SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/tokenring/tms380tr.c

   1 /*
   2  *  tms380tr.c: A network driver library for Texas Instruments TMS380-based
   3  *              Token Ring Adapters.
   4  *
   5  *  Originally sktr.c: Written 1997 by Christoph Goos
   6  *
   7  *  A fine result of the Linux Systems Network Architecture Project.
   8  *  http://www.linux-sna.org
   9  *
  10  *  This software may be used and distributed according to the terms
  11  *  of the GNU General Public License, incorporated herein by reference.
  12  *
  13  *  The following modules are currently available for card support:
  14  *      - tmspci (Generic PCI card support)
  15  *      - abyss (Madge PCI support)
  16  *      - tmsisa (SysKonnect TR4/16 ISA)
  17  *
  18  *  Sources:
  19  *      - The hardware related parts of this driver are take from
  20  *        the SysKonnect Token Ring driver for Windows NT.
  21  *      - I used the IBM Token Ring driver 'ibmtr.c' as a base for this
  22  *        driver, as well as the 'skeleton.c' driver by Donald Becker.
  23  *      - Also various other drivers in the linux source tree were taken
  24  *        as samples for some tasks.
  25  *      - TI TMS380 Second-Generation Token Ring User's Guide
  26  *      - TI datasheets for respective chips
  27  *      - David Hein at Texas Instruments
  28  *      - Various Madge employees
  29  *
  30  *  Maintainer(s):
  31  *    JS        Jay Schulist            jschlst@samba.org
  32  *    CG        Christoph Goos          cgoos@syskonnect.de
  33  *    AF        Adam Fritzler
  34  *    MLP       Mike Phillips           phillim@amtrak.com
  35  *    JF        Jochen Friedrich        jochen@scram.de
  36  *
  37  *  Modification History:
  38  *      29-Aug-97       CG      Created
  39  *      04-Apr-98       CG      Fixed problems caused by tok_timer_check
  40  *      10-Apr-98       CG      Fixed lockups at cable disconnection
  41  *      27-May-98       JS      Formated to Linux Kernel Format
  42  *      31-May-98       JS      Hacked in PCI support
  43  *      16-Jun-98       JS      Modulized for multiple cards with one driver
  44  *         Sep-99       AF      Renamed to tms380tr (supports more than SK's)
  45  *      23-Sep-99       AF      Added Compaq and Thomas-Conrad PCI support
  46  *                              Fixed a bug causing double copies on PCI
  47  *                              Fixed for new multicast stuff (2.2/2.3)
  48  *      25-Sep-99       AF      Uped TPL_NUM from 3 to 9
  49  *                              Removed extraneous 'No free TPL'
  50  *      22-Dec-99       AF      Added Madge PCI Mk2 support and generalized
  51  *                              parts of the initilization procedure.
  52  *      30-Dec-99       AF      Turned tms380tr into a library ala 8390.
  53  *                              Madge support is provided in the abyss module
  54  *                              Generic PCI support is in the tmspci module.
  55  *      30-Nov-00       JF      Updated PCI code to support IO MMU via
  56  *                              pci_map_static(). Alpha uses this MMU for ISA
  57  *                              as well.
  58  *      14-Jan-01       JF      Fix DMA on ifdown/ifup sequences. Some
  59  *                              cleanup.
  60  *      13-Jan-02       JF      Add spinlock to fix race condition.
  61  *      09-Nov-02       JF      Fixed printks to not SPAM the console during
  62  *                              normal operation.
  63  *      30-Dec-02       JF      Removed incorrect __init from
  64  *                              tms380tr_init_card.
  65  *      22-Jul-05       JF      Converted to dma-mapping.
  66  *
  67  *  To do:
  68  *    1. Multi/Broadcast packet handling (this may have fixed itself)
  69  *    2. Write a sktrisa module that includes the old ISA support (done)
  70  *    3. Allow modules to load their own microcode
  71  *    4. Speed up the BUD process -- freezing the kernel for 3+sec is
  72  *         quite unacceptable.
  73  *    5. Still a few remaining stalls when the cable is unplugged.
  74  */
  75
  76 #ifdef MODULE
  77 static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n";
  78 #endif
  79
  80 #include <linux/module.h>
  81 #include <linux/kernel.h>
  82 #include <linux/types.h>
  83 #include <linux/fcntl.h>
  84 #include <linux/interrupt.h>
  85 #include <linux/ptrace.h>
  86 #include <linux/ioport.h>
  87 #include <linux/in.h>
  88 #include <linux/string.h>
  89 #include <linux/time.h>
  90 #include <linux/errno.h>
  91 #include <linux/init.h>
  92 #include <linux/dma-mapping.h>
  93 #include <linux/delay.h>
  94 #include <linux/netdevice.h>
  95 #include <linux/etherdevice.h>
  96 #include <linux/skbuff.h>
  97 #include <linux/trdevice.h>
  98 #include <linux/firmware.h>
  99 #include <linux/bitops.h>
 100
 101 #include <asm/system.h>
 102 #include <asm/io.h>
 103 #include <asm/dma.h>
 104 #include <asm/irq.h>
 105 #include <asm/uaccess.h>
 106
 107 #include "tms380tr.h"           /* Our Stuff */
 108
 109 /* Use 0 for production, 1 for verification, 2 for debug, and
 110  * 3 for very verbose debug.
 111  */
 112 #ifndef TMS380TR_DEBUG
 113 #define TMS380TR_DEBUG 0
 114 #endif
 115 static unsigned int tms380tr_debug = TMS380TR_DEBUG;
 116
 117 /* Index to functions, as function prototypes.
 118  * Alphabetical by function name.
 119  */
 120
 121 /* "A" */
 122 /* "B" */
 123 static int      tms380tr_bringup_diags(struct net_device *dev);
 124 /* "C" */
 125 static void     tms380tr_cancel_tx_queue(struct net_local* tp);
 126 static int      tms380tr_chipset_init(struct net_device *dev);
 127 static void     tms380tr_chk_irq(struct net_device *dev);
 128 static void     tms380tr_chk_outstanding_cmds(struct net_device *dev);
 129 static void     tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
 130 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType);
 131 int             tms380tr_close(struct net_device *dev);
 132 static void     tms380tr_cmd_status_irq(struct net_device *dev);
 133 /* "D" */
 134 static void     tms380tr_disable_interrupts(struct net_device *dev);
 135 #if TMS380TR_DEBUG > 0
 136 static void     tms380tr_dump(unsigned char *Data, int length);
 137 #endif
 138 /* "E" */
 139 static void     tms380tr_enable_interrupts(struct net_device *dev);
 140 static void     tms380tr_exec_cmd(struct net_device *dev, unsigned short Command);
 141 static void     tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
 142 /* "F" */
 143 /* "G" */
 144 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev);
 145 /* "H" */
 146 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
 147                                                        struct net_device *dev);
 148 /* "I" */
 149 static int      tms380tr_init_adapter(struct net_device *dev);
 150 static void     tms380tr_init_ipb(struct net_local *tp);
 151 static void     tms380tr_init_net_local(struct net_device *dev);
 152 static void     tms380tr_init_opb(struct net_device *dev);
 153 /* "M" */
 154 /* "O" */
 155 int             tms380tr_open(struct net_device *dev);
 156 static void     tms380tr_open_adapter(struct net_device *dev);
 157 /* "P" */
 158 /* "R" */
 159 static void     tms380tr_rcv_status_irq(struct net_device *dev);
 160 static int      tms380tr_read_ptr(struct net_device *dev);
 161 static void     tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
 162                         unsigned short Address, int Length);
 163 static int      tms380tr_reset_adapter(struct net_device *dev);
 164 static void     tms380tr_reset_interrupt(struct net_device *dev);
 165 static void     tms380tr_ring_status_irq(struct net_device *dev);
 166 /* "S" */
 167 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
 168                                               struct net_device *dev);
 169 static void     tms380tr_set_multicast_list(struct net_device *dev);
 170 static int      tms380tr_set_mac_address(struct net_device *dev, void *addr);
 171 /* "T" */
 172 static void     tms380tr_timer_chk(unsigned long data);
 173 static void     tms380tr_timer_end_wait(unsigned long data);
 174 static void     tms380tr_tx_status_irq(struct net_device *dev);
 175 /* "U" */
 176 static void     tms380tr_update_rcv_stats(struct net_local *tp,
 177                         unsigned char DataPtr[], unsigned int Length);
 178 /* "W" */
 179 void            tms380tr_wait(unsigned long time);
 180 static void     tms380tr_write_rpl_status(RPL *rpl, unsigned int Status);
 181 static void     tms380tr_write_tpl_status(TPL *tpl, unsigned int Status);
 182
 183 #define SIFREADB(reg) \
 184         (((struct net_local *)netdev_priv(dev))->sifreadb(dev, reg))
 185 #define SIFWRITEB(val, reg) \
 186         (((struct net_local *)netdev_priv(dev))->sifwriteb(dev, val, reg))
 187 #define SIFREADW(reg) \
 188         (((struct net_local *)netdev_priv(dev))->sifreadw(dev, reg))
 189 #define SIFWRITEW(val, reg) \
 190         (((struct net_local *)netdev_priv(dev))->sifwritew(dev, val, reg))
 191
 192
 193
 194 #if 0 /* TMS380TR_DEBUG > 0 */
 195 static int madgemc_sifprobe(struct net_device *dev)
 196 {
 197         unsigned char old, chk1, chk2;
 198
 199         old = SIFREADB(SIFADR);  /* Get the old SIFADR value */
 200
 201         chk1 = 0;       /* Begin with check value 0 */
 202         do {
 203                 madgemc_setregpage(dev, 0);
 204                 /* Write new SIFADR value */
 205                 SIFWRITEB(chk1, SIFADR);
 206                 chk2 = SIFREADB(SIFADR);
 207                 if (chk2 != chk1)
 208                         return -1;
 209
 210                 madgemc_setregpage(dev, 1);
 211                 /* Read, invert and write */
 212                 chk2 = SIFREADB(SIFADD);
 213                 if (chk2 != chk1)
 214                         return -1;
 215
 216                 madgemc_setregpage(dev, 0);
 217                 chk2 ^= 0x0FE;
 218                 SIFWRITEB(chk2, SIFADR);
 219
 220                 /* Read, invert and compare */
 221                 madgemc_setregpage(dev, 1);
 222                 chk2 = SIFREADB(SIFADD);
 223                 madgemc_setregpage(dev, 0);
 224                 chk2 ^= 0x0FE;
 225
 226                 if(chk1 != chk2)
 227                         return (-1);    /* No adapter */
 228                 chk1 -= 2;
 229         } while(chk1 != 0);     /* Repeat 128 times (all byte values) */
 230
 231         madgemc_setregpage(dev, 0); /* sanity */
 232         /* Restore the SIFADR value */
 233         SIFWRITEB(old, SIFADR);
 234
 235         return (0);
 236 }
 237 #endif
 238
 239 /*
 240  * Open/initialize the board. This is called sometime after
 241  * booting when the 'ifconfig' program is run.
 242  *
 243  * This routine should set everything up anew at each open, even
 244  * registers that "should" only need to be set once at boot, so that
 245  * there is non-reboot way to recover if something goes wrong.
 246  */
 247 int tms380tr_open(struct net_device *dev)
 248 {
 249         struct net_local *tp = netdev_priv(dev);
 250         int err;
 251
 252         /* init the spinlock */
 253         spin_lock_init(&tp->lock);
 254         init_timer(&tp->timer);
 255
 256         /* Reset the hardware here. Don't forget to set the station address. */
 257
 258 #ifdef CONFIG_ISA
 259         if(dev->dma > 0)
 260         {
 261                 unsigned long flags=claim_dma_lock();
 262                 disable_dma(dev->dma);
 263                 set_dma_mode(dev->dma, DMA_MODE_CASCADE);
 264                 enable_dma(dev->dma);
 265                 release_dma_lock(flags);
 266         }
 267 #endif
 268
 269         err = tms380tr_chipset_init(dev);
 270         if(err)
 271         {
 272                 printk(KERN_INFO "%s: Chipset initialization error\n",
 273                         dev->name);
 274                 return (-1);
 275         }
 276
 277         tp->timer.expires       = jiffies + 30*HZ;
 278         tp->timer.function      = tms380tr_timer_end_wait;
 279         tp->timer.data          = (unsigned long)dev;
 280         add_timer(&tp->timer);
 281
 282         printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n",
 283                dev->name, tms380tr_read_ptr(dev));
 284
 285         tms380tr_enable_interrupts(dev);
 286         tms380tr_open_adapter(dev);
 287
 288         netif_start_queue(dev);
 289
 290         /* Wait for interrupt from hardware. If interrupt does not come,
 291          * there will be a timeout from the timer.
 292          */
 293         tp->Sleeping = 1;
 294         interruptible_sleep_on(&tp->wait_for_tok_int);
 295         del_timer(&tp->timer);
 296
 297         /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
 298         if(tp->AdapterVirtOpenFlag == 0)
 299         {
 300                 tms380tr_disable_interrupts(dev);
 301                 return (-1);
 302         }
 303
 304         tp->StartTime = jiffies;
 305
 306         /* Start function control timer */
 307         tp->timer.expires       = jiffies + 2*HZ;
 308         tp->timer.function      = tms380tr_timer_chk;
 309         tp->timer.data          = (unsigned long)dev;
 310         add_timer(&tp->timer);
 311
 312         return (0);
 313 }
 314
 315 /*
 316  * Timeout function while waiting for event
 317  */
 318 static void tms380tr_timer_end_wait(unsigned long data)
 319 {
 320         struct net_device *dev = (struct net_device*)data;
 321         struct net_local *tp = netdev_priv(dev);
 322
 323         if(tp->Sleeping)
 324         {
 325                 tp->Sleeping = 0;
 326                 wake_up_interruptible(&tp->wait_for_tok_int);
 327         }
 328
 329         return;
 330 }
 331
 332 /*
 333  * Initialize the chipset
 334  */
 335 static int tms380tr_chipset_init(struct net_device *dev)
 336 {
 337         struct net_local *tp = netdev_priv(dev);
 338         int err;
 339
 340         tms380tr_init_ipb(tp);
 341         tms380tr_init_opb(dev);
 342         tms380tr_init_net_local(dev);
 343
 344         if(tms380tr_debug > 3)
 345                 printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name);
 346         err = tms380tr_reset_adapter(dev);
 347         if(err < 0)
 348                 return (-1);
 349
 350         if(tms380tr_debug > 3)
 351                 printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name);
 352         err = tms380tr_bringup_diags(dev);
 353         if(err < 0)
 354                 return (-1);
 355
 356         if(tms380tr_debug > 3)
 357                 printk(KERN_DEBUG "%s: Init adapter...\n", dev->name);
 358         err = tms380tr_init_adapter(dev);
 359         if(err < 0)
 360                 return (-1);
 361
 362         if(tms380tr_debug > 3)
 363                 printk(KERN_DEBUG "%s: Done!\n", dev->name);
 364         return (0);
 365 }
 366
 367 /*
 368  * Initializes the net_local structure.
 369  */
 370 static void tms380tr_init_net_local(struct net_device *dev)
 371 {
 372         struct net_local *tp = netdev_priv(dev);
 373         int i;
 374         dma_addr_t dmabuf;
 375
 376         tp->scb.CMD     = 0;
 377         tp->scb.Parm[0] = 0;
 378         tp->scb.Parm[1] = 0;
 379
 380         tp->ssb.STS     = 0;
 381         tp->ssb.Parm[0] = 0;
 382         tp->ssb.Parm[1] = 0;
 383         tp->ssb.Parm[2] = 0;
 384
 385         tp->CMDqueue    = 0;
 386
 387         tp->AdapterOpenFlag     = 0;
 388         tp->AdapterVirtOpenFlag = 0;
 389         tp->ScbInUse            = 0;
 390         tp->OpenCommandIssued   = 0;
 391         tp->ReOpenInProgress    = 0;
 392         tp->HaltInProgress      = 0;
 393         tp->TransmitHaltScheduled = 0;
 394         tp->LobeWireFaultLogged = 0;
 395         tp->LastOpenStatus      = 0;
 396         tp->MaxPacketSize       = DEFAULT_PACKET_SIZE;
 397
 398         /* Create circular chain of transmit lists */
 399         for (i = 0; i < TPL_NUM; i++)
 400         {
 401                 tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
 402                 tp->Tpl[i].Status       = 0;
 403                 tp->Tpl[i].FrameSize    = 0;
 404                 tp->Tpl[i].FragList[0].DataCount        = 0;
 405                 tp->Tpl[i].FragList[0].DataAddr         = 0;
 406                 tp->Tpl[i].NextTPLPtr   = &tp->Tpl[(i+1) % TPL_NUM];
 407                 tp->Tpl[i].MData        = NULL;
 408                 tp->Tpl[i].TPLIndex     = i;
 409                 tp->Tpl[i].DMABuff      = 0;
 410                 tp->Tpl[i].BusyFlag     = 0;
 411         }
 412
 413         tp->TplFree = tp->TplBusy = &tp->Tpl[0];
 414
 415         /* Create circular chain of receive lists */
 416         for (i = 0; i < RPL_NUM; i++)
 417         {
 418                 tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */
 419                 tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
 420                 tp->Rpl[i].FrameSize = 0;
 421                 tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
 422
 423                 /* Alloc skb and point adapter to data area */
 424                 tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
 425                         tp->Rpl[i].DMABuff = 0;
 426
 427                 /* skb == NULL ? then use local buffer */
 428                 if(tp->Rpl[i].Skb == NULL)
 429                 {
 430                         tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
 431                         tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
 432                         tp->Rpl[i].MData = tp->LocalRxBuffers[i];
 433                 }
 434                 else    /* SKB != NULL */
 435                 {
 436                         tp->Rpl[i].Skb->dev = dev;
 437                         skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
 438
 439                         /* data unreachable for DMA ? then use local buffer */
 440                         dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
 441                         if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
 442                         {
 443                                 tp->Rpl[i].SkbStat = SKB_DATA_COPY;
 444                                 tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer);
 445                                 tp->Rpl[i].MData = tp->LocalRxBuffers[i];
 446                         }
 447                         else    /* DMA directly in skb->data */
 448                         {
 449                                 tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
 450                                 tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf);
 451                                 tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
 452                                 tp->Rpl[i].DMABuff = dmabuf;
 453                         }
 454                 }
 455
 456                 tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
 457                 tp->Rpl[i].RPLIndex = i;
 458         }
 459
 460         tp->RplHead = &tp->Rpl[0];
 461         tp->RplTail = &tp->Rpl[RPL_NUM-1];
 462         tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
 463
 464         return;
 465 }
 466
 467 /*
 468  * Initializes the initialisation parameter block.
 469  */
 470 static void tms380tr_init_ipb(struct net_local *tp)
 471 {
 472         tp->ipb.Init_Options    = BURST_MODE;
 473         tp->ipb.CMD_Status_IV   = 0;
 474         tp->ipb.TX_IV           = 0;
 475         tp->ipb.RX_IV           = 0;
 476         tp->ipb.Ring_Status_IV  = 0;
 477         tp->ipb.SCB_Clear_IV    = 0;
 478         tp->ipb.Adapter_CHK_IV  = 0;
 479         tp->ipb.RX_Burst_Size   = BURST_SIZE;
 480         tp->ipb.TX_Burst_Size   = BURST_SIZE;
 481         tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
 482         tp->ipb.SCB_Addr        = 0;
 483         tp->ipb.SSB_Addr        = 0;
 484
 485         return;
 486 }
 487
 488 /*
 489  * Initializes the open parameter block.
 490  */
 491 static void tms380tr_init_opb(struct net_device *dev)
 492 {
 493         struct net_local *tp;
 494         unsigned long Addr;
 495         unsigned short RplSize    = RPL_SIZE;
 496         unsigned short TplSize    = TPL_SIZE;
 497         unsigned short BufferSize = BUFFER_SIZE;
 498         int i;
 499
 500         tp = netdev_priv(dev);
 501
 502         tp->ocpl.OPENOptions     = 0;
 503         tp->ocpl.OPENOptions    |= ENABLE_FULL_DUPLEX_SELECTION;
 504         tp->ocpl.FullDuplex      = 0;
 505         tp->ocpl.FullDuplex     |= OPEN_FULL_DUPLEX_OFF;
 506
 507         /*
 508          * Set node address
 509          *
 510          * We go ahead and put it in the OPB even though on
 511          * most of the generic adapters this isn't required.
 512          * Its simpler this way.  -- ASF
 513          */
 514         for (i=0;i<6;i++)
 515                 tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i];
 516
 517         tp->ocpl.GroupAddr       = 0;
 518         tp->ocpl.FunctAddr       = 0;
 519         tp->ocpl.RxListSize      = cpu_to_be16((unsigned short)RplSize);
 520         tp->ocpl.TxListSize      = cpu_to_be16((unsigned short)TplSize);
 521         tp->ocpl.BufSize         = cpu_to_be16((unsigned short)BufferSize);
 522         tp->ocpl.Reserved        = 0;
 523         tp->ocpl.TXBufMin        = TX_BUF_MIN;
 524         tp->ocpl.TXBufMax        = TX_BUF_MAX;
 525
 526         Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer);
 527
 528         tp->ocpl.ProdIDAddr[0]   = LOWORD(Addr);
 529         tp->ocpl.ProdIDAddr[1]   = HIWORD(Addr);
 530
 531         return;
 532 }
 533
 534 /*
 535  * Send OPEN command to adapter
 536  */
 537 static void tms380tr_open_adapter(struct net_device *dev)
 538 {
 539         struct net_local *tp = netdev_priv(dev);
 540
 541         if(tp->OpenCommandIssued)
 542                 return;
 543
 544         tp->OpenCommandIssued = 1;
 545         tms380tr_exec_cmd(dev, OC_OPEN);
 546
 547         return;
 548 }
 549
 550 /*
 551  * Clear the adapter's interrupt flag. Clear system interrupt enable
 552  * (SINTEN): disable adapter to system interrupts.
 553  */
 554 static void tms380tr_disable_interrupts(struct net_device *dev)
 555 {
 556         SIFWRITEB(0, SIFACL);
 557
 558         return;
 559 }
 560
 561 /*
 562  * Set the adapter's interrupt flag. Set system interrupt enable
 563  * (SINTEN): enable adapter to system interrupts.
 564  */
 565 static void tms380tr_enable_interrupts(struct net_device *dev)
 566 {
 567         SIFWRITEB(ACL_SINTEN, SIFACL);
 568
 569         return;
 570 }
 571
 572 /*
 573  * Put command in command queue, try to execute it.
 574  */
 575 static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command)
 576 {
 577         struct net_local *tp = netdev_priv(dev);
 578
 579         tp->CMDqueue |= Command;
 580         tms380tr_chk_outstanding_cmds(dev);
 581
 582         return;
 583 }
 584
 585 static void tms380tr_timeout(struct net_device *dev)
 586 {
 587         /*
 588          * If we get here, some higher level has decided we are broken.
 589          * There should really be a "kick me" function call instead.
 590          *
 591          * Resetting the token ring adapter takes a long time so just
 592          * fake transmission time and go on trying. Our own timeout
 593          * routine is in tms380tr_timer_chk()
 594          */
 595         dev->trans_start = jiffies;
 596         netif_wake_queue(dev);
 597 }
 598
 599 /*
 600  * Gets skb from system, queues it and checks if it can be sent
 601  */
 602 static netdev_tx_t tms380tr_send_packet(struct sk_buff *skb,
 603                                               struct net_device *dev)
 604 {
 605         struct net_local *tp = netdev_priv(dev);
 606         netdev_tx_t rc;
 607
 608         rc = tms380tr_hardware_send_packet(skb, dev);
 609         if(tp->TplFree->NextTPLPtr->BusyFlag)
 610                 netif_stop_queue(dev);
 611         return rc;
 612 }
 613
 614 /*
 615  * Move frames into adapter tx queue
 616  */
 617 static netdev_tx_t tms380tr_hardware_send_packet(struct sk_buff *skb,
 618                                                        struct net_device *dev)
 619 {
 620         TPL *tpl;
 621         short length;
 622         unsigned char *buf;
 623         unsigned long flags;
 624         int i;
 625         dma_addr_t dmabuf, newbuf;
 626         struct net_local *tp = netdev_priv(dev);
 627
 628         /* Try to get a free TPL from the chain.
 629          *
 630          * NOTE: We *must* always leave one unused TPL in the chain,
 631          * because otherwise the adapter might send frames twice.
 632          */
 633         spin_lock_irqsave(&tp->lock, flags);
 634         if(tp->TplFree->NextTPLPtr->BusyFlag)  { /* No free TPL */
 635                 if (tms380tr_debug > 0)
 636                         printk(KERN_DEBUG "%s: No free TPL\n", dev->name);
 637                 spin_unlock_irqrestore(&tp->lock, flags);
 638                 return NETDEV_TX_BUSY;
 639         }
 640
 641         dmabuf = 0;
 642
 643         /* Is buffer reachable for Busmaster-DMA? */
 644
 645         length  = skb->len;
 646         dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE);
 647         if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) {
 648                 /* Copy frame to local buffer */
 649                 dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE);
 650                 dmabuf  = 0;
 651                 i       = tp->TplFree->TPLIndex;
 652                 buf     = tp->LocalTxBuffers[i];
 653                 skb_copy_from_linear_data(skb, buf, length);
 654                 newbuf  = ((char *)buf - (char *)tp) + tp->dmabuffer;
 655         }
 656         else {
 657                 /* Send direct from skb->data */
 658                 newbuf  = dmabuf;
 659                 buf     = skb->data;
 660         }
 661         /* Source address in packet? */
 662         tms380tr_chk_src_addr(buf, dev->dev_addr);
 663         tp->LastSendTime        = jiffies;
 664         tpl                     = tp->TplFree;  /* Get the "free" TPL */
 665         tpl->BusyFlag           = 1;            /* Mark TPL as busy */
 666         tp->TplFree             = tpl->NextTPLPtr;
 667
 668         /* Save the skb for delayed return of skb to system */
 669         tpl->Skb = skb;
 670         tpl->DMABuff = dmabuf;
 671         tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length);
 672         tpl->FragList[0].DataAddr  = htonl(newbuf);
 673
 674         /* Write the data length in the transmit list. */
 675         tpl->FrameSize  = cpu_to_be16((unsigned short)length);
 676         tpl->MData      = buf;
 677
 678         /* Transmit the frame and set the status values. */
 679         tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
 680                                 | TX_END_FRAME | TX_PASS_SRC_ADDR
 681                                 | TX_FRAME_IRQ);
 682
 683         /* Let adapter send the frame. */
 684         tms380tr_exec_sifcmd(dev, CMD_TX_VALID);
 685         spin_unlock_irqrestore(&tp->lock, flags);
 686
 687         return NETDEV_TX_OK;
 688 }
 689
 690 /*
 691  * Write the given value to the 'Status' field of the specified TPL.
 692  * NOTE: This function should be used whenever the status of any TPL must be
 693  * modified by the driver, because the compiler may otherwise change the
 694  * order of instructions such that writing the TPL status may be executed at
 695  * an undesirable time. When this function is used, the status is always
 696  * written when the function is called.
 697  */
 698 static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status)
 699 {
 700         tpl->Status = Status;
 701 }
 702
 703 static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
 704 {
 705         unsigned char SRBit;
 706
 707         if((((unsigned long)frame[8]) & ~0x80) != 0)    /* Compare 4 bytes */
 708                 return;
 709         if((unsigned short)frame[12] != 0)              /* Compare 2 bytes */
 710                 return;
 711
 712         SRBit = frame[8] & 0x80;
 713         memcpy(&frame[8], hw_addr, 6);
 714         frame[8] |= SRBit;
 715
 716         return;
 717 }
 718
 719 /*
 720  * The timer routine: Check if adapter still open and working, reopen if not.
 721  */
 722 static void tms380tr_timer_chk(unsigned long data)
 723 {
 724         struct net_device *dev = (struct net_device*)data;
 725         struct net_local *tp = netdev_priv(dev);
 726
 727         if(tp->HaltInProgress)
 728                 return;
 729
 730         tms380tr_chk_outstanding_cmds(dev);
 731         if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies) &&
 732            (tp->TplFree != tp->TplBusy))
 733         {
 734                 /* Anything to send, but stalled too long */
 735                 tp->LastSendTime = jiffies;
 736                 tms380tr_exec_cmd(dev, OC_CLOSE);       /* Does reopen automatically */
 737         }
 738
 739         tp->timer.expires = jiffies + 2*HZ;
 740         add_timer(&tp->timer);
 741
 742         if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
 743                 return;
 744         tp->ReOpenInProgress = 1;
 745         tms380tr_open_adapter(dev);
 746
 747         return;
 748 }
 749
 750 /*
 751  * The typical workload of the driver: Handle the network interface interrupts.
 752  */
 753 irqreturn_t tms380tr_interrupt(int irq, void *dev_id)
 754 {
 755         struct net_device *dev = dev_id;
 756         struct net_local *tp;
 757         unsigned short irq_type;
 758         int handled = 0;
 759
 760         tp = netdev_priv(dev);
 761
 762         irq_type = SIFREADW(SIFSTS);
 763
 764         while(irq_type & STS_SYSTEM_IRQ) {
 765                 handled = 1;
 766                 irq_type &= STS_IRQ_MASK;
 767
 768                 if(!tms380tr_chk_ssb(tp, irq_type)) {
 769                         printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name);
 770                         break;
 771                 }
 772
 773                 switch(irq_type) {
 774                 case STS_IRQ_RECEIVE_STATUS:
 775                         tms380tr_reset_interrupt(dev);
 776                         tms380tr_rcv_status_irq(dev);
 777                         break;
 778
 779                 case STS_IRQ_TRANSMIT_STATUS:
 780                         /* Check if TRANSMIT.HALT command is complete */
 781                         if(tp->ssb.Parm[0] & COMMAND_COMPLETE) {
 782                                 tp->TransmitCommandActive = 0;
 783                                         tp->TransmitHaltScheduled = 0;
 784
 785                                         /* Issue a new transmit command. */
 786                                         tms380tr_exec_cmd(dev, OC_TRANSMIT);
 787                                 }
 788
 789                                 tms380tr_reset_interrupt(dev);
 790                                 tms380tr_tx_status_irq(dev);
 791                                 break;
 792
 793                 case STS_IRQ_COMMAND_STATUS:
 794                         /* The SSB contains status of last command
 795                          * other than receive/transmit.
 796                          */
 797                         tms380tr_cmd_status_irq(dev);
 798                         break;
 799
 800                 case STS_IRQ_SCB_CLEAR:
 801                         /* The SCB is free for another command. */
 802                         tp->ScbInUse = 0;
 803                         tms380tr_chk_outstanding_cmds(dev);
 804                         break;
 805
 806                 case STS_IRQ_RING_STATUS:
 807                         tms380tr_ring_status_irq(dev);
 808                         break;
 809
 810                 case STS_IRQ_ADAPTER_CHECK:
 811                         tms380tr_chk_irq(dev);
 812                         break;
 813
 814                 case STS_IRQ_LLC_STATUS:
 815                         printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n");
 816                         break;
 817
 818                 case STS_IRQ_TIMER:
 819                         printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n");
 820                         break;
 821
 822                 case STS_IRQ_RECEIVE_PENDING:
 823                         printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n");
 824                         break;
 825
 826                 default:
 827                         printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type);
 828                         break;
 829                 }
 830
 831                 /* Reset system interrupt if not already done. */
 832                 if(irq_type != STS_IRQ_TRANSMIT_STATUS &&
 833                    irq_type != STS_IRQ_RECEIVE_STATUS) {
 834                         tms380tr_reset_interrupt(dev);
 835                 }
 836
 837                 irq_type = SIFREADW(SIFSTS);
 838         }
 839
 840         return IRQ_RETVAL(handled);
 841 }
 842
 843 /*
 844  *  Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
 845  */
 846 static void tms380tr_reset_interrupt(struct net_device *dev)
 847 {
 848         struct net_local *tp = netdev_priv(dev);
 849         SSB *ssb = &tp->ssb;
 850
 851         /*
 852          * [Workaround for "Data Late"]
 853          * Set all fields of the SSB to well-defined values so we can
 854          * check if the adapter has written the SSB.
 855          */
 856
 857         ssb->STS        = (unsigned short) -1;
 858         ssb->Parm[0]    = (unsigned short) -1;
 859         ssb->Parm[1]    = (unsigned short) -1;
 860         ssb->Parm[2]    = (unsigned short) -1;
 861
 862         /* Free SSB by issuing SSB_CLEAR command after reading IRQ code
 863          * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
 864          */
 865         tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
 866
 867         return;
 868 }
 869
 870 /*
 871  * Check if the SSB has actually been written by the adapter.
 872  */
 873 static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType)
 874 {
 875         SSB *ssb = &tp->ssb;    /* The address of the SSB. */
 876
 877         /* C 0 1 2 INTERRUPT CODE
 878          * - - - - --------------
 879          * 1 1 1 1 TRANSMIT STATUS
 880          * 1 1 1 1 RECEIVE STATUS
 881          * 1 ? ? 0 COMMAND STATUS
 882          * 0 0 0 0 SCB CLEAR
 883          * 1 1 0 0 RING STATUS
 884          * 0 0 0 0 ADAPTER CHECK
 885          *
 886          * 0 = SSB field not affected by interrupt
 887          * 1 = SSB field is affected by interrupt
 888          *
 889          * C = SSB ADDRESS +0: COMMAND
 890          * 0 = SSB ADDRESS +2: STATUS 0
 891          * 1 = SSB ADDRESS +4: STATUS 1
 892          * 2 = SSB ADDRESS +6: STATUS 2
 893          */
 894
 895         /* Check if this interrupt does use the SSB. */
 896
 897         if(IrqType != STS_IRQ_TRANSMIT_STATUS &&
 898            IrqType != STS_IRQ_RECEIVE_STATUS &&
 899            IrqType != STS_IRQ_COMMAND_STATUS &&
 900            IrqType != STS_IRQ_RING_STATUS)
 901         {
 902                 return (1);     /* SSB not involved. */
 903         }
 904
 905         /* Note: All fields of the SSB have been set to all ones (-1) after it
 906          * has last been used by the software (see DriverIsr()).
 907          *
 908          * Check if the affected SSB fields are still unchanged.
 909          */
 910
 911         if(ssb->STS == (unsigned short) -1)
 912                 return (0);     /* Command field not yet available. */
 913         if(IrqType == STS_IRQ_COMMAND_STATUS)
 914                 return (1);     /* Status fields not always affected. */
 915         if(ssb->Parm[0] == (unsigned short) -1)
 916                 return (0);     /* Status 1 field not yet available. */
 917         if(IrqType == STS_IRQ_RING_STATUS)
 918                 return (1);     /* Status 2 & 3 fields not affected. */
 919
 920         /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
 921         if(ssb->Parm[1] == (unsigned short) -1)
 922                 return (0);     /* Status 2 field not yet available. */
 923         if(ssb->Parm[2] == (unsigned short) -1)
 924                 return (0);     /* Status 3 field not yet available. */
 925
 926         return (1);     /* All SSB fields have been written by the adapter. */
 927 }
 928
 929 /*
 930  * Evaluates the command results status in the SSB status field.
 931  */
 932 static void tms380tr_cmd_status_irq(struct net_device *dev)
 933 {
 934         struct net_local *tp = netdev_priv(dev);
 935         unsigned short ssb_cmd, ssb_parm_0;
 936         unsigned short ssb_parm_1;
 937         char *open_err = "Open error -";
 938         char *code_err = "Open code -";
 939
 940         /* Copy the ssb values to local variables */
 941         ssb_cmd    = tp->ssb.STS;
 942         ssb_parm_0 = tp->ssb.Parm[0];
 943         ssb_parm_1 = tp->ssb.Parm[1];
 944
 945         if(ssb_cmd == OPEN)
 946         {
 947                 tp->Sleeping = 0;
 948                 if(!tp->ReOpenInProgress)
 949                         wake_up_interruptible(&tp->wait_for_tok_int);
 950
 951                 tp->OpenCommandIssued = 0;
 952                 tp->ScbInUse = 0;
 953
 954                 if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
 955                 {
 956                         /* Success, the adapter is open. */
 957                         tp->LobeWireFaultLogged = 0;
 958                         tp->AdapterOpenFlag     = 1;
 959                         tp->AdapterVirtOpenFlag = 1;
 960                         tp->TransmitCommandActive = 0;
 961                         tms380tr_exec_cmd(dev, OC_TRANSMIT);
 962                         tms380tr_exec_cmd(dev, OC_RECEIVE);
 963
 964                         if(tp->ReOpenInProgress)
 965                                 tp->ReOpenInProgress = 0;
 966
 967                         return;
 968                 }
 969                 else    /* The adapter did not open. */
 970                 {
 971                         if(ssb_parm_0 & NODE_ADDR_ERROR)
 972                                 printk(KERN_INFO "%s: Node address error\n",
 973                                         dev->name);
 974                         if(ssb_parm_0 & LIST_SIZE_ERROR)
 975                                 printk(KERN_INFO "%s: List size error\n",
 976                                         dev->name);
 977                         if(ssb_parm_0 & BUF_SIZE_ERROR)
 978                                 printk(KERN_INFO "%s: Buffer size error\n",
 979                                         dev->name);
 980                         if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
 981                                 printk(KERN_INFO "%s: Tx buffer count error\n",
 982                                         dev->name);
 983                         if(ssb_parm_0 & INVALID_OPEN_OPTION)
 984                                 printk(KERN_INFO "%s: Invalid open option\n",
 985                                         dev->name);
 986                         if(ssb_parm_0 & OPEN_ERROR)
 987                         {
 988                                 /* Show the open phase. */
 989                                 switch(ssb_parm_0 & OPEN_PHASES_MASK)
 990                                 {
 991                                         case LOBE_MEDIA_TEST:
 992                                                 if(!tp->LobeWireFaultLogged)
 993                                                 {
 994                                                         tp->LobeWireFaultLogged = 1;
 995                                                         printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
 996                                                 }
 997                                                 tp->ReOpenInProgress    = 1;
 998                                                 tp->AdapterOpenFlag     = 0;
 999                                                 tp->AdapterVirtOpenFlag = 1;
1000                                                 tms380tr_open_adapter(dev);
1001                                                 return;
1002
1003                                         case PHYSICAL_INSERTION:
1004                                                 printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
1005                                                 break;
1006
1007                                         case ADDRESS_VERIFICATION:
1008                                                 printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
1009                                                 break;
1010
1011                                         case PARTICIPATION_IN_RING_POLL:
1012                                                 printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
1013                                                 break;
1014
1015                                         case REQUEST_INITIALISATION:
1016                                                 printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
1017                                                 break;
1018
1019                                         case FULLDUPLEX_CHECK:
1020                                                 printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
1021                                                 break;
1022
1023                                         default:
1024                                                 printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
1025                                                 break;
1026                                 }
1027
1028                                 /* Show the open errors. */
1029                                 switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
1030                                 {
1031                                         case OPEN_FUNCTION_FAILURE:
1032                                                 printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
1033                                                 tp->LastOpenStatus =
1034                                                         OPEN_FUNCTION_FAILURE;
1035                                                 break;
1036
1037                                         case OPEN_SIGNAL_LOSS:
1038                                                 printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
1039                                                 tp->LastOpenStatus =
1040                                                         OPEN_SIGNAL_LOSS;
1041                                                 break;
1042
1043                                         case OPEN_TIMEOUT:
1044                                                 printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
1045                                                 tp->LastOpenStatus =
1046                                                         OPEN_TIMEOUT;
1047                                                 break;
1048
1049                                         case OPEN_RING_FAILURE:
1050                                                 printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
1051                                                 tp->LastOpenStatus =
1052                                                         OPEN_RING_FAILURE;
1053                                                 break;
1054
1055                                         case OPEN_RING_BEACONING:
1056                                                 printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
1057                                                 tp->LastOpenStatus =
1058                                                         OPEN_RING_BEACONING;
1059                                                 break;
1060
1061                                         case OPEN_DUPLICATE_NODEADDR:
1062                                                 printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
1063                                                 tp->LastOpenStatus =
1064                                                         OPEN_DUPLICATE_NODEADDR;
1065                                                 break;
1066
1067                                         case OPEN_REQUEST_INIT:
1068                                                 printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
1069                                                 tp->LastOpenStatus =
1070                                                         OPEN_REQUEST_INIT;
1071                                                 break;
1072
1073                                         case OPEN_REMOVE_RECEIVED:
1074                                                 printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
1075                                                 tp->LastOpenStatus =
1076                                                         OPEN_REMOVE_RECEIVED;
1077                                                 break;
1078
1079                                         case OPEN_FULLDUPLEX_SET:
1080                                                 printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
1081                                                 tp->LastOpenStatus =
1082                                                         OPEN_FULLDUPLEX_SET;
1083                                                 break;
1084
1085                                         default:
1086                                                 printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
1087                                                 tp->LastOpenStatus =
1088                                                         OPEN_FUNCTION_FAILURE;
1089                                                 break;
1090                                 }
1091                         }
1092
1093                         tp->AdapterOpenFlag     = 0;
1094                         tp->AdapterVirtOpenFlag = 0;
1095
1096                         return;
1097                 }
1098         }
1099         else
1100         {
1101                 if(ssb_cmd != READ_ERROR_LOG)
1102                         return;
1103
1104                 /* Add values from the error log table to the MAC
1105                  * statistics counters and update the errorlogtable
1106                  * memory.
1107                  */
1108                 tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
1109                 tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
1110                 tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
1111                 tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
1112                 tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
1113                 tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
1114                 tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
1115                 tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
1116                 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
1117                 tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
1118                 tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
1119                 tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
1120                 tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
1121         }
1122
1123         return;
1124 }
1125
1126 /*
1127  * The inverse routine to tms380tr_open().
1128  */
1129 int tms380tr_close(struct net_device *dev)
1130 {
1131         struct net_local *tp = netdev_priv(dev);
1132         netif_stop_queue(dev);
1133
1134         del_timer(&tp->timer);
1135
1136         /* Flush the Tx and disable Rx here. */
1137
1138         tp->HaltInProgress      = 1;
1139         tms380tr_exec_cmd(dev, OC_CLOSE);
1140         tp->timer.expires       = jiffies + 1*HZ;
1141         tp->timer.function      = tms380tr_timer_end_wait;
1142         tp->timer.data          = (unsigned long)dev;
1143         add_timer(&tp->timer);
1144
1145         tms380tr_enable_interrupts(dev);
1146
1147         tp->Sleeping = 1;
1148         interruptible_sleep_on(&tp->wait_for_tok_int);
1149         tp->TransmitCommandActive = 0;
1150
1151         del_timer(&tp->timer);
1152         tms380tr_disable_interrupts(dev);
1153
1154 #ifdef CONFIG_ISA
1155         if(dev->dma > 0)
1156         {
1157                 unsigned long flags=claim_dma_lock();
1158                 disable_dma(dev->dma);
1159                 release_dma_lock(flags);
1160         }
1161 #endif
1162
1163         SIFWRITEW(0xFF00, SIFCMD);
1164 #if 0
1165         if(dev->dma > 0) /* what the? */
1166                 SIFWRITEB(0xff, POSREG);
1167 #endif
1168         tms380tr_cancel_tx_queue(tp);
1169
1170         return (0);
1171 }
1172
1173 /*
1174  * Get the current statistics. This may be called with the card open
1175  * or closed.
1176  */
1177 static struct net_device_stats *tms380tr_get_stats(struct net_device *dev)
1178 {
1179         struct net_local *tp = netdev_priv(dev);
1180
1181         return ((struct net_device_stats *)&tp->MacStat);
1182 }
1183
1184 /*
1185  * Set or clear the multicast filter for this adapter.
1186  */
1187 static void tms380tr_set_multicast_list(struct net_device *dev)
1188 {
1189         struct net_local *tp = netdev_priv(dev);
1190         unsigned int OpenOptions;
1191
1192         OpenOptions = tp->ocpl.OPENOptions &
1193                 ~(PASS_ADAPTER_MAC_FRAMES
1194                   | PASS_ATTENTION_FRAMES
1195                   | PASS_BEACON_MAC_FRAMES
1196                   | COPY_ALL_MAC_FRAMES
1197                   | COPY_ALL_NON_MAC_FRAMES);
1198
1199         tp->ocpl.FunctAddr = 0;
1200
1201         if(dev->flags & IFF_PROMISC)
1202                 /* Enable promiscuous mode */
1203                 OpenOptions |= COPY_ALL_NON_MAC_FRAMES |
1204                         COPY_ALL_MAC_FRAMES;
1205         else
1206         {
1207                 if(dev->flags & IFF_ALLMULTI)
1208                 {
1209                         /* Disable promiscuous mode, use normal mode. */
1210                         tp->ocpl.FunctAddr = 0xFFFFFFFF;
1211                 }
1212                 else
1213                 {
1214                         struct dev_mc_list *mclist;
1215
1216                         netdev_for_each_mc_addr(mclist, dev) {
1217                                 ((char *)(&tp->ocpl.FunctAddr))[0] |=
1218                                         mclist->dmi_addr[2];
1219                                 ((char *)(&tp->ocpl.FunctAddr))[1] |=
1220                                         mclist->dmi_addr[3];
1221                                 ((char *)(&tp->ocpl.FunctAddr))[2] |=
1222                                         mclist->dmi_addr[4];
1223                                 ((char *)(&tp->ocpl.FunctAddr))[3] |=
1224                                         mclist->dmi_addr[5];
1225                         }
1226                 }
1227                 tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR);
1228         }
1229
1230         tp->ocpl.OPENOptions = OpenOptions;
1231         tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
1232         return;
1233 }
1234
1235 /*
1236  * Wait for some time (microseconds)
1237  */
1238 void tms380tr_wait(unsigned long time)
1239 {
1240 #if 0
1241         long tmp;
1242
1243         tmp = jiffies + time/(1000000/HZ);
1244         do {
1245                 tmp = schedule_timeout_interruptible(tmp);
1246         } while(time_after(tmp, jiffies));
1247 #else
1248         udelay(time);
1249 #endif
1250         return;
1251 }
1252
1253 /*
1254  * Write a command value to the SIFCMD register
1255  */
1256 static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
1257 {
1258         unsigned short cmd;
1259         unsigned short SifStsValue;
1260         unsigned long loop_counter;
1261
1262         WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
1263         cmd = (unsigned short)WriteValue;
1264         loop_counter = 0,5 * 800000;
1265         do {
1266                 SifStsValue = SIFREADW(SIFSTS);
1267         } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
1268         SIFWRITEW(cmd, SIFCMD);
1269
1270         return;
1271 }
1272
1273 /*
1274  * Processes adapter hardware reset, halts adapter and downloads firmware,
1275  * clears the halt bit.
1276  */
1277 static int tms380tr_reset_adapter(struct net_device *dev)
1278 {
1279         struct net_local *tp = netdev_priv(dev);
1280         unsigned short *fw_ptr;
1281         unsigned short count, c, count2;
1282         const struct firmware *fw_entry = NULL;
1283
1284         if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) {
1285                 printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n",
1286                         dev->name, "tms380tr.bin");
1287                 return (-1);
1288         }
1289
1290         fw_ptr = (unsigned short *)fw_entry->data;
1291         count2 = fw_entry->size / 2;
1292
1293         /* Hardware adapter reset */
1294         SIFWRITEW(ACL_ARESET, SIFACL);
1295         tms380tr_wait(40);
1296
1297         c = SIFREADW(SIFACL);
1298         tms380tr_wait(20);
1299
1300         if(dev->dma == 0)       /* For PCI adapters */
1301         {
1302                 c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1);    /* Clear bits */
1303                 if(tp->setnselout)
1304                   c |= (*tp->setnselout)(dev);
1305         }
1306
1307         /* In case a command is pending - forget it */
1308         tp->ScbInUse = 0;
1309
1310         c &= ~ACL_ARESET;               /* Clear adapter reset bit */
1311         c |=  ACL_CPHALT;               /* Halt adapter CPU, allow download */
1312         c |= ACL_BOOT;
1313         c |= ACL_SINTEN;
1314         c &= ~ACL_PSDMAEN;              /* Clear pseudo dma bit */
1315         SIFWRITEW(c, SIFACL);
1316         tms380tr_wait(40);
1317
1318         count = 0;
1319         /* Download firmware via DIO interface: */
1320         do {
1321                 if (count2 < 3) continue;
1322
1323                 /* Download first address part */
1324                 SIFWRITEW(*fw_ptr, SIFADX);
1325                 fw_ptr++;
1326                 count2--;
1327                 /* Download second address part */
1328                 SIFWRITEW(*fw_ptr, SIFADD);
1329                 fw_ptr++;
1330                 count2--;
1331
1332                 if((count = *fw_ptr) != 0)      /* Load loop counter */
1333                 {
1334                         fw_ptr++;       /* Download block data */
1335                         count2--;
1336                         if (count > count2) continue;
1337
1338                         for(; count > 0; count--)
1339                         {
1340                                 SIFWRITEW(*fw_ptr, SIFINC);
1341                                 fw_ptr++;
1342                                 count2--;
1343                         }
1344                 }
1345                 else    /* Stop, if last block downloaded */
1346                 {
1347                         c = SIFREADW(SIFACL);
1348                         c &= (~ACL_CPHALT | ACL_SINTEN);
1349
1350                         /* Clear CPHALT and start BUD */
1351                         SIFWRITEW(c, SIFACL);
1352                         if (fw_entry)
1353                                 release_firmware(fw_entry);
1354                         return (1);
1355                 }
1356         } while(count == 0);
1357
1358         if (fw_entry)
1359                 release_firmware(fw_entry);
1360         printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name);
1361         return (-1);
1362 }
1363
1364 MODULE_FIRMWARE("tms380tr.bin");
1365
1366 /*
1367  * Starts bring up diagnostics of token ring adapter and evaluates
1368  * diagnostic results.
1369  */
1370 static int tms380tr_bringup_diags(struct net_device *dev)
1371 {
1372         int loop_cnt, retry_cnt;
1373         unsigned short Status;
1374
1375         tms380tr_wait(HALF_SECOND);
1376         tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1377         tms380tr_wait(HALF_SECOND);
1378
1379         retry_cnt = BUD_MAX_RETRIES;    /* maximal number of retrys */
1380
1381         do {
1382                 retry_cnt--;
1383                 if(tms380tr_debug > 3)
1384                         printk(KERN_DEBUG "BUD-Status: ");
1385                 loop_cnt = BUD_MAX_LOOPCNT;     /* maximum: three seconds*/
1386                 do {                    /* Inspect BUD results */
1387                         loop_cnt--;
1388                         tms380tr_wait(HALF_SECOND);
1389                         Status = SIFREADW(SIFSTS);
1390                         Status &= STS_MASK;
1391
1392                         if(tms380tr_debug > 3)
1393                                 printk(KERN_DEBUG " %04X \n", Status);
1394                         /* BUD successfully completed */
1395                         if(Status == STS_INITIALIZE)
1396                                 return (1);
1397                 /* Unrecoverable hardware error, BUD not completed? */
1398                 } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
1399                         != (STS_ERROR | STS_TEST)));
1400
1401                 /* Error preventing completion of BUD */
1402                 if(retry_cnt > 0)
1403                 {
1404                         printk(KERN_INFO "%s: Adapter Software Reset.\n",
1405                                 dev->name);
1406                         tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1407                         tms380tr_wait(HALF_SECOND);
1408                 }
1409         } while(retry_cnt > 0);
1410
1411         Status = SIFREADW(SIFSTS);
1412
1413         printk(KERN_INFO "%s: Hardware error\n", dev->name);
1414         /* Hardware error occurred! */
1415         Status &= 0x001f;
1416         if (Status & 0x0010)
1417                 printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name);
1418         else if ((Status & 0x000f) > 6)
1419                 printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name);
1420         else
1421                 printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f);
1422
1423         return (-1);
1424 }
1425
1426 /*
1427  * Copy initialisation data to adapter memory, beginning at address
1428  * 1:0A00; Starting DMA test and evaluating result bits.
1429  */
1430 static int tms380tr_init_adapter(struct net_device *dev)
1431 {
1432         struct net_local *tp = netdev_priv(dev);
1433
1434         const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
1435         const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
1436                                                 0xC5, 0xD9, 0xC3, 0xD4};
1437         void *ptr = (void *)&tp->ipb;
1438         unsigned short *ipb_ptr = (unsigned short *)ptr;
1439         unsigned char *cb_ptr = (unsigned char *) &tp->scb;
1440         unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
1441         unsigned short Status;
1442         int i, loop_cnt, retry_cnt;
1443
1444         /* Normalize: byte order low/high, word order high/low! (only IPB!) */
1445         tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer);
1446         tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer);
1447
1448         if(tms380tr_debug > 3)
1449         {
1450                 printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb);
1451                 printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer);
1452                 printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer);
1453                 printk(KERN_DEBUG "%s: buffer (tp)  : %lx\n", dev->name, (long) tp);
1454         }
1455         /* Maximum: three initialization retries */
1456         retry_cnt = INIT_MAX_RETRIES;
1457
1458         do {
1459                 retry_cnt--;
1460
1461                 /* Transfer initialization block */
1462                 SIFWRITEW(0x0001, SIFADX);
1463
1464                 /* To address 0001:0A00 of adapter RAM */
1465                 SIFWRITEW(0x0A00, SIFADD);
1466
1467                 /* Write 11 words to adapter RAM */
1468                 for(i = 0; i < 11; i++)
1469                         SIFWRITEW(ipb_ptr[i], SIFINC);
1470
1471                 /* Execute SCB adapter command */
1472                 tms380tr_exec_sifcmd(dev, CMD_EXECUTE);
1473
1474                 loop_cnt = INIT_MAX_LOOPCNT;    /* Maximum: 11 seconds */
1475
1476                 /* While remaining retries, no error and not completed */
1477                 do {
1478                         Status = 0;
1479                         loop_cnt--;
1480                         tms380tr_wait(HALF_SECOND);
1481
1482                         /* Mask interesting status bits */
1483                         Status = SIFREADW(SIFSTS);
1484                         Status &= STS_MASK;
1485                 } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0) &&
1486                         ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
1487
1488                 if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
1489                 {
1490                         /* Initialization completed without error */
1491                         i = 0;
1492                         do {    /* Test if contents of SCB is valid */
1493                                 if(SCB_Test[i] != *(cb_ptr + i))
1494                                 {
1495                                         printk(KERN_INFO "%s: DMA failed\n", dev->name);
1496                                         /* DMA data error: wrong data in SCB */
1497                                         return (-1);
1498                                 }
1499                                 i++;
1500                         } while(i < 6);
1501
1502                         i = 0;
1503                         do {    /* Test if contents of SSB is valid */
1504                                 if(SSB_Test[i] != *(sb_ptr + i))
1505                                         /* DMA data error: wrong data in SSB */
1506                                         return (-1);
1507                                 i++;
1508                         } while (i < 8);
1509
1510                         return (1);     /* Adapter successfully initialized */
1511                 }
1512                 else
1513                 {
1514                         if((Status & STS_ERROR) != 0)
1515                         {
1516                                 /* Initialization error occurred */
1517                                 Status = SIFREADW(SIFSTS);
1518                                 Status &= STS_ERROR_MASK;
1519                                 /* ShowInitialisationErrorCode(Status); */
1520                                 printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status);
1521                                 return (-1); /* Unrecoverable error */
1522                         }
1523                         else
1524                         {
1525                                 if(retry_cnt > 0)
1526                                 {
1527                                         /* Reset adapter and try init again */
1528                                         tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET);
1529                                         tms380tr_wait(HALF_SECOND);
1530                                 }
1531                         }
1532                 }
1533         } while(retry_cnt > 0);
1534
1535         printk(KERN_INFO "%s: Retry exceeded\n", dev->name);
1536         return (-1);
1537 }
1538
1539 /*
1540  * Check for outstanding commands in command queue and tries to execute
1541  * command immediately. Corresponding command flag in command queue is cleared.
1542  */
1543 static void tms380tr_chk_outstanding_cmds(struct net_device *dev)
1544 {
1545         struct net_local *tp = netdev_priv(dev);
1546         unsigned long Addr = 0;
1547
1548         if(tp->CMDqueue == 0)
1549                 return;         /* No command execution */
1550
1551         /* If SCB in use: no command */
1552         if(tp->ScbInUse == 1)
1553                 return;
1554
1555         /* Check if adapter is opened, avoiding COMMAND_REJECT
1556          * interrupt by the adapter!
1557          */
1558         if(tp->AdapterOpenFlag == 0)
1559         {
1560                 if(tp->CMDqueue & OC_OPEN)
1561                 {
1562                         /* Execute OPEN command */
1563                         tp->CMDqueue ^= OC_OPEN;
1564
1565                         Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer);
1566                         tp->scb.Parm[0] = LOWORD(Addr);
1567                         tp->scb.Parm[1] = HIWORD(Addr);
1568                         tp->scb.CMD = OPEN;
1569                 }
1570                 else
1571                         /* No OPEN command queued, but adapter closed. Note:
1572                          * We'll try to re-open the adapter in DriverPoll()
1573                          */
1574                         return;         /* No adapter command issued */
1575         }
1576         else
1577         {
1578                 /* Adapter is open; evaluate command queue: try to execute
1579                  * outstanding commands (depending on priority!) CLOSE
1580                  * command queued
1581                  */
1582                 if(tp->CMDqueue & OC_CLOSE)
1583                 {
1584                         tp->CMDqueue ^= OC_CLOSE;
1585                         tp->AdapterOpenFlag = 0;
1586                         tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
1587                         tp->scb.Parm[1] = 0; /* but should be set to zero! */
1588                         tp->scb.CMD = CLOSE;
1589                         if(!tp->HaltInProgress)
1590                                 tp->CMDqueue |= OC_OPEN; /* re-open adapter */
1591                         else
1592                                 tp->CMDqueue = 0;       /* no more commands */
1593                 }
1594                 else
1595                 {
1596                         if(tp->CMDqueue & OC_RECEIVE)
1597                         {
1598                                 tp->CMDqueue ^= OC_RECEIVE;
1599                                 Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer);
1600                                 tp->scb.Parm[0] = LOWORD(Addr);
1601                                 tp->scb.Parm[1] = HIWORD(Addr);
1602                                 tp->scb.CMD = RECEIVE;
1603                         }
1604                         else
1605                         {
1606                                 if(tp->CMDqueue & OC_TRANSMIT_HALT)
1607                                 {
1608                                         /* NOTE: TRANSMIT.HALT must be checked
1609                                          * before TRANSMIT.
1610                                          */
1611                                         tp->CMDqueue ^= OC_TRANSMIT_HALT;
1612                                         tp->scb.CMD = TRANSMIT_HALT;
1613
1614                                         /* Parm[0] and Parm[1] are ignored
1615                                          * but should be set to zero!
1616                                          */
1617                                         tp->scb.Parm[0] = 0;
1618                                         tp->scb.Parm[1] = 0;
1619                                 }
1620                                 else
1621                                 {
1622                                         if(tp->CMDqueue & OC_TRANSMIT)
1623                                         {
1624                                                 /* NOTE: TRANSMIT must be
1625                                                  * checked after TRANSMIT.HALT
1626                                                  */
1627                                                 if(tp->TransmitCommandActive)
1628                                                 {
1629                                                         if(!tp->TransmitHaltScheduled)
1630                                                         {
1631                                                                 tp->TransmitHaltScheduled = 1;
1632                                                                 tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
1633                                                         }
1634                                                         tp->TransmitCommandActive = 0;
1635                                                         return;
1636                                                 }
1637
1638                                                 tp->CMDqueue ^= OC_TRANSMIT;
1639                                                 tms380tr_cancel_tx_queue(tp);
1640                                                 Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer);
1641                                                 tp->scb.Parm[0] = LOWORD(Addr);
1642                                                 tp->scb.Parm[1] = HIWORD(Addr);
1643                                                 tp->scb.CMD = TRANSMIT;
1644                                                 tp->TransmitCommandActive = 1;
1645                                         }
1646                                         else
1647                                         {
1648                                                 if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
1649                                                 {
1650                                                         tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
1651                                                         tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
1652                                                         tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
1653                                                         tp->scb.Parm[1] = 0; /* is ignored but should be zero */
1654                                                         tp->scb.CMD = MODIFY_OPEN_PARMS;
1655                                                 }
1656                                                 else
1657                                                 {
1658                                                         if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
1659                                                         {
1660                                                                 tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
1661                                                                 tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
1662                                                                 tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
1663                                                                 tp->scb.CMD = SET_FUNCT_ADDR;
1664                                                         }
1665                                                         else
1666                                                         {
1667                                                                 if(tp->CMDqueue & OC_SET_GROUP_ADDR)
1668                                                                 {
1669                                                                         tp->CMDqueue ^= OC_SET_GROUP_ADDR;
1670                                                                         tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
1671                                                                         tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
1672                                                                         tp->scb.CMD = SET_GROUP_ADDR;
1673                                                                 }
1674                                                                 else
1675                                                                 {
1676                                                                         if(tp->CMDqueue & OC_READ_ERROR_LOG)
1677                                                                         {
1678                                                                                 tp->CMDqueue ^= OC_READ_ERROR_LOG;
1679                                                                                 Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer);
1680                                                                                 tp->scb.Parm[0] = LOWORD(Addr);
1681                                                                                 tp->scb.Parm[1] = HIWORD(Addr);
1682                                                                                 tp->scb.CMD = READ_ERROR_LOG;
1683                                                                         }
1684                                                                         else
1685                                                                         {
1686                                                                                 printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
1687                                                                                 tp->CMDqueue = 0;
1688                                                                                 return;
1689                                                                         }
1690                                                                 }
1691                                                         }
1692                                                 }
1693                                         }
1694                                 }
1695                         }
1696                 }
1697         }
1698
1699         tp->ScbInUse = 1;       /* Set semaphore: SCB in use. */
1700
1701         /* Execute SCB and generate IRQ when done. */
1702         tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
1703
1704         return;
1705 }
1706
1707 /*
1708  * IRQ conditions: signal loss on the ring, transmit or receive of beacon
1709  * frames (disabled if bit 1 of OPEN option is set); report error MAC
1710  * frame transmit (disabled if bit 2 of OPEN option is set); open or short
1711  * circuit fault on the lobe is detected; remove MAC frame received;
1712  * error counter overflow (255); opened adapter is the only station in ring.
1713  * After some of the IRQs the adapter is closed!
1714  */
1715 static void tms380tr_ring_status_irq(struct net_device *dev)
1716 {
1717         struct net_local *tp = netdev_priv(dev);
1718
1719         tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]);
1720
1721         /* First: fill up statistics */
1722         if(tp->ssb.Parm[0] & SIGNAL_LOSS)
1723         {
1724                 printk(KERN_INFO "%s: Signal Loss\n", dev->name);
1725                 tp->MacStat.line_errors++;
1726         }
1727
1728         /* Adapter is closed, but initialized */
1729         if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
1730         {
1731                 printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n",
1732                         dev->name);
1733                 tp->MacStat.line_errors++;
1734         }
1735
1736         if(tp->ssb.Parm[0] & RING_RECOVERY)
1737                 printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
1738
1739         /* Counter overflow: read error log */
1740         if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
1741         {
1742                 printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
1743                 tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG);
1744         }
1745
1746         /* Adapter is closed, but initialized */
1747         if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
1748                 printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n",
1749                         dev->name);
1750
1751         /* Adapter is closed, but initialized */
1752         if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
1753                 printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n",
1754                         dev->name);
1755
1756         if(tp->ssb.Parm[0] & HARD_ERROR)
1757                 printk(KERN_INFO "%s: Hard Error\n", dev->name);
1758
1759         if(tp->ssb.Parm[0] & SOFT_ERROR)
1760                 printk(KERN_INFO "%s: Soft Error\n", dev->name);
1761
1762         if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
1763                 printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
1764
1765         if(tp->ssb.Parm[0] & SINGLE_STATION)
1766                 printk(KERN_INFO "%s: Single Station\n", dev->name);
1767
1768         /* Check if adapter has been closed */
1769         if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
1770         {
1771                 printk(KERN_INFO "%s: Adapter closed (Reopening),"
1772                         "CurrentRingStat %x\n",
1773                         dev->name, tp->CurrentRingStatus);
1774                 tp->AdapterOpenFlag = 0;
1775                 tms380tr_open_adapter(dev);
1776         }
1777
1778         return;
1779 }
1780
1781 /*
1782  * Issued if adapter has encountered an unrecoverable hardware
1783  * or software error.
1784  */
1785 static void tms380tr_chk_irq(struct net_device *dev)
1786 {
1787         int i;
1788         unsigned short AdapterCheckBlock[4];
1789         struct net_local *tp = netdev_priv(dev);
1790
1791         tp->AdapterOpenFlag = 0;        /* Adapter closed now */
1792
1793         /* Page number of adapter memory */
1794         SIFWRITEW(0x0001, SIFADX);
1795         /* Address offset */
1796         SIFWRITEW(CHECKADDR, SIFADR);
1797
1798         /* Reading 8 byte adapter check block. */
1799         for(i = 0; i < 4; i++)
1800                 AdapterCheckBlock[i] = SIFREADW(SIFINC);
1801
1802         if(tms380tr_debug > 3)
1803         {
1804                 printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name);
1805                 for (i = 0; i < 4; i++)
1806                         printk("%04X", AdapterCheckBlock[i]);
1807                 printk("\n");
1808         }
1809
1810         switch(AdapterCheckBlock[0])
1811         {
1812                 case DIO_PARITY:
1813                         printk(KERN_INFO "%s: DIO parity error\n", dev->name);
1814                         break;
1815
1816                 case DMA_READ_ABORT:
1817                         printk(KERN_INFO "%s DMA read operation aborted:\n",
1818                                 dev->name);
1819                         switch (AdapterCheckBlock[1])
1820                         {
1821                                 case 0:
1822                                         printk(KERN_INFO "Timeout\n");
1823                                         printk(KERN_INFO "Address: %04X %04X\n",
1824                                                 AdapterCheckBlock[2],
1825                                                 AdapterCheckBlock[3]);
1826                                         break;
1827
1828                                 case 1:
1829                                         printk(KERN_INFO "Parity error\n");
1830                                         printk(KERN_INFO "Address: %04X %04X\n",
1831                                                 AdapterCheckBlock[2],
1832                                                 AdapterCheckBlock[3]);
1833                                         break;
1834
1835                                 case 2:
1836                                         printk(KERN_INFO "Bus error\n");
1837                                         printk(KERN_INFO "Address: %04X %04X\n",
1838                                                 AdapterCheckBlock[2],
1839                                                 AdapterCheckBlock[3]);
1840                                         break;
1841
1842                                 default:
1843                                         printk(KERN_INFO "Unknown error.\n");
1844                                         break;
1845                         }
1846                         break;
1847
1848                 case DMA_WRITE_ABORT:
1849                         printk(KERN_INFO "%s: DMA write operation aborted: \n",
1850                                 dev->name);
1851                         switch (AdapterCheckBlock[1])
1852                         {
1853                                 case 0:
1854                                         printk(KERN_INFO "Timeout\n");
1855                                         printk(KERN_INFO "Address: %04X %04X\n",
1856                                                 AdapterCheckBlock[2],
1857                                                 AdapterCheckBlock[3]);
1858                                         break;
1859
1860                                 case 1:
1861                                         printk(KERN_INFO "Parity error\n");
1862                                         printk(KERN_INFO "Address: %04X %04X\n",
1863                                                 AdapterCheckBlock[2],
1864                                                 AdapterCheckBlock[3]);
1865                                         break;
1866
1867                                 case 2:
1868                                         printk(KERN_INFO "Bus error\n");
1869                                         printk(KERN_INFO "Address: %04X %04X\n",
1870                                                 AdapterCheckBlock[2],
1871                                                 AdapterCheckBlock[3]);
1872                                         break;
1873
1874                                 default:
1875                                         printk(KERN_INFO "Unknown error.\n");
1876                                         break;
1877                         }
1878                         break;
1879
1880                 case ILLEGAL_OP_CODE:
1881                         printk(KERN_INFO "%s: Illegal operation code in firmware\n",
1882                                 dev->name);
1883                         /* Parm[0-3]: adapter internal register R13-R15 */
1884                         break;
1885
1886                 case PARITY_ERRORS:
1887                         printk(KERN_INFO "%s: Adapter internal bus parity error\n",
1888                                 dev->name);
1889                         /* Parm[0-3]: adapter internal register R13-R15 */
1890                         break;
1891
1892                 case RAM_DATA_ERROR:
1893                         printk(KERN_INFO "%s: RAM data error\n", dev->name);
1894                         /* Parm[0-1]: MSW/LSW address of RAM location. */
1895                         break;
1896
1897                 case RAM_PARITY_ERROR:
1898                         printk(KERN_INFO "%s: RAM parity error\n", dev->name);
1899                         /* Parm[0-1]: MSW/LSW address of RAM location. */
1900                         break;
1901
1902                 case RING_UNDERRUN:
1903                         printk(KERN_INFO "%s: Internal DMA underrun detected\n",
1904                                 dev->name);
1905                         break;
1906
1907                 case INVALID_IRQ:
1908                         printk(KERN_INFO "%s: Unrecognized interrupt detected\n",
1909                                 dev->name);
1910                         /* Parm[0-3]: adapter internal register R13-R15 */
1911                         break;
1912
1913                 case INVALID_ERROR_IRQ:
1914                         printk(KERN_INFO "%s: Unrecognized error interrupt detected\n",
1915                                 dev->name);
1916                         /* Parm[0-3]: adapter internal register R13-R15 */
1917                         break;
1918
1919                 case INVALID_XOP:
1920                         printk(KERN_INFO "%s: Unrecognized XOP request detected\n",
1921                                 dev->name);
1922                         /* Parm[0-3]: adapter internal register R13-R15 */
1923                         break;
1924
1925                 default:
1926                         printk(KERN_INFO "%s: Unknown status", dev->name);
1927                         break;
1928         }
1929
1930         if(tms380tr_chipset_init(dev) == 1)
1931         {
1932                 /* Restart of firmware successful */
1933                 tp->AdapterOpenFlag = 1;
1934         }
1935
1936         return;
1937 }
1938
1939 /*
1940  * Internal adapter pointer to RAM data are copied from adapter into
1941  * host system.
1942  */
1943 static int tms380tr_read_ptr(struct net_device *dev)
1944 {
1945         struct net_local *tp = netdev_priv(dev);
1946         unsigned short adapterram;
1947
1948         tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
1949                         ADAPTER_INT_PTRS, 16);
1950         tms380tr_read_ram(dev, (unsigned char *)&adapterram,
1951                         cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2);
1952         return be16_to_cpu(adapterram);
1953 }
1954
1955 /*
1956  * Reads a number of bytes from adapter to system memory.
1957  */
1958 static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data,
1959                                 unsigned short Address, int Length)
1960 {
1961         int i;
1962         unsigned short old_sifadx, old_sifadr, InWord;
1963
1964         /* Save the current values */
1965         old_sifadx = SIFREADW(SIFADX);
1966         old_sifadr = SIFREADW(SIFADR);
1967
1968         /* Page number of adapter memory */
1969         SIFWRITEW(0x0001, SIFADX);
1970         /* Address offset in adapter RAM */
1971         SIFWRITEW(Address, SIFADR);
1972
1973         /* Copy len byte from adapter memory to system data area. */
1974         i = 0;
1975         for(;;)
1976         {
1977                 InWord = SIFREADW(SIFINC);
1978
1979                 *(Data + i) = HIBYTE(InWord);   /* Write first byte */
1980                 if(++i == Length)               /* All is done break */
1981                         break;
1982
1983                 *(Data + i) = LOBYTE(InWord);   /* Write second byte */
1984                 if (++i == Length)              /* All is done break */
1985                         break;
1986         }
1987
1988         /* Restore original values */
1989         SIFWRITEW(old_sifadx, SIFADX);
1990         SIFWRITEW(old_sifadr, SIFADR);
1991
1992         return;
1993 }
1994
1995 /*
1996  * Cancel all queued packets in the transmission queue.
1997  */
1998 static void tms380tr_cancel_tx_queue(struct net_local* tp)
1999 {
2000         TPL *tpl;
2001
2002         /*
2003          * NOTE: There must not be an active TRANSMIT command pending, when
2004          * this function is called.
2005          */
2006         if(tp->TransmitCommandActive)
2007                 return;
2008
2009         for(;;)
2010         {
2011                 tpl = tp->TplBusy;
2012                 if(!tpl->BusyFlag)
2013                         break;
2014                 /* "Remove" TPL from busy list. */
2015                 tp->TplBusy = tpl->NextTPLPtr;
2016                 tms380tr_write_tpl_status(tpl, 0);      /* Clear VALID bit */
2017                 tpl->BusyFlag = 0;              /* "free" TPL */
2018
2019                 printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
2020                 if (tpl->DMABuff)
2021                         dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2022                 dev_kfree_skb_any(tpl->Skb);
2023         }
2024
2025         return;
2026 }
2027
2028 /*
2029  * This function is called whenever a transmit interrupt is generated by the
2030  * adapter. For a command complete interrupt, it is checked if we have to
2031  * issue a new transmit command or not.
2032  */
2033 static void tms380tr_tx_status_irq(struct net_device *dev)
2034 {
2035         struct net_local *tp = netdev_priv(dev);
2036         unsigned char HighByte, HighAc, LowAc;
2037         TPL *tpl;
2038
2039         /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
2040          * available, because the CLEAR SSB command has already been issued.
2041          *
2042          * Process all complete transmissions.
2043          */
2044
2045         for(;;)
2046         {
2047                 tpl = tp->TplBusy;
2048                 if(!tpl->BusyFlag || (tpl->Status
2049                         & (TX_VALID | TX_FRAME_COMPLETE))
2050                         != TX_FRAME_COMPLETE)
2051                 {
2052                         break;
2053                 }
2054
2055                 /* "Remove" TPL from busy list. */
2056                 tp->TplBusy = tpl->NextTPLPtr ;
2057
2058                 /* Check the transmit status field only for directed frames*/
2059                 if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
2060                 {
2061                         HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
2062                         HighAc   = GET_FRAME_STATUS_HIGH_AC(HighByte);
2063                         LowAc    = GET_FRAME_STATUS_LOW_AC(HighByte);
2064
2065                         if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
2066                         {
2067                                 printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n",
2068                                         dev->name,
2069                                         *(unsigned long *)&tpl->MData[2+2]);
2070                         }
2071                         else
2072                         {
2073                                 if(tms380tr_debug > 3)
2074                                         printk(KERN_DEBUG "%s: Directed frame tx'd\n",
2075                                                 dev->name);
2076                         }
2077                 }
2078                 else
2079                 {
2080                         if(!DIRECTED_FRAME(tpl))
2081                         {
2082                                 if(tms380tr_debug > 3)
2083                                         printk(KERN_DEBUG "%s: Broadcast frame tx'd\n",
2084                                                 dev->name);
2085                         }
2086                 }
2087
2088                 tp->MacStat.tx_packets++;
2089                 if (tpl->DMABuff)
2090                         dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE);
2091                 dev_kfree_skb_irq(tpl->Skb);
2092                 tpl->BusyFlag = 0;      /* "free" TPL */
2093         }
2094
2095         if(!tp->TplFree->NextTPLPtr->BusyFlag)
2096                 netif_wake_queue(dev);
2097         return;
2098 }
2099
2100 /*
2101  * Called if a frame receive interrupt is generated by the adapter.
2102  * Check if the frame is valid and indicate it to system.
2103  */
2104 static void tms380tr_rcv_status_irq(struct net_device *dev)
2105 {
2106         struct net_local *tp = netdev_priv(dev);
2107         unsigned char *ReceiveDataPtr;
2108         struct sk_buff *skb;
2109         unsigned int Length, Length2;
2110         RPL *rpl;
2111         RPL *SaveHead;
2112         dma_addr_t dmabuf;
2113
2114         /* NOTE: At this point the SSB from RECEIVE STATUS is no longer
2115          * available, because the CLEAR SSB command has already been issued.
2116          *
2117          * Process all complete receives.
2118          */
2119
2120         for(;;)
2121         {
2122                 rpl = tp->RplHead;
2123                 if(rpl->Status & RX_VALID)
2124                         break;          /* RPL still in use by adapter */
2125
2126                 /* Forward RPLHead pointer to next list. */
2127                 SaveHead = tp->RplHead;
2128                 tp->RplHead = rpl->NextRPLPtr;
2129
2130                 /* Get the frame size (Byte swap for Intel).
2131                  * Do this early (see workaround comment below)
2132                  */
2133                 Length = be16_to_cpu(rpl->FrameSize);
2134
2135                 /* Check if the Frame_Start, Frame_End and
2136                  * Frame_Complete bits are set.
2137                  */
2138                 if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
2139                         == VALID_SINGLE_BUFFER_FRAME)
2140                 {
2141                         ReceiveDataPtr = rpl->MData;
2142
2143                         /* Workaround for delayed write of FrameSize on ISA
2144                          * (FrameSize is false but valid-bit is reset)
2145                          * Frame size is set to zero when the RPL is freed.
2146                          * Length2 is there because there have also been
2147                          * cases where the FrameSize was partially written
2148                          */
2149                         Length2 = be16_to_cpu(rpl->FrameSize);
2150
2151                         if(Length == 0 || Length != Length2)
2152                         {
2153                                 tp->RplHead = SaveHead;
2154                                 break;  /* Return to tms380tr_interrupt */
2155                         }
2156                         tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length);
2157
2158                         if(tms380tr_debug > 3)
2159                                 printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n",
2160                                         dev->name, Length, Length);
2161
2162                         /* Indicate the received frame to system the
2163                          * adapter does the Source-Routing padding for
2164                          * us. See: OpenOptions in tms380tr_init_opb()
2165                          */
2166                         skb = rpl->Skb;
2167                         if(rpl->SkbStat == SKB_UNAVAILABLE)
2168                         {
2169                                 /* Try again to allocate skb */
2170                                 skb = dev_alloc_skb(tp->MaxPacketSize);
2171                                 if(skb == NULL)
2172                                 {
2173                                         /* Update Stats ?? */
2174                                 }
2175                                 else
2176                                 {
2177                                         skb_put(skb, tp->MaxPacketSize);
2178                                         rpl->SkbStat    = SKB_DATA_COPY;
2179                                         ReceiveDataPtr  = rpl->MData;
2180                                 }
2181                         }
2182
2183                         if(skb && (rpl->SkbStat == SKB_DATA_COPY ||
2184                                    rpl->SkbStat == SKB_DMA_DIRECT))
2185                         {
2186                                 if(rpl->SkbStat == SKB_DATA_COPY)
2187                                         skb_copy_to_linear_data(skb, ReceiveDataPtr,
2188                                                        Length);
2189
2190                                 /* Deliver frame to system */
2191                                 rpl->Skb = NULL;
2192                                 skb_trim(skb,Length);
2193                                 skb->protocol = tr_type_trans(skb,dev);
2194                                 netif_rx(skb);
2195                         }
2196                 }
2197                 else    /* Invalid frame */
2198                 {
2199                         if(rpl->Skb != NULL)
2200                                 dev_kfree_skb_irq(rpl->Skb);
2201
2202                         /* Skip list. */
2203                         if(rpl->Status & RX_START_FRAME)
2204                                 /* Frame start bit is set -> overflow. */
2205                                 tp->MacStat.rx_errors++;
2206                 }
2207                 if (rpl->DMABuff)
2208                         dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE);
2209                 rpl->DMABuff = 0;
2210
2211                 /* Allocate new skb for rpl */
2212                 rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
2213                 /* skb == NULL ? then use local buffer */
2214                 if(rpl->Skb == NULL)
2215                 {
2216                         rpl->SkbStat = SKB_UNAVAILABLE;
2217                         rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2218                         rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2219                 }
2220                 else    /* skb != NULL */
2221                 {
2222                         rpl->Skb->dev = dev;
2223                         skb_put(rpl->Skb, tp->MaxPacketSize);
2224
2225                         /* Data unreachable for DMA ? then use local buffer */
2226                         dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE);
2227                         if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit))
2228                         {
2229                                 rpl->SkbStat = SKB_DATA_COPY;
2230                                 rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer);
2231                                 rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
2232                         }
2233                         else
2234                         {
2235                                 /* DMA directly in skb->data */
2236                                 rpl->SkbStat = SKB_DMA_DIRECT;
2237                                 rpl->FragList[0].DataAddr = htonl(dmabuf);
2238                                 rpl->MData = rpl->Skb->data;
2239                                 rpl->DMABuff = dmabuf;
2240                         }
2241                 }
2242
2243                 rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize);
2244                 rpl->FrameSize = 0;
2245
2246                 /* Pass the last RPL back to the adapter */
2247                 tp->RplTail->FrameSize = 0;
2248
2249                 /* Reset the CSTAT field in the list. */
2250                 tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
2251
2252                 /* Current RPL becomes last one in list. */
2253                 tp->RplTail = tp->RplTail->NextRPLPtr;
2254
2255                 /* Inform adapter about RPL valid. */
2256                 tms380tr_exec_sifcmd(dev, CMD_RX_VALID);
2257         }
2258
2259         return;
2260 }
2261
2262 /*
2263  * This function should be used whenever the status of any RPL must be
2264  * modified by the driver, because the compiler may otherwise change the
2265  * order of instructions such that writing the RPL status may be executed
2266  * at an undesirable time. When this function is used, the status is
2267  * always written when the function is called.
2268  */
2269 static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status)
2270 {
2271         rpl->Status = Status;
2272
2273         return;
2274 }
2275
2276 /*
2277  * The function updates the statistic counters in mac->MacStat.
2278  * It differtiates between directed and broadcast/multicast ( ==functional)
2279  * frames.
2280  */
2281 static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
2282                                         unsigned int Length)
2283 {
2284         tp->MacStat.rx_packets++;
2285         tp->MacStat.rx_bytes += Length;
2286
2287         /* Test functional bit */
2288         if(DataPtr[2] & GROUP_BIT)
2289                 tp->MacStat.multicast++;
2290
2291         return;
2292 }
2293
2294 static int tms380tr_set_mac_address(struct net_device *dev, void *addr)
2295 {
2296         struct net_local *tp = netdev_priv(dev);
2297         struct sockaddr *saddr = addr;
2298
2299         if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) {
2300                 printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name);
2301                 return -EIO;
2302         }
2303         memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len);
2304         return 0;
2305 }
2306
2307 #if TMS380TR_DEBUG > 0
2308 /*
2309  * Dump Packet (data)
2310  */
2311 static void tms380tr_dump(unsigned char *Data, int length)
2312 {
2313         int i, j;
2314
2315         for (i = 0, j = 0; i < length / 8; i++, j += 8)
2316         {
2317                 printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
2318                        Data[j+0],Data[j+1],Data[j+2],Data[j+3],
2319                        Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
2320         }
2321
2322         return;
2323 }
2324 #endif
2325
2326 void tmsdev_term(struct net_device *dev)
2327 {
2328         struct net_local *tp;
2329
2330         tp = netdev_priv(dev);
2331         dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local),
2332                 DMA_BIDIRECTIONAL);
2333 }
2334
2335 const struct net_device_ops tms380tr_netdev_ops = {
2336         .ndo_open               = tms380tr_open,
2337         .ndo_stop               = tms380tr_close,
2338         .ndo_start_xmit         = tms380tr_send_packet,
2339         .ndo_tx_timeout         = tms380tr_timeout,
2340         .ndo_get_stats          = tms380tr_get_stats,
2341         .ndo_set_multicast_list = tms380tr_set_multicast_list,
2342         .ndo_set_mac_address    = tms380tr_set_mac_address,
2343 };
2344 EXPORT_SYMBOL(tms380tr_netdev_ops);
2345
2346 int tmsdev_init(struct net_device *dev, struct device *pdev)
2347 {
2348         struct net_local *tms_local;
2349
2350         memset(netdev_priv(dev), 0, sizeof(struct net_local));
2351         tms_local = netdev_priv(dev);
2352         init_waitqueue_head(&tms_local->wait_for_tok_int);
2353         if (pdev->dma_mask)
2354                 tms_local->dmalimit = *pdev->dma_mask;
2355         else
2356                 return -ENOMEM;
2357         tms_local->pdev = pdev;
2358         tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local,
2359             sizeof(struct net_local), DMA_BIDIRECTIONAL);
2360         if (tms_local->dmabuffer + sizeof(struct net_local) >
2361                         tms_local->dmalimit)
2362         {
2363                 printk(KERN_INFO "%s: Memory not accessible for DMA\n",
2364                         dev->name);
2365                 tmsdev_term(dev);
2366                 return -ENOMEM;
2367         }
2368
2369         dev->netdev_ops         = &tms380tr_netdev_ops;
2370         dev->watchdog_timeo     = HZ;
2371
2372         return 0;
2373 }
2374
2375 EXPORT_SYMBOL(tms380tr_open);
2376 EXPORT_SYMBOL(tms380tr_close);
2377 EXPORT_SYMBOL(tms380tr_interrupt);
2378 EXPORT_SYMBOL(tmsdev_init);
2379 EXPORT_SYMBOL(tmsdev_term);
2380 EXPORT_SYMBOL(tms380tr_wait);
2381
2382 #ifdef MODULE
2383
2384 static struct module *TMS380_module = NULL;
2385
2386 int init_module(void)
2387 {
2388         printk(KERN_DEBUG "%s", version);
2389
2390         TMS380_module = &__this_module;
2391         return 0;
2392 }
2393
2394 void cleanup_module(void)
2395 {
2396         TMS380_module = NULL;
2397 }
2398 #endif
2399
2400 MODULE_LICENSE("GPL");
2401