;
2605 unsigned short  Csum2;
2606 unsigned short  Type;
2607 #if 0
2608 int                             Result;
2609 #endif
2610 SK_U64                  PhysAddr;
2611
2612 rx_start:
2613         /* do forever; exit if RX_CTRL_OWN_BMU found */
2614         for ( pRxd = pRxPort->pRxdRingHead ;
2615                   pRxPort->RxdRingFree < pAC->RxDescrPerRing ;
2616                   pRxd = pRxd->pNextRxd,
2617                   pRxPort->pRxdRingHead = pRxd,
2618                   pRxPort->RxdRingFree ++) {
2619
2620                 /*
2621                  * For a better understanding of this loop
2622                  * Go through every descriptor beginning at the head
2623                  * Please note: the ring might be completely received so the OWN bit
2624                  * set is not a good crirteria to leave that loop.
2625                  * Therefore the RingFree counter is used.
2626                  * On entry of this loop pRxd is a pointer to the Rxd that needs
2627                  * to be checked next.
2628                  */
2629
2630                 Control = pRxd->RBControl;
2631
2632                 /* check if this descriptor is ready */
2633                 if ((Control & RX_CTRL_OWN_BMU) != 0) {
2634                         /* this descriptor is not yet ready */
2635                         /* This is the usual end of the loop */
2636                         /* We don't need to start the ring again */
2637                         FillRxRing(pAC, pRxPort);
2638                         return;
2639                 }
2640
2641                 /* get length of frame and check it */
2642                 FrameLength = Control & RX_CTRL_LEN_MASK;
2643                 if (FrameLength > pAC->RxBufSize) {
2644                         goto rx_failed;
2645                 }
2646
2647                 /* check for STF and EOF */
2648                 if ((Control & (RX_CTRL_STF | RX_CTRL_EOF)) !=
2649                         (RX_CTRL_STF | RX_CTRL_EOF)) {
2650                         goto rx_failed;
2651                 }
2652
2653                 /* here we have a complete frame in the ring */
2654                 pMsg = pRxd->pMBuf;
2655
2656                 FrameStat = pRxd->FrameStat;
2657
2658                 /* check for frame length mismatch */
2659 #define XMR_FS_LEN_SHIFT        18
2660 #define GMR_FS_LEN_SHIFT        16
2661                 if (pAC->GIni.GIChipId == CHIP_ID_GENESIS) {
2662                         if (FrameLength != (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)) {
2663                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2664                                         SK_DBGCAT_DRV_RX_PROGRESS,
2665                                         ("skge: Frame length mismatch (%u/%u).\n",
2666                                         FrameLength,
2667                                         (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)));
2668                                 goto rx_failed;
2669                         }
2670                 }
2671                 else {
2672                         if (FrameLength != (SK_U32) (FrameStat >> GMR_FS_LEN_SHIFT)) {
2673                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2674                                         SK_DBGCAT_DRV_RX_PROGRESS,
2675                                         ("skge: Frame length mismatch (%u/%u).\n",
2676                                         FrameLength,
2677                                         (SK_U32) (FrameStat >> XMR_FS_LEN_SHIFT)));
2678                                 goto rx_failed;
2679                         }
2680                 }
2681
2682                 /* Set Rx Status */
2683                 if (pAC->GIni.GIChipId == CHIP_ID_GENESIS) {
2684                         IsBc = (FrameStat & XMR_FS_BC) != 0;
2685                         IsMc = (FrameStat & XMR_FS_MC) != 0;
2686                         IsBadFrame = (FrameStat &
2687                                 (XMR_FS_ANY_ERR | XMR_FS_2L_VLAN)) != 0;
2688                 } else {
2689                         IsBc = (FrameStat & GMR_FS_BC) != 0;
2690                         IsMc = (FrameStat & GMR_FS_MC) != 0;
2691                         IsBadFrame = (((FrameStat & GMR_FS_ANY_ERR) != 0) ||
2692                                                         ((FrameStat & GMR_FS_RX_OK) == 0));
2693                 }
2694
2695                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 0,
2696                         ("Received frame of length %d on port %d\n",
2697                         FrameLength, PortIndex));
2698                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 0,
2699                         ("Number of free rx descriptors: %d\n",
2700                         pRxPort->RxdRingFree));
2701 /* DumpMsg(pMsg, "Rx"); */
2702
2703                 if ((Control & RX_CTRL_STAT_VALID) != RX_CTRL_STAT_VALID ||
2704                         (IsBadFrame)) {
2705 #if 0
2706                         (FrameStat & (XMR_FS_ANY_ERR | XMR_FS_2L_VLAN)) != 0) {
2707 #endif
2708                         /* there is a receive error in this frame */
2709                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2710                                 SK_DBGCAT_DRV_RX_PROGRESS,
2711                                 ("skge: Error in received frame, dropped!\n"
2712                                 "Control: %x\nRxStat: %x\n",
2713                                 Control, FrameStat));
2714
2715                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2716                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2717                         pci_dma_sync_single(pAC->PciDev,
2718                                                 (dma_addr_t) PhysAddr,
2719                                                 FrameLength,
2720                                                 PCI_DMA_FROMDEVICE);
2721                         ReQueueRxBuffer(pAC, pRxPort, pMsg,
2722                                 pRxd->VDataHigh, pRxd->VDataLow);
2723
2724                         continue;
2725                 }
2726
2727                 /*
2728                  * if short frame then copy data to reduce memory waste
2729                  */
2730                 if ((FrameLength < SK_COPY_THRESHOLD) &&
2731                         ((pNewMsg = alloc_skb(FrameLength+2, GFP_ATOMIC)) != NULL)) {
2732                         /*
2733                          * Short frame detected and allocation successfull
2734                          */
2735                         /* use new skb and copy data */
2736                         skb_reserve(pNewMsg, 2);
2737                         skb_put(pNewMsg, FrameLength);
2738                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2739                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2740
2741                         pci_dma_sync_single(pAC->PciDev,
2742                                                 (dma_addr_t) PhysAddr,
2743                                                 FrameLength,
2744                                                 PCI_DMA_FROMDEVICE);
2745                         eth_copy_and_sum(pNewMsg, pMsg->data,
2746                                 FrameLength, 0);
2747                         ReQueueRxBuffer(pAC, pRxPort, pMsg,
2748                                 pRxd->VDataHigh, pRxd->VDataLow);
2749                         pMsg = pNewMsg;
2750
2751                 }
2752                 else {
2753                         /*
2754                          * if large frame, or SKB allocation failed, pass
2755                          * the SKB directly to the networking
2756                          */
2757
2758                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2759                         PhysAddr |= (SK_U64) pRxd->VDataLow;
2760
2761                         /* release the DMA mapping */
2762                         pci_unmap_single(pAC->PciDev,
2763                                          PhysAddr,
2764                                          pAC->RxBufSize - 2,
2765                                          PCI_DMA_FROMDEVICE);
2766
2767                         /* set length in message */
2768                         skb_put(pMsg, FrameLength);
2769                         /* hardware checksum */
2770                         Type = ntohs(*((short*)&pMsg->data[12]));
2771                         if (Type == 0x800) {
2772                                 Csum1=le16_to_cpu(pRxd->TcpSums & 0xffff);
2773                                 Csum2=le16_to_cpu((pRxd->TcpSums >> 16) & 0xffff);
2774 #if 0
2775                                 if ((((Csum1 & 0xfffe) && (Csum2 & 0xfffe)) &&
2776                                         (pAC->GIni.GIChipId == CHIP_ID_GENESIS)) ||
2777                                         (pAC->GIni.GIChipId == CHIP_ID_YUKON)) {
2778                                         Result = SkCsGetReceiveInfo(pAC,
2779                                                 &pMsg->data[14],
2780                                                 Csum1, Csum2, pRxPort->PortIndex);
2781                                         if (Result ==
2782                                                 SKCS_STATUS_IP_FRAGMENT ||
2783                                                 Result ==
2784                                                 SKCS_STATUS_IP_CSUM_OK ||
2785                                                 Result ==
2786                                                 SKCS_STATUS_TCP_CSUM_OK ||
2787                                                 Result ==
2788                                                 SKCS_STATUS_UDP_CSUM_OK) {
2789                                                         pMsg->ip_summed =
2790                                                         CHECKSUM_UNNECESSARY;
2791                                         } else {
2792                                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2793                                                 SK_DBGCAT_DRV_RX_PROGRESS,
2794                                                 ("skge: CRC error. Frame dropped!\n"));
2795                                                 goto rx_failed;
2796                                         }
2797                                 }/* checksumControl calculation valid */
2798 #endif
2799                         } /* IP frame */
2800                 } /* frame > SK_COPY_TRESHOLD */
2801
2802                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("V"));
2803                 ForRlmt = SK_RLMT_RX_PROTOCOL;
2804 #if 0
2805                 IsBc = (FrameStat & XMR_FS_BC)==XMR_FS_BC;
2806 #endif
2807                 SK_RLMT_PRE_LOOKAHEAD(pAC, PortIndex, FrameLength,
2808                         IsBc, &Offset, &NumBytes);
2809                 if (NumBytes != 0) {
2810 #if 0
2811                         IsMc = (FrameStat & XMR_FS_MC)==XMR_FS_MC;
2812 #endif
2813                         SK_RLMT_LOOKAHEAD(pAC, PortIndex,
2814                                 &pMsg->data[Offset],
2815                                 IsBc, IsMc, &ForRlmt);
2816                 }
2817                 if (ForRlmt == SK_RLMT_RX_PROTOCOL) {
2818                                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("W"));
2819                         /* send up only frames from active port */
2820                         if ((PortIndex == pAC->ActivePort) ||
2821                                 (pAC->RlmtNets == 2)) {
2822                                 /* frame for upper layer */
2823                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 1,("U"));
2824 #ifdef xDEBUG
2825                                 DumpMsg(pMsg, "Rx");
2826 #endif
2827                                 SK_PNMI_CNT_RX_OCTETS_DELIVERED(pAC,
2828                                         FrameLength, pRxPort->PortIndex);
2829
2830 #if 0
2831                                 pMsg->dev = pAC->dev[pRxPort->PortIndex];
2832                                 pMsg->protocol = eth_type_trans(pMsg,
2833                                         pAC->dev[pRxPort->PortIndex]);
2834                                 netif_rx(pMsg);
2835                                 pAC->dev[pRxPort->PortIndex]->last_rx = jiffies;
2836 #else
2837                                 NetReceive(pMsg->data, pMsg->len);
2838                                 dev_kfree_skb_any(pMsg);
2839 #endif
2840                         }
2841                         else {
2842                                 /* drop frame */
2843                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2844                                         SK_DBGCAT_DRV_RX_PROGRESS,
2845                                         ("D"));
2846                                 DEV_KFREE_SKB(pMsg);
2847                         }
2848
2849                 } /* if not for rlmt */
2850                 else {
2851                         /* packet for rlmt */
2852                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2853                                 SK_DBGCAT_DRV_RX_PROGRESS, ("R"));
2854                         pRlmtMbuf = SkDrvAllocRlmtMbuf(pAC,
2855                                 pAC->IoBase, FrameLength);
2856                         if (pRlmtMbuf != NULL) {
2857                                 pRlmtMbuf->pNext = NULL;
2858                                 pRlmtMbuf->Length = FrameLength;
2859                                 pRlmtMbuf->PortIdx = PortIndex;
2860                                 EvPara.pParaPtr = pRlmtMbuf;
2861                                 memcpy((char*)(pRlmtMbuf->pData),
2862                                            (char*)(pMsg->data),
2863                                            FrameLength);
2864
2865                                 /* SlowPathLock needed? */
2866                                 if (SlowPathLock == SK_TRUE) {
2867                                         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
2868                                         SkEventQueue(pAC, SKGE_RLMT,
2869                                                 SK_RLMT_PACKET_RECEIVED,
2870                                                 EvPara);
2871                                         pAC->CheckQueue = SK_TRUE;
2872                                         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
2873                                 } else {
2874                                         SkEventQueue(pAC, SKGE_RLMT,
2875                                                 SK_RLMT_PACKET_RECEIVED,
2876                                                 EvPara);
2877                                         pAC->CheckQueue = SK_TRUE;
2878                                 }
2879
2880                                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
2881                                         SK_DBGCAT_DRV_RX_PROGRESS,
2882                                         ("Q"));
2883                         }
2884 #if 0
2885                         if ((pAC->dev[pRxPort->PortIndex]->flags &
2886                                 (IFF_PROMISC | IFF_ALLMULTI)) != 0 ||
2887                                 (ForRlmt & SK_RLMT_RX_PROTOCOL) ==
2888                                 SK_RLMT_RX_PROTOCOL) {
2889                                 pMsg->dev = pAC->dev[pRxPort->PortIndex];
2890                                 pMsg->protocol = eth_type_trans(pMsg,
2891                                         pAC->dev[pRxPort->PortIndex]);
2892                                 netif_rx(pMsg);
2893                                 pAC->dev[pRxPort->PortIndex]->last_rx = jiffies;
2894                         }
2895 #else
2896                         if (0) {
2897                         }
2898 #endif
2899                         else {
2900                                 DEV_KFREE_SKB(pMsg);
2901                         }
2902
2903                 } /* if packet for rlmt */
2904         } /* for ... scanning the RXD ring */
2905
2906         /* RXD ring is empty -> fill and restart */
2907         FillRxRing(pAC, pRxPort);
2908         /* do not start if called from Close */
2909         if (pAC->BoardLevel > 0) {
2910                 ClearAndStartRx(pAC, PortIndex);
2911         }
2912         return;
2913
2914 rx_failed:
2915         /* remove error frame */
2916         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ERROR,
2917                 ("Schrottdescriptor, length: 0x%x\n", FrameLength));
2918
2919         /* release the DMA mapping */
2920
2921         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
2922         PhysAddr |= (SK_U64) pRxd->VDataLow;
2923         pci_unmap_page(pAC->PciDev,
2924                          PhysAddr,
2925                          pAC->RxBufSize - 2,
2926                          PCI_DMA_FROMDEVICE);
2927         DEV_KFREE_SKB_IRQ(pRxd->pMBuf);
2928         pRxd->pMBuf = NULL;
2929         pRxPort->RxdRingFree++;
2930         pRxPort->pRxdRingHead = pRxd->pNextRxd;
2931         goto rx_start;
2932
2933 } /* ReceiveIrq */
2934
2935
2936 /*****************************************************************************
2937  *
2938  *      ClearAndStartRx - give a start receive command to BMU, clear IRQ
2939  *
2940  * Description:
2941  *      This function sends a start command and a clear interrupt
2942  *      command for one receive queue to the BMU.
2943  *
2944  * Returns: N/A
2945  *      none
2946  */
2947 static void ClearAndStartRx(
2948 SK_AC   *pAC,           /* pointer to the adapter context */
2949 int     PortIndex)      /* index of the receive port (XMAC) */
2950 {
2951         SK_OUT8(pAC->IoBase, RxQueueAddr[PortIndex]+RX_Q_CTRL,
2952                 RX_Q_CTRL_START | RX_Q_CTRL_CLR_I_EOF);
2953 } /* ClearAndStartRx */
2954
2955
2956 /*****************************************************************************
2957  *
2958  *      ClearTxIrq - give a clear transmit IRQ command to BMU
2959  *
2960  * Description:
2961  *      This function sends a clear tx IRQ command for one
2962  *      transmit queue to the BMU.
2963  *
2964  * Returns: N/A
2965  */
2966 static void ClearTxIrq(
2967 SK_AC   *pAC,           /* pointer to the adapter context */
2968 int     PortIndex,      /* index of the transmit port (XMAC) */
2969 int     Prio)           /* priority or normal queue */
2970 {
2971         SK_OUT8(pAC->IoBase, TxQueueAddr[PortIndex][Prio]+TX_Q_CTRL,
2972                 TX_Q_CTRL_CLR_I_EOF);
2973 } /* ClearTxIrq */
2974
2975
2976 /*****************************************************************************
2977  *
2978  *      ClearRxRing - remove all buffers from the receive ring
2979  *
2980  * Description:
2981  *      This function removes all receive buffers from the ring.
2982  *      The receive BMU must be stopped before calling this function.
2983  *
2984  * Returns: N/A
2985  */
2986 static void ClearRxRing(
2987 SK_AC   *pAC,           /* pointer to adapter context */
2988 RX_PORT *pRxPort)       /* pointer to rx port struct */
2989 {
2990 RXD             *pRxd;  /* pointer to the current descriptor */
2991 unsigned long   Flags;
2992 SK_U64          PhysAddr;
2993
2994         if (pRxPort->RxdRingFree == pAC->RxDescrPerRing) {
2995                 return;
2996         }
2997         spin_lock_irqsave(&pRxPort->RxDesRingLock, Flags);
2998         pRxd = pRxPort->pRxdRingHead;
2999         do {
3000                 if (pRxd->pMBuf != NULL) {
3001
3002                         PhysAddr = ((SK_U64) pRxd->VDataHigh) << (SK_U64)32;
3003                         PhysAddr |= (SK_U64) pRxd->VDataLow;
3004                         pci_unmap_page(pAC->PciDev,
3005                                          PhysAddr,
3006                                          pAC->RxBufSize - 2,
3007                                          PCI_DMA_FROMDEVICE);
3008                         DEV_KFREE_SKB(pRxd->pMBuf);
3009                         pRxd->pMBuf = NULL;
3010                 }
3011                 pRxd->RBControl &= RX_CTRL_OWN_BMU;
3012                 pRxd = pRxd->pNextRxd;
3013                 pRxPort->RxdRingFree++;
3014         } while (pRxd != pRxPort->pRxdRingTail);
3015         pRxPort->pRxdRingTail = pRxPort->pRxdRingHead;
3016         spin_unlock_irqrestore(&pRxPort->RxDesRingLock, Flags);
3017 } /* ClearRxRing */
3018
3019
3020 /*****************************************************************************
3021  *
3022  *      ClearTxRing - remove all buffers from the transmit ring
3023  *
3024  * Description:
3025  *      This function removes all transmit buffers from the ring.
3026  *      The transmit BMU must be stopped before calling this function
3027  *      and transmitting at the upper level must be disabled.
3028  *      The BMU own bit of all descriptors is cleared, the rest is
3029  *      done by calling FreeTxDescriptors.
3030  *
3031  * Returns: N/A
3032  */
3033 static void ClearTxRing(
3034 SK_AC   *pAC,           /* pointer to adapter context */
3035 TX_PORT *pTxPort)       /* pointer to tx prt struct */
3036 {
3037 TXD             *pTxd;          /* pointer to the current descriptor */
3038 int             i;
3039 unsigned long   Flags;
3040
3041         spin_lock_irqsave(&pTxPort->TxDesRingLock, Flags);
3042         pTxd = pTxPort->pTxdRingHead;
3043         for (i=0; i<pAC->TxDescrPerRing; i++) {
3044                 pTxd->TBControl &= ~TX_CTRL_OWN_BMU;
3045                 pTxd = pTxd->pNextTxd;
3046         }
3047         FreeTxDescriptors(pAC, pTxPort);
3048         spin_unlock_irqrestore(&pTxPort->TxDesRingLock, Flags);
3049 } /* ClearTxRing */
3050
3051
3052 #if 0
3053 /*****************************************************************************
3054  *
3055  *      SetQueueSizes - configure the sizes of rx and tx queues
3056  *
3057  * Description:
3058  *      This function assigns the sizes for active and passive port
3059  *      to the appropriate HWinit structure variables.
3060  *      The passive port(s) get standard values, all remaining RAM
3061  *      is given to the active port.
3062  *      The queue sizes are in kbyte and must be multiple of 8.
3063  *      The limits for the number of buffers filled into the rx rings
3064  *      is also set in this routine.
3065  *
3066  * Returns:
3067  *      none
3068  */
3069 static void SetQueueSizes(
3070 SK_AC   *pAC)   /* pointer to the adapter context */
3071 {
3072 int     StandbyRam;     /* adapter RAM used for a standby port */
3073 int     RemainingRam;   /* adapter RAM available for the active port */
3074 int     RxRam;          /* RAM used for the active port receive queue */
3075 int     i;              /* loop counter */
3076
3077 if (pAC->RlmtNets == 1) {
3078         StandbyRam = SK_RLMT_STANDBY_QRXSIZE + SK_RLMT_STANDBY_QXASIZE +
3079                 SK_RLMT_STANDBY_QXSSIZE;
3080         RemainingRam = pAC->GIni.GIRamSize -
3081                 (pAC->GIni.GIMacsFound-1) * StandbyRam;
3082         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3083                 pAC->GIni.GP[i].PRxQSize = SK_RLMT_STANDBY_QRXSIZE;
3084                 pAC->GIni.GP[i].PXSQSize = SK_RLMT_STANDBY_QXSSIZE;
3085                 pAC->GIni.GP[i].PXAQSize = SK_RLMT_STANDBY_QXASIZE;
3086         }
3087         RxRam = (RemainingRam * 8 / 10) & ~7;
3088         pAC->GIni.GP[pAC->ActivePort].PRxQSize = RxRam;
3089         pAC->GIni.GP[pAC->ActivePort].PXSQSize = 0;
3090         pAC->GIni.GP[pAC->ActivePort].PXAQSize =
3091                 (RemainingRam - RxRam) & ~7;
3092         pAC->RxQueueSize = RxRam;
3093         pAC->TxSQueueSize = 0;
3094         pAC->TxAQueueSize = (RemainingRam - RxRam) & ~7;
3095         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3096                 ("queue sizes settings - rx:%d  txA:%d txS:%d\n",
3097                 pAC->RxQueueSize,pAC->TxAQueueSize, pAC->TxSQueueSize));
3098 } else {
3099         RemainingRam = pAC->GIni.GIRamSize/pAC->GIni.GIMacsFound;
3100         RxRam = (RemainingRam * 8 / 10) & ~7;
3101         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3102                 pAC->GIni.GP[i].PRxQSize = RxRam;
3103                 pAC->GIni.GP[i].PXSQSize = 0;
3104                 pAC->GIni.GP[i].PXAQSize = (RemainingRam - RxRam) & ~7;
3105         }
3106
3107         pAC->RxQueueSize = RxRam;
3108         pAC->TxSQueueSize = 0;
3109         pAC->TxAQueueSize = (RemainingRam - RxRam) & ~7;
3110 }
3111         for (i=0; i<SK_MAX_MACS; i++) {
3112                 pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing;
3113         }
3114
3115         if (pAC->RlmtNets == 2) {
3116                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3117                         pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing - 100;
3118                 }
3119         } else {
3120                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3121                         pAC->RxPort[i].RxFillLimit = pAC->RxDescrPerRing - 100;
3122                 }
3123                 /*
3124                  * Do not set the Limit to 0, because this could cause
3125                  * wrap around with ReQueue'ed buffers (a buffer could
3126                  * be requeued in the same position, made accessable to
3127                  * the hardware, and the hardware could change its
3128                  * contents!
3129                  */
3130                 pAC->RxPort[pAC->ActivePort].RxFillLimit = 1;
3131         }
3132
3133 #ifdef DEBUG
3134         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3135                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_TX_PROGRESS,
3136                         ("i: %d,  RxQSize: %d,  PXSQsize: %d, PXAQSize: %d\n",
3137                         i,
3138                         pAC->GIni.GP[i].PRxQSize,
3139                         pAC->GIni.GP[i].PXSQSize,
3140                         pAC->GIni.GP[i].PXAQSize));
3141         }
3142 #endif
3143 } /* SetQueueSizes */
3144
3145
3146 /*****************************************************************************
3147  *
3148  *      SkGeSetMacAddr - Set the hardware MAC address
3149  *
3150  * Description:
3151  *      This function sets the MAC address used by the adapter.
3152  *
3153  * Returns:
3154  *      0, if everything is ok
3155  *      !=0, on error
3156  */
3157 static int SkGeSetMacAddr(struct SK_NET_DEVICE *dev, void *p)
3158 {
3159
3160 DEV_NET *pNet = (DEV_NET*) dev->priv;
3161 SK_AC   *pAC = pNet->pAC;
3162
3163 struct sockaddr *addr = p;
3164 unsigned long   Flags;
3165
3166         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3167                 ("SkGeSetMacAddr starts now...\n"));
3168         if(netif_running(dev))
3169                 return -EBUSY;
3170
3171         memcpy(dev->dev_addr, addr->sa_data,dev->addr_len);
3172
3173         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3174
3175         if (pAC->RlmtNets == 2)
3176                 SkAddrOverride(pAC, pAC->IoBase, pNet->NetNr,
3177                         (SK_MAC_ADDR*)dev->dev_addr, SK_ADDR_VIRTUAL_ADDRESS);
3178         else
3179                 SkAddrOverride(pAC, pAC->IoBase, pAC->ActivePort,
3180                         (SK_MAC_ADDR*)dev->dev_addr, SK_ADDR_VIRTUAL_ADDRESS);
3181
3182
3183         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3184         return 0;
3185 } /* SkGeSetMacAddr */
3186 #endif
3187
3188
3189 /*****************************************************************************
3190  *
3191  *      SkGeSetRxMode - set receive mode
3192  *
3193  * Description:
3194  *      This function sets the receive mode of an adapter. The adapter
3195  *      supports promiscuous mode, allmulticast mode and a number of
3196  *      multicast addresses. If more multicast addresses the available
3197  *      are selected, a hash function in the hardware is used.
3198  *
3199  * Returns:
3200  *      0, if everything is ok
3201  *      !=0, on error
3202  */
3203 #if 0
3204 static void SkGeSetRxMode(struct SK_NET_DEVICE *dev)
3205 {
3206
3207 DEV_NET         *pNet;
3208 SK_AC           *pAC;
3209
3210 struct dev_mc_list      *pMcList;
3211 int                     i;
3212 int                     PortIdx;
3213 unsigned long           Flags;
3214
3215         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3216                 ("SkGeSetRxMode starts now... "));
3217
3218         pNet = (DEV_NET*) dev->priv;
3219         pAC = pNet->pAC;
3220         if (pAC->RlmtNets == 1)
3221                 PortIdx = pAC->ActivePort;
3222         else
3223                 PortIdx = pNet->NetNr;
3224
3225         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3226         if (dev->flags & IFF_PROMISC) {
3227                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3228                         ("PROMISCUOUS mode\n"));
3229                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3230                         SK_PROM_MODE_LLC);
3231         } else if (dev->flags & IFF_ALLMULTI) {
3232                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3233                         ("ALLMULTI mode\n"));
3234                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3235                         SK_PROM_MODE_ALL_MC);
3236         } else {
3237                 SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
3238                         SK_PROM_MODE_NONE);
3239                 SkAddrMcClear(pAC, pAC->IoBase, PortIdx, 0);
3240
3241                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3242                         ("Number of MC entries: %d ", dev->mc_count));
3243
3244                 pMcList = dev->mc_list;
3245                 for (i=0; i<dev->mc_count; i++, pMcList = pMcList->next) {
3246                         SkAddrMcAdd(pAC, pAC->IoBase, PortIdx,
3247                                 (SK_MAC_ADDR*)pMcList->dmi_addr, 0);
3248                         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_MCA,
3249                                 ("%02x:%02x:%02x:%02x:%02x:%02x\n",
3250                                 pMcList->dmi_addr[0],
3251                                 pMcList->dmi_addr[1],
3252                                 pMcList->dmi_addr[2],
3253                                 pMcList->dmi_addr[3],
3254                                 pMcList->dmi_addr[4],
3255                                 pMcList->dmi_addr[5]));
3256                 }
3257                 SkAddrMcUpdate(pAC, pAC->IoBase, PortIdx);
3258         }
3259         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3260
3261         return;
3262 } /* SkGeSetRxMode */
3263
3264
3265 /*****************************************************************************
3266  *
3267  *      SkGeChangeMtu - set the MTU to another value
3268  *
3269  * Description:
3270  *      This function sets is called whenever the MTU size is changed
3271  *      (ifconfig mtu xxx dev ethX). If the MTU is bigger than standard
3272  *      ethernet MTU size, long frame support is activated.
3273  *
3274  * Returns:
3275  *      0, if everything is ok
3276  *      !=0, on error
3277  */
3278 static int SkGeChangeMtu(struct SK_NET_DEVICE *dev, int NewMtu)
3279 {
3280 DEV_NET         *pNet;
3281 DEV_NET         *pOtherNet;
3282 SK_AC           *pAC;
3283 unsigned long   Flags;
3284 int             i;
3285 SK_EVPARA       EvPara;
3286
3287         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3288                 ("SkGeChangeMtu starts now...\n"));
3289
3290         pNet = (DEV_NET*) dev->priv;
3291         pAC = pNet->pAC;
3292
3293         if ((NewMtu < 68) || (NewMtu > SK_JUMBO_MTU)) {
3294                 return -EINVAL;
3295         }
3296
3297         if(pAC->BoardLevel != 2) {
3298                 return -EINVAL;
3299         }
3300
3301         pNet->Mtu = NewMtu;
3302         pOtherNet = (DEV_NET*)pAC->dev[1 - pNet->NetNr]->priv;
3303         if ((pOtherNet->Mtu > 1500) && (NewMtu <= 1500) && (pOtherNet->Up==1)) {
3304                 return(0);
3305         }
3306
3307         EvPara.Para32[0] = pNet->NetNr;
3308         EvPara.Para32[1] = -1;
3309
3310         pAC->RxBufSize = NewMtu + 32;
3311         dev->mtu = NewMtu;
3312
3313         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3314                 ("New MTU: %d\n", NewMtu));
3315
3316         /* prevent reconfiguration while changing the MTU */
3317
3318         /* disable interrupts */
3319         SK_OUT32(pAC->IoBase, B0_IMSK, 0);
3320         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3321
3322         /* Found more than one port */
3323         if ((pAC->GIni.GIMacsFound == 2 ) &&
3324                 (pAC->RlmtNets == 2)) {
3325                         /* Stop both ports */
3326                         EvPara.Para32[0] = 0;
3327                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3328                         EvPara.Para32[0] = 1;
3329                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3330         } else {
3331                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
3332         }
3333
3334         SkEventDispatcher(pAC, pAC->IoBase);
3335
3336         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3337                 spin_lock_irqsave(
3338                         &pAC->TxPort[i][TX_PRIO_LOW].TxDesRingLock, Flags);
3339                 netif_stop_queue(pAC->dev[i]);
3340
3341         }
3342
3343         /*
3344          * adjust number of rx buffers allocated
3345          */
3346         if (NewMtu > 1500) {
3347                 /* use less rx buffers */
3348                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3349                         /* Found more than one port */
3350                         if ((pAC->GIni.GIMacsFound == 2 ) &&
3351                                 (pAC->RlmtNets == 2)) {
3352                                         pAC->RxPort[i].RxFillLimit =
3353                                                 pAC->RxDescrPerRing - 100;
3354                         } else {
3355                                 if (i == pAC->ActivePort)
3356                                         pAC->RxPort[i].RxFillLimit =
3357                                                 pAC->RxDescrPerRing - 100;
3358                                 else
3359                                         pAC->RxPort[i].RxFillLimit =
3360                                                 pAC->RxDescrPerRing - 10;
3361                         }
3362                 }
3363         }
3364         else {
3365                 /* use normal amount of rx buffers */
3366                 for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3367                         /* Found more than one port */
3368                         if ((pAC->GIni.GIMacsFound == 2 ) &&
3369                                 (pAC->RlmtNets == 2)) {
3370                                         pAC->RxPort[i].RxFillLimit = 1;
3371                         } else {
3372                                 if (i == pAC->ActivePort)
3373                                         pAC->RxPort[i].RxFillLimit = 1;
3374                                 else
3375                                         pAC->RxPort[i].RxFillLimit =
3376                                                 pAC->RxDescrPerRing - 100;
3377                         }
3378                 }
3379         }
3380
3381         SkGeDeInit(pAC, pAC->IoBase);
3382
3383         /*
3384          * enable/disable hardware support for long frames
3385          */
3386         if (NewMtu > 1500) {
3387 /*              pAC->JumboActivated = SK_TRUE; /#* is never set back !!! */
3388                 pAC->GIni.GIPortUsage = SK_JUMBO_LINK;
3389         }
3390         else {
3391                 if ((pAC->GIni.GIMacsFound == 2 ) &&
3392                         (pAC->RlmtNets == 2)) {
3393                         pAC->GIni.GIPortUsage = SK_MUL_LINK;
3394                 } else {
3395                         pAC->GIni.GIPortUsage = SK_RED_LINK;
3396                 }
3397         }
3398
3399         SkGeInit(   pAC, pAC->IoBase, 1);
3400         SkI2cInit(  pAC, pAC->IoBase, 1);
3401         SkEventInit(pAC, pAC->IoBase, 1);
3402         SkPnmiInit( pAC, pAC->IoBase, 1);
3403         SkAddrInit( pAC, pAC->IoBase, 1);
3404         SkRlmtInit( pAC, pAC->IoBase, 1);
3405         SkTimerInit(pAC, pAC->IoBase, 1);
3406
3407         /*
3408          * tschilling:
3409          * Speed and others are set back to default in level 1 init!
3410          */
3411         GetConfiguration(pAC);
3412
3413         SkGeInit(   pAC, pAC->IoBase, 2);
3414         SkI2cInit(  pAC, pAC->IoBase, 2);
3415         SkEventInit(pAC, pAC->IoBase, 2);
3416         SkPnmiInit( pAC, pAC->IoBase, 2);
3417         SkAddrInit( pAC, pAC->IoBase, 2);
3418         SkRlmtInit( pAC, pAC->IoBase, 2);
3419         SkTimerInit(pAC, pAC->IoBase, 2);
3420
3421         /*
3422          * clear and reinit the rx rings here
3423          */
3424         for (i=0; i<pAC->GIni.GIMacsFound; i++) {
3425                 ReceiveIrq(pAC, &pAC->RxPort[i], SK_TRUE);
3426                 ClearRxRing(pAC, &pAC->RxPort[i]);
3427                 FillRxRing(pAC, &pAC->RxPort[i]);
3428
3429                 /* Enable transmit descriptor polling. */
3430                 SkGePollTxD(pAC, pAC->IoBase, i, SK_TRUE);
3431                 FillRxRing(pAC, &pAC->RxPort[i]);
3432         };
3433
3434         SkGeYellowLED(pAC, pAC->IoBase, 1);
3435
3436 #ifdef USE_INT_MOD
3437         {
3438                 unsigned long ModBase;
3439                 ModBase = 53125000 / INTS_PER_SEC;
3440                 SK_OUT32(pAC->IoBase, B2_IRQM_INI, ModBase);
3441                 SK_OUT32(pAC->IoBase, B2_IRQM_MSK, IRQ_MOD_MASK);
3442                 SK_OUT32(pAC->IoBase, B2_IRQM_CTRL, TIM_START);
3443         }
3444 #endif
3445
3446         netif_start_queue(pAC->dev[pNet->PortNr]);
3447         for (i=pAC->GIni.GIMacsFound-1; i>=0; i--) {
3448                 spin_unlock(&pAC->TxPort[i][TX_PRIO_LOW].TxDesRingLock);
3449         }
3450
3451         /* enable Interrupts */
3452         SK_OUT32(pAC->IoBase, B0_IMSK, IRQ_MASK);
3453         SK_OUT32(pAC->IoBase, B0_HWE_IMSK, IRQ_HWE_MASK);
3454
3455         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3456         SkEventDispatcher(pAC, pAC->IoBase);
3457
3458         /* Found more than one port */
3459         if ((pAC->GIni.GIMacsFound == 2 ) &&
3460                 (pAC->RlmtNets == 2)) {
3461                         /* Start both ports */
3462                         EvPara.Para32[0] = pAC->RlmtNets;
3463                         EvPara.Para32[1] = -1;
3464                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_SET_NETS,
3465                                 EvPara);
3466
3467
3468                         EvPara.Para32[1] = -1;
3469                         EvPara.Para32[0] = pNet->PortNr;
3470                         SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3471
3472                         if (pOtherNet->Up) {
3473                                 EvPara.Para32[0] = pOtherNet->PortNr;
3474                                 SkEventQueue(pAC, SKGE_RLMT,
3475                                         SK_RLMT_START, EvPara);
3476                         }
3477         } else {
3478                 SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
3479         }
3480
3481         SkEventDispatcher(pAC, pAC->IoBase);
3482         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3483
3484         return 0;
3485 } /* SkGeChangeMtu */
3486
3487
3488 /*****************************************************************************
3489  *
3490  *      SkGeStats - return ethernet device statistics
3491  *
3492  * Description:
3493  *      This function return statistic data about the ethernet device
3494  *      to the operating system.
3495  *
3496  * Returns:
3497  *      pointer to the statistic structure.
3498  */
3499 static struct net_device_stats *SkGeStats(struct SK_NET_DEVICE *dev)
3500 {
3501 DEV_NET *pNet = (DEV_NET*) dev->priv;
3502 SK_AC   *pAC = pNet->pAC;
3503 SK_PNMI_STRUCT_DATA *pPnmiStruct;       /* structure for all Pnmi-Data */
3504 SK_PNMI_STAT    *pPnmiStat;             /* pointer to virtual XMAC stat. data */
3505 SK_PNMI_CONF    *pPnmiConf;             /* pointer to virtual link config. */
3506 unsigned int    Size;                   /* size of pnmi struct */
3507 unsigned long   Flags;                  /* for spin lock */
3508
3509         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3510                 ("SkGeStats starts now...\n"));
3511         pPnmiStruct = &pAC->PnmiStruct;
3512         memset(pPnmiStruct, 0, sizeof(SK_PNMI_STRUCT_DATA));
3513         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3514         Size = SK_PNMI_STRUCT_SIZE;
3515                 SkPnmiGetStruct(pAC, pAC->IoBase, pPnmiStruct, &Size, pNet->NetNr);
3516         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3517         pPnmiStat = &pPnmiStruct->Stat[0];
3518         pPnmiConf = &pPnmiStruct->Conf[0];
3519
3520         pAC->stats.rx_packets = (SK_U32) pPnmiStruct->RxDeliveredCts & 0xFFFFFFFF;
3521         pAC->stats.tx_packets = (SK_U32) pPnmiStat->StatTxOkCts & 0xFFFFFFFF;
3522         pAC->stats.rx_bytes = (SK_U32) pPnmiStruct->RxOctetsDeliveredCts;
3523         pAC->stats.tx_bytes = (SK_U32) pPnmiStat->StatTxOctetsOkCts;
3524
3525         if (pNet->Mtu <= 1500) {
3526                 pAC->stats.rx_errors = (SK_U32) pPnmiStruct->InErrorsCts & 0xFFFFFFFF;
3527         } else {
3528                 pAC->stats.rx_errors = (SK_U32) ((pPnmiStruct->InErrorsCts -
3529                         pPnmiStat->StatRxTooLongCts) & 0xFFFFFFFF);
3530         }
3531
3532
3533         if (pAC->GIni.GP[0].PhyType == SK_PHY_XMAC && pAC->HWRevision < 12)
3534                 pAC->stats.rx_errors = pAC->stats.rx_errors - pPnmiStat->StatRxShortsCts;
3535
3536         pAC->stats.tx_errors = (SK_U32) pPnmiStat->StatTxSingleCollisionCts & 0xFFFFFFFF;
3537         pAC->stats.rx_dropped = (SK_U32) pPnmiStruct->RxNoBufCts & 0xFFFFFFFF;
3538         pAC->stats.tx_dropped = (SK_U32) pPnmiStruct->TxNoBufCts & 0xFFFFFFFF;
3539         pAC->stats.multicast = (SK_U32) pPnmiStat->StatRxMulticastOkCts & 0xFFFFFFFF;
3540         pAC->stats.collisions = (SK_U32) pPnmiStat->StatTxSingleCollisionCts & 0xFFFFFFFF;
3541
3542         /* detailed rx_errors: */
3543         pAC->stats.rx_length_errors = (SK_U32) pPnmiStat->StatRxRuntCts & 0xFFFFFFFF;
3544         pAC->stats.rx_over_errors = (SK_U32) pPnmiStat->StatRxFifoOverflowCts & 0xFFFFFFFF;
3545         pAC->stats.rx_crc_errors = (SK_U32) pPnmiStat->StatRxFcsCts & 0xFFFFFFFF;
3546         pAC->stats.rx_frame_errors = (SK_U32) pPnmiStat->StatRxFramingCts & 0xFFFFFFFF;
3547         pAC->stats.rx_fifo_errors = (SK_U32) pPnmiStat->StatRxFifoOverflowCts & 0xFFFFFFFF;
3548         pAC->stats.rx_missed_errors = (SK_U32) pPnmiStat->StatRxMissedCts & 0xFFFFFFFF;
3549
3550         /* detailed tx_errors */
3551         pAC->stats.tx_aborted_errors = (SK_U32) 0;
3552         pAC->stats.tx_carrier_errors = (SK_U32) pPnmiStat->StatTxCarrierCts & 0xFFFFFFFF;
3553         pAC->stats.tx_fifo_errors = (SK_U32) pPnmiStat->StatTxFifoUnderrunCts & 0xFFFFFFFF;
3554         pAC->stats.tx_heartbeat_errors = (SK_U32) pPnmiStat->StatTxCarrierCts & 0xFFFFFFFF;
3555         pAC->stats.tx_window_errors = (SK_U32) 0;
3556
3557         return(&pAC->stats);
3558 } /* SkGeStats */
3559
3560
3561 /*****************************************************************************
3562  *
3563  *      SkGeIoctl - IO-control function
3564  *
3565  * Description:
3566  *      This function is called if an ioctl is issued on the device.
3567  *      There are three subfunction for reading, writing and test-writing
3568  *      the private MIB data structure (usefull for SysKonnect-internal tools).
3569  *
3570  * Returns:
3571  *      0, if everything is ok
3572  *      !=0, on error
3573  */
3574 static int SkGeIoctl(struct SK_NET_DEVICE *dev, struct ifreq *rq, int cmd)
3575 {
3576 DEV_NET         *pNet;
3577 SK_AC           *pAC;
3578
3579 SK_GE_IOCTL     Ioctl;
3580 unsigned int    Err = 0;
3581 int             Size;
3582
3583         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3584                 ("SkGeIoctl starts now...\n"));
3585
3586         pNet = (DEV_NET*) dev->priv;
3587         pAC = pNet->pAC;
3588
3589         if(copy_from_user(&Ioctl, rq->ifr_data, sizeof(SK_GE_IOCTL))) {
3590                 return -EFAULT;
3591         }
3592
3593         switch(cmd) {
3594         case SK_IOCTL_SETMIB:
3595         case SK_IOCTL_PRESETMIB:
3596                 if (!capable(CAP_NET_ADMIN)) return -EPERM;
3597         case SK_IOCTL_GETMIB:
3598                 if(copy_from_user(&pAC->PnmiStruct, Ioctl.pData,
3599                         Ioctl.Len<sizeof(pAC->PnmiStruct)?
3600                         Ioctl.Len : sizeof(pAC->PnmiStruct))) {
3601                         return -EFAULT;
3602                 }
3603                 Size = SkGeIocMib(pNet, Ioctl.Len, cmd);
3604                 if(copy_to_user(Ioctl.pData, &pAC->PnmiStruct,
3605                         Ioctl.Len<Size? Ioctl.Len : Size)) {
3606                         return -EFAULT;
3607                 }
3608                 Ioctl.Len = Size;
3609                 if(copy_to_user(rq->ifr_data, &Ioctl, sizeof(SK_GE_IOCTL))) {
3610                         return -EFAULT;
3611                 }
3612                 break;
3613         default:
3614                 Err = -EOPNOTSUPP;
3615         }
3616         return(Err);
3617 } /* SkGeIoctl */
3618
3619
3620 /*****************************************************************************
3621  *
3622  *      SkGeIocMib - handle a GetMib, SetMib- or PresetMib-ioctl message
3623  *
3624  * Description:
3625  *      This function reads/writes the MIB data using PNMI (Private Network
3626  *      Management Interface).
3627  *      The destination for the data must be provided with the
3628  *      ioctl call and is given to the driver in the form of
3629  *      a user space address.
3630  *      Copying from the user-provided data area into kernel messages
3631  *      and back is done by copy_from_user and copy_to_user calls in
3632  *      SkGeIoctl.
3633  *
3634  * Returns:
3635  *      returned size from PNMI call
3636  */
3637 static int SkGeIocMib(
3638 DEV_NET         *pNet,  /* pointer to the adapter context */
3639 unsigned int    Size,   /* length of ioctl data */
3640 int             mode)   /* flag for set/preset */
3641 {
3642 unsigned long   Flags;  /* for spin lock */
3643 SK_AC           *pAC;
3644
3645         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3646                 ("SkGeIocMib starts now...\n"));
3647         pAC = pNet->pAC;
3648         /* access MIB */
3649         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
3650         switch(mode) {
3651         case SK_IOCTL_GETMIB:
3652                 SkPnmiGetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3653                         pNet->NetNr);
3654                 break;
3655         case SK_IOCTL_PRESETMIB:
3656                 SkPnmiPreSetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3657                         pNet->NetNr);
3658                 break;
3659         case SK_IOCTL_SETMIB:
3660                 SkPnmiSetStruct(pAC, pAC->IoBase, &pAC->PnmiStruct, &Size,
3661                         pNet->NetNr);
3662                 break;
3663         default:
3664                 break;
3665         }
3666         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
3667         SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
3668                 ("MIB data access succeeded\n"));
3669         return (Size);
3670 } /* SkGeIocMib */
3671 #endif
3672
3673
3674 /*****************************************************************************
3675  *
3676  *      GetConfiguration - read configuration information
3677  *
3678  * Description:
3679  *      This function reads per-adapter configuration information from
3680  *      the options provided on the command line.
3681  *
3682  * Returns:
3683  *      none
3684  */
3685 static void GetConfiguration(
3686 SK_AC   *pAC)   /* pointer to the adapter context structure */
3687 {
3688 SK_I32  Port;           /* preferred port */
3689 int     LinkSpeed;      /* Link speed */
3690 int     AutoNeg;        /* auto negotiation off (0) or on (1) */
3691 int     DuplexCap;      /* duplex capabilities (0=both, 1=full, 2=half */
3692 int     MSMode;         /* master / slave mode selection */
3693 SK_BOOL AutoSet;
3694 SK_BOOL DupSet;
3695 /*
3696  *      The two parameters AutoNeg. and DuplexCap. map to one configuration
3697  *      parameter. The mapping is described by this table:
3698  *      DuplexCap ->    |       both    |       full    |       half    |
3699  *      AutoNeg         |               |               |               |
3700  *      -----------------------------------------------------------------
3701  *      Off             |    illegal    |       Full    |       Half    |
3702  *      -----------------------------------------------------------------
3703  *      On              |   AutoBoth    |   AutoFull    |   AutoHalf    |
3704  *      -----------------------------------------------------------------
3705  *      Sense           |   AutoSense   |   AutoSense   |   AutoSense   |
3706  */
3707 int     Capabilities[3][3] =
3708                 { {               -1, SK_LMODE_FULL,     SK_LMODE_HALF},
3709                   {SK_LMODE_AUTOBOTH, SK_LMODE_AUTOFULL, SK_LMODE_AUTOHALF},
3710                   {SK_LMODE_AUTOSENSE, SK_LMODE_AUTOSENSE, SK_LMODE_AUTOSENSE} };
3711 #define DC_BOTH 0
3712 #define DC_FULL 1
3713 #define DC_HALF 2
3714 #define AN_OFF  0
3715 #define AN_ON   1
3716 #define AN_SENS 2
3717
3718         /* settings for port A */
3719         /* settings link speed */
3720         LinkSpeed = SK_LSPEED_AUTO;     /* default: do auto select */
3721         if (Speed_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3722                 Speed_A[pAC->Index] != NULL) {
3723                 if (strcmp(Speed_A[pAC->Index],"")==0) {
3724                         LinkSpeed = SK_LSPEED_AUTO;
3725                 }
3726                 else if (strcmp(Speed_A[pAC->Index],"Auto")==0) {
3727                         LinkSpeed = SK_LSPEED_AUTO;
3728                 }
3729                 else if (strcmp(Speed_A[pAC->Index],"10")==0) {
3730                         LinkSpeed = SK_LSPEED_10MBPS;
3731                 }
3732                 else if (strcmp(Speed_A[pAC->Index],"100")==0) {
3733                         LinkSpeed = SK_LSPEED_100MBPS;
3734                 }
3735                 else if (strcmp(Speed_A[pAC->Index],"1000")==0) {
3736                         LinkSpeed = SK_LSPEED_1000MBPS;
3737                 }
3738                 else printk("%s: Illegal value for Speed_A\n",
3739                         pAC->dev[0]->name);
3740         }
3741
3742         /* Check speed parameter */
3743         /* Only copper type adapter and GE V2 cards */
3744         if (((pAC->GIni.GIChipId != CHIP_ID_YUKON) ||
3745                 (pAC->GIni.GICopperType != SK_TRUE)) &&
3746                 ((LinkSpeed != SK_LSPEED_AUTO) &&
3747                 (LinkSpeed != SK_LSPEED_1000MBPS))) {
3748                 printk("%s: Illegal value for Speed_A. "
3749                         "Not a copper card or GE V2 card\n    Using "
3750                         "speed 1000\n", pAC->dev[0]->name);
3751                 LinkSpeed = SK_LSPEED_1000MBPS;
3752         }
3753         pAC->GIni.GP[0].PLinkSpeed = LinkSpeed;
3754
3755         /* Autonegotiation */
3756         AutoNeg = AN_ON; /* tschilling: Default: Autonegotiation on! */
3757         AutoSet = SK_FALSE;
3758         if (AutoNeg_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3759                 AutoNeg_A[pAC->Index] != NULL) {
3760                 AutoSet = SK_TRUE;
3761                 if (strcmp(AutoNeg_A[pAC->Index],"")==0) {
3762                         AutoSet = SK_FALSE;
3763                 }
3764                 else if (strcmp(AutoNeg_A[pAC->Index],"On")==0) {
3765                         AutoNeg = AN_ON;
3766                 }
3767                 else if (strcmp(AutoNeg_A[pAC->Index],"Off")==0) {
3768                         AutoNeg = AN_OFF;
3769                 }
3770                 else if (strcmp(AutoNeg_A[pAC->Index],"Sense")==0) {
3771                         AutoNeg = AN_SENS;
3772                 }
3773                 else printk("%s: Illegal value for AutoNeg_A\n",
3774                         pAC->dev[0]->name);
3775         }
3776
3777         DuplexCap = DC_BOTH;
3778         DupSet = SK_FALSE;
3779         if (DupCap_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3780                 DupCap_A[pAC->Index] != NULL) {
3781                 DupSet = SK_TRUE;
3782                 if (strcmp(DupCap_A[pAC->Index],"")==0) {
3783                         DupSet = SK_FALSE;
3784                 }
3785                 else if (strcmp(DupCap_A[pAC->Index],"Both")==0) {
3786                         DuplexCap = DC_BOTH;
3787                 }
3788                 else if (strcmp(DupCap_A[pAC->Index],"Full")==0) {
3789                         DuplexCap = DC_FULL;
3790                 }
3791                 else if (strcmp(DupCap_A[pAC->Index],"Half")==0) {
3792                         DuplexCap = DC_HALF;
3793                 }
3794                 else printk("%s: Illegal value for DupCap_A\n",
3795                         pAC->dev[0]->name);
3796         }
3797
3798         /* check for illegal combinations */
3799         if (AutoSet && AutoNeg==AN_SENS && DupSet) {
3800                 printk("%s, Port A: DuplexCapabilities"
3801                         " ignored using Sense mode\n", pAC->dev[0]->name);
3802         }
3803         if (AutoSet && AutoNeg==AN_OFF && DupSet && DuplexCap==DC_BOTH){
3804                 printk("%s, Port A: Illegal combination"
3805                         " of values AutoNeg. and DuplexCap.\n    Using "
3806                         "Full Duplex\n", pAC->dev[0]->name);
3807
3808                 DuplexCap = DC_FULL;
3809         }
3810         if (AutoSet && AutoNeg==AN_OFF && !DupSet) {
3811                 DuplexCap = DC_FULL;
3812         }
3813
3814         if (!AutoSet && DupSet) {
3815                 printk("%s, Port A: Duplex setting not"
3816                         " possible in\n    default AutoNegotiation mode"
3817                         " (Sense).\n    Using AutoNegotiation On\n",
3818                         pAC->dev[0]->name);
3819                 AutoNeg = AN_ON;
3820         }
3821
3822         /* set the desired mode */
3823         pAC->GIni.GP[0].PLinkModeConf =
3824                 Capabilities[AutoNeg][DuplexCap];
3825
3826         pAC->GIni.GP[0].PFlowCtrlMode = SK_FLOW_MODE_SYM_OR_REM;
3827         if (FlowCtrl_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3828                 FlowCtrl_A[pAC->Index] != NULL) {
3829                 if (strcmp(FlowCtrl_A[pAC->Index],"") == 0) {
3830                 }
3831                 else if (strcmp(FlowCtrl_A[pAC->Index],"SymOrRem") == 0) {
3832                         pAC->GIni.GP[0].PFlowCtrlMode =
3833                                 SK_FLOW_MODE_SYM_OR_REM;
3834                 }
3835                 else if (strcmp(FlowCtrl_A[pAC->Index],"Sym")==0) {
3836                         pAC->GIni.GP[0].PFlowCtrlMode =
3837                                 SK_FLOW_MODE_SYMMETRIC;
3838                 }
3839                 else if (strcmp(FlowCtrl_A[pAC->Index],"LocSend")==0) {
3840                         pAC->GIni.GP[0].PFlowCtrlMode =
3841                                 SK_FLOW_MODE_LOC_SEND;
3842                 }
3843                 else if (strcmp(FlowCtrl_A[pAC->Index],"None")==0) {
3844                         pAC->GIni.GP[0].PFlowCtrlMode =
3845                                 SK_FLOW_MODE_NONE;
3846                 }
3847                 else printk("Illegal value for FlowCtrl_A\n");
3848         }
3849         if (AutoNeg==AN_OFF && pAC->GIni.GP[0].PFlowCtrlMode!=
3850                 SK_FLOW_MODE_NONE) {
3851                 printk("%s, Port A: FlowControl"
3852                         " impossible without AutoNegotiation,"
3853                         " disabled\n", pAC->dev[0]->name);
3854                 pAC->GIni.GP[0].PFlowCtrlMode = SK_FLOW_MODE_NONE;
3855         }
3856
3857         MSMode = SK_MS_MODE_AUTO; /* default: do auto select */
3858         if (Role_A != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3859                 Role_A[pAC->Index] != NULL) {
3860                 if (strcmp(Role_A[pAC->Index],"")==0) {
3861                 }
3862                 else if (strcmp(Role_A[pAC->Index],"Auto")==0) {
3863                         MSMode = SK_MS_MODE_AUTO;
3864                 }
3865                 else if (strcmp(Role_A[pAC->Index],"Master")==0) {
3866                         MSMode = SK_MS_MODE_MASTER;
3867                 }
3868                 else if (strcmp(Role_A[pAC->Index],"Slave")==0) {
3869                         MSMode = SK_MS_MODE_SLAVE;
3870                 }
3871                 else printk("%s: Illegal value for Role_A\n",
3872                         pAC->dev[0]->name);
3873         }
3874         pAC->GIni.GP[0].PMSMode = MSMode;
3875
3876
3877         /* settings for port B */
3878         /* settings link speed */
3879         LinkSpeed = SK_LSPEED_AUTO;     /* default: do auto select */
3880         if (Speed_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3881                 Speed_B[pAC->Index] != NULL) {
3882                 if (strcmp(Speed_B[pAC->Index],"")==0) {
3883                         LinkSpeed = SK_LSPEED_AUTO;
3884                 }
3885                 else if (strcmp(Speed_B[pAC->Index],"Auto")==0) {
3886                         LinkSpeed = SK_LSPEED_AUTO;
3887                 }
3888                 else if (strcmp(Speed_B[pAC->Index],"10")==0) {
3889                         LinkSpeed = SK_LSPEED_10MBPS;
3890                 }
3891                 else if (strcmp(Speed_B[pAC->Index],"100")==0) {
3892                         LinkSpeed = SK_LSPEED_100MBPS;
3893                 }
3894                 else if (strcmp(Speed_B[pAC->Index],"1000")==0) {
3895                         LinkSpeed = SK_LSPEED_1000MBPS;
3896                 }
3897                 else printk("%s: Illegal value for Speed_B\n",
3898                         pAC->dev[1]->name);
3899         }
3900
3901         /* Check speed parameter */
3902         /* Only copper type adapter and GE V2 cards */
3903         if (((pAC->GIni.GIChipId != CHIP_ID_YUKON) ||
3904                 (pAC->GIni.GICopperType != SK_TRUE)) &&
3905                 ((LinkSpeed != SK_LSPEED_AUTO) &&
3906                 (LinkSpeed != SK_LSPEED_1000MBPS))) {
3907                 printk("%s: Illegal value for Speed_B. "
3908                         "Not a copper card or GE V2 card\n    Using "
3909                         "speed 1000\n", pAC->dev[1]->name);
3910                 LinkSpeed = SK_LSPEED_1000MBPS;
3911         }
3912         pAC->GIni.GP[1].PLinkSpeed = LinkSpeed;
3913
3914         /* Auto negotiation */
3915         AutoNeg = AN_SENS; /* default: do auto Sense */
3916         AutoSet = SK_FALSE;
3917         if (AutoNeg_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3918                 AutoNeg_B[pAC->Index] != NULL) {
3919                 AutoSet = SK_TRUE;
3920                 if (strcmp(AutoNeg_B[pAC->Index],"")==0) {
3921                         AutoSet = SK_FALSE;
3922                 }
3923                 else if (strcmp(AutoNeg_B[pAC->Index],"On")==0) {
3924                         AutoNeg = AN_ON;
3925                 }
3926                 else if (strcmp(AutoNeg_B[pAC->Index],"Off")==0) {
3927                         AutoNeg = AN_OFF;
3928                 }
3929                 else if (strcmp(AutoNeg_B[pAC->Index],"Sense")==0) {
3930                         AutoNeg = AN_SENS;
3931                 }
3932                 else printk("Illegal value for AutoNeg_B\n");
3933         }
3934
3935         DuplexCap = DC_BOTH;
3936         DupSet = SK_FALSE;
3937         if (DupCap_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3938                 DupCap_B[pAC->Index] != NULL) {
3939                 DupSet = SK_TRUE;
3940                 if (strcmp(DupCap_B[pAC->Index],"")==0) {
3941                         DupSet = SK_FALSE;
3942                 }
3943                 else if (strcmp(DupCap_B[pAC->Index],"Both")==0) {
3944                         DuplexCap = DC_BOTH;
3945                 }
3946                 else if (strcmp(DupCap_B[pAC->Index],"Full")==0) {
3947                         DuplexCap = DC_FULL;
3948                 }
3949                 else if (strcmp(DupCap_B[pAC->Index],"Half")==0) {
3950                         DuplexCap = DC_HALF;
3951                 }
3952                 else printk("Illegal value for DupCap_B\n");
3953         }
3954
3955         /* check for illegal combinations */
3956         if (AutoSet && AutoNeg==AN_SENS && DupSet) {
3957                 printk("%s, Port B: DuplexCapabilities"
3958                         " ignored using Sense mode\n", pAC->dev[1]->name);
3959         }
3960         if (AutoSet && AutoNeg==AN_OFF && DupSet && DuplexCap==DC_BOTH){
3961                 printk("%s, Port B: Illegal combination"
3962                         " of values AutoNeg. and DuplexCap.\n    Using "
3963                         "Full Duplex\n", pAC->dev[1]->name);
3964
3965                 DuplexCap = DC_FULL;
3966         }
3967         if (AutoSet && AutoNeg==AN_OFF && !DupSet) {
3968                 DuplexCap = DC_FULL;
3969         }
3970
3971         if (!AutoSet && DupSet) {
3972                 printk("%s, Port B: Duplex setting not"
3973                         " possible in\n    default AutoNegotiation mode"
3974                         " (Sense).\n    Using AutoNegotiation On\n",
3975                         pAC->dev[1]->name);
3976                 AutoNeg = AN_ON;
3977         }
3978
3979         /* set the desired mode */
3980         pAC->GIni.GP[1].PLinkModeConf =
3981                 Capabilities[AutoNeg][DuplexCap];
3982
3983         pAC->GIni.GP[1].PFlowCtrlMode = SK_FLOW_MODE_SYM_OR_REM;
3984         if (FlowCtrl_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
3985                 FlowCtrl_B[pAC->Index] != NULL) {
3986                 if (strcmp(FlowCtrl_B[pAC->Index],"") == 0) {
3987                 }
3988                 else if (strcmp(FlowCtrl_B[pAC->Index],"SymOrRem") == 0) {
3989                         pAC->GIni.GP[1].PFlowCtrlMode =
3990                                 SK_FLOW_MODE_SYM_OR_REM;
3991                 }
3992                 else if (strcmp(FlowCtrl_B[pAC->Index],"Sym")==0) {
3993                         pAC->GIni.GP[1].PFlowCtrlMode =
3994                                 SK_FLOW_MODE_SYMMETRIC;
3995                 }
3996                 else if (strcmp(FlowCtrl_B[pAC->Index],"LocSend")==0) {
3997                         pAC->GIni.GP[1].PFlowCtrlMode =
3998                                 SK_FLOW_MODE_LOC_SEND;
3999                 }
4000                 else if (strcmp(FlowCtrl_B[pAC->Index],"None")==0) {
4001                         pAC->GIni.GP[1].PFlowCtrlMode =
4002                                 SK_FLOW_MODE_NONE;
4003                 }
4004                 else printk("Illegal value for FlowCtrl_B\n");
4005         }
4006         if (AutoNeg==AN_OFF && pAC->GIni.GP[1].PFlowCtrlMode!=
4007                 SK_FLOW_MODE_NONE) {
4008                 printk("%s, Port B: FlowControl"
4009                         " impossible without AutoNegotiation,"
4010                         " disabled\n", pAC->dev[1]->name);
4011                 pAC->GIni.GP[1].PFlowCtrlMode = SK_FLOW_MODE_NONE;
4012         }
4013
4014         MSMode = SK_MS_MODE_AUTO; /* default: do auto select */
4015         if (Role_B != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4016                 Role_B[pAC->Index] != NULL) {
4017                 if (strcmp(Role_B[pAC->Index],"")==0) {
4018                 }
4019                 else if (strcmp(Role_B[pAC->Index],"Auto")==0) {
4020                         MSMode = SK_MS_MODE_AUTO;
4021                 }
4022                 else if (strcmp(Role_B[pAC->Index],"Master")==0) {
4023                         MSMode = SK_MS_MODE_MASTER;
4024                 }
4025                 else if (strcmp(Role_B[pAC->Index],"Slave")==0) {
4026                         MSMode = SK_MS_MODE_SLAVE;
4027                 }
4028                 else printk("%s: Illegal value for Role_B\n",
4029                         pAC->dev[1]->name);
4030         }
4031         pAC->GIni.GP[1].PMSMode = MSMode;
4032
4033
4034         /* settings for both ports */
4035         pAC->ActivePort = 0;
4036         if (PrefPort != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4037                 PrefPort[pAC->Index] != NULL) {
4038                 if (strcmp(PrefPort[pAC->Index],"") == 0) { /* Auto */
4039                         pAC->ActivePort = 0;
4040                         pAC->Rlmt.Net[0].Preference = -1; /* auto */
4041                         pAC->Rlmt.Net[0].PrefPort = 0;
4042                 }
4043                 else if (strcmp(PrefPort[pAC->Index],"A") == 0) {
4044                         /*
4045                          * do not set ActivePort here, thus a port
4046                          * switch is issued after net up.
4047                          */
4048                         Port = 0;
4049                         pAC->Rlmt.Net[0].Preference = Port;
4050                         pAC->Rlmt.Net[0].PrefPort = Port;
4051                 }
4052                 else if (strcmp(PrefPort[pAC->Index],"B") == 0) {
4053                         /*
4054                          * do not set ActivePort here, thus a port
4055                          * switch is issued after net up.
4056                          */
4057                         Port = 1;
4058                         pAC->Rlmt.Net[0].Preference = Port;
4059                         pAC->Rlmt.Net[0].PrefPort = Port;
4060                 }
4061                 else printk("%s: Illegal value for PrefPort\n",
4062                         pAC->dev[0]->name);
4063         }
4064
4065         pAC->RlmtNets = 1;
4066
4067         if (RlmtMode != NULL && pAC->Index<SK_MAX_CARD_PARAM &&
4068                 RlmtMode[pAC->Index] != NULL) {
4069                 if (strcmp(RlmtMode[pAC->Index], "") == 0) {
4070                         pAC->RlmtMode = 0;
4071                 }
4072                 else if (strcmp(RlmtMode[pAC->Index], "CheckLinkState") == 0) {
4073                         pAC->RlmtMode = SK_RLMT_CHECK_LINK;
4074                 }
4075                 else if (strcmp(RlmtMode[pAC->Index], "CheckLocalPort") == 0) {
4076                         pAC->RlmtMode = SK_RLMT_CHECK_LINK |
4077                                 SK_RLMT_CHECK_LOC_LINK;
4078                 }
4079                 else if (strcmp(RlmtMode[pAC->Index], "CheckSeg") == 0) {
4080                         pAC->RlmtMode = SK_RLMT_CHECK_LINK |
4081                                 SK_RLMT_CHECK_LOC_LINK |
4082                                 SK_RLMT_CHECK_SEG;
4083                 }
4084                 else if ((strcmp(RlmtMode[pAC->Index], "DualNet") == 0) &&
4085                         (pAC->GIni.GIMacsFound == 2)) {
4086                                 pAC->RlmtMode = SK_RLMT_CHECK_LINK;
4087                                 pAC->RlmtNets = 2;
4088                 }
4089                 else {
4090                         printk("%s: Illegal value for"
4091                                 " RlmtMode, using default\n", pAC->dev[0]->name);
4092                         pAC->RlmtMode = 0;
4093                 }
4094         }
4095         else {
4096                 pAC->RlmtMode = 0;
4097         }
4098 } /* GetConfiguration */
4099
4100
4101 /*****************************************************************************
4102  *
4103  *      ProductStr - return a adapter identification string from vpd
4104  *
4105  * Description:
4106  *      This function reads the product name string from the vpd area
4107  *      and puts it the field pAC->DeviceString.
4108  *
4109  * Returns: N/A
4110  */
4111 static void ProductStr(
4112 SK_AC   *pAC            /* pointer to adapter context */
4113 )
4114 {
4115 int     StrLen = 80;            /* length of the string, defined in SK_AC */
4116 char    Keyword[] = VPD_NAME;   /* vpd productname identifier */
4117 int     ReturnCode;             /* return code from vpd_read */
4118 unsigned long Flags;
4119
4120         spin_lock_irqsave(&pAC->SlowPathLock, Flags);
4121         ReturnCode = VpdRead(pAC, pAC->IoBase, Keyword, pAC->DeviceStr,
4122                 &StrLen);
4123         spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
4124         if (ReturnCode != 0) {
4125                 /* there was an error reading the vpd data */
4126                 SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ERROR,
4127                         ("Error reading VPD data: %d\n", ReturnCode));
4128                 pAC->DeviceStr[0] = '\0';
4129         }
4130 } /* ProductStr */
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  *      DumpData - print a data area
4760  *
4761  * Description:
4762  *      This function prints a area of data to the system logfile/to the
4763  *      console.
4764  *
4765  * Returns: N/A
4766  *
4767  */
4768 static void DumpData(char *p, int size)
4769 {
4770 register int    i;
4771 int     haddr, addr;
4772 char    hex_buffer[180];
4773 char    asc_buffer[180];
4774 char    HEXCHAR[] = "0123456789ABCDEF";
4775
4776         addr = 0;
4777         haddr = 0;
4778         hex_buffer[0] = 0;
4779         asc_buffer[0] = 0;
4780         for (i=0; i < size; ) {
4781                 if (*p >= '0' && *p <='z')
4782                         asc_buffer[addr] = *p;
4783                 else
4784                         asc_buffer[addr] = '.';
4785                 addr++;
4786                 asc_buffer[addr] = 0;
4787                 hex_buffer[haddr] = HEXCHAR[(*p & 0xf0) >> 4];
4788                 haddr++;
4789                 hex_buffer[haddr] = HEXCHAR[*p & 0x0f];
4790                 haddr++;
4791                 hex_buffer[haddr] = ' ';
4792                 haddr++;
4793                 hex_buffer[haddr] = 0;
4794                 p++;
4795                 i++;
4796                 if (i%16 == 0) {
4797                         printk("%s  %s\n", hex_buffer, asc_buffer);
4798                         addr = 0;
4799                         haddr = 0;
4800                 }
4801         }
4802 } /* DumpData */
4803
4804
4805 /*****************************************************************************
4806  *
4807  *      DumpLong - print a data area as long values
4808  *
4809  * Description:
4810  *      This function prints a area of data to the system logfile/to the
4811  *      console.
4812  *
4813  * Returns: N/A
4814  *
4815  */
4816 static void DumpLong(char *pc, int size)
4817 {
4818 register int    i;
4819 int     haddr, addr;
4820 char    hex_buffer[180];
4821 char    asc_buffer[180];
4822 char    HEXCHAR[] = "0123456789ABCDEF";
4823 long    *p;
4824 int     l;
4825
4826         addr = 0;
4827         haddr = 0;
4828         hex_buffer[0] = 0;
4829         asc_buffer[0] = 0;
4830         p = (long*) pc;
4831         for (i=0; i < size; ) {
4832                 l = (long) *p;
4833                 hex_buffer[haddr] = HEXCHAR[(l >> 28) & 0xf];
4834                 haddr++;
4835                 hex_buffer[haddr] = HEXCHAR[(l >> 24) & 0xf];
4836                 haddr++;
4837                 hex_buffer[haddr] = HEXCHAR[(l >> 20) & 0xf];
4838                 haddr++;
4839                 hex_buffer[haddr] = HEXCHAR[(l >> 16) & 0xf];
4840                 haddr++;
4841                 hex_buffer[haddr] = HEXCHAR[(l >> 12) & 0xf];
4842                 haddr++;
4843                 hex_buffer[haddr] = HEXCHAR[(l >> 8) & 0xf];
4844                 haddr++;
4845                 hex_buffer[haddr] = HEXCHAR[(l >> 4) & 0xf];
4846                 haddr++;
4847                 hex_buffer[haddr] = HEXCHAR[l & 0x0f];
4848                 haddr++;
4849                 hex_buffer[haddr] = ' ';
4850                 haddr++;
4851                 hex_buffer[haddr] = 0;
4852                 p++;
4853                 i++;
4854                 if (i%8 == 0) {
4855                         printk("%4x %s\n", (i-8)*4, hex_buffer);
4856                         haddr = 0;
4857                 }
4858         }
4859         printk("------------------------\n");
4860 } /* DumpLong */
4861
4862 #endif
4863
4864 #endif /* CONFIG_SK98 */