drivers/net/fs_enet/mac-fcc.c

   1 /*
   2  * FCC driver for Motorola MPC82xx (PQ2).
   3  *
   4  * Copyright (c) 2003 Intracom S.A.
   5  *  by Pantelis Antoniou <panto@intracom.gr>
   6  *
   7  * 2005 (c) MontaVista Software, Inc.
   8  * Vitaly Bordug <vbordug@ru.mvista.com>
   9  *
  10  * This file is licensed under the terms of the GNU General Public License
  11  * version 2. This program is licensed "as is" without any warranty of any
  12  * kind, whether express or implied.
  13  */
  14
  15 #include <linux/config.h>
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/types.h>
  19 #include <linux/sched.h>
  20 #include <linux/string.h>
  21 #include <linux/ptrace.h>
  22 #include <linux/errno.h>
  23 #include <linux/ioport.h>
  24 #include <linux/slab.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/pci.h>
  27 #include <linux/init.h>
  28 #include <linux/delay.h>
  29 #include <linux/netdevice.h>
  30 #include <linux/etherdevice.h>
  31 #include <linux/skbuff.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/mii.h>
  34 #include <linux/ethtool.h>
  35 #include <linux/bitops.h>
  36 #include <linux/fs.h>
  37 #include <linux/platform_device.h>
  38
  39 #include <asm/immap_cpm2.h>
  40 #include <asm/mpc8260.h>
  41 #include <asm/cpm2.h>
  42
  43 #include <asm/pgtable.h>
  44 #include <asm/irq.h>
  45 #include <asm/uaccess.h>
  46
  47 #include "fs_enet.h"
  48
  49 /*************************************************/
  50
  51 /* FCC access macros */
  52
  53 #define __fcc_out32(addr, x)    out_be32((unsigned *)addr, x)
  54 #define __fcc_out16(addr, x)    out_be16((unsigned short *)addr, x)
  55 #define __fcc_out8(addr, x)     out_8((unsigned char *)addr, x)
  56 #define __fcc_in32(addr)        in_be32((unsigned *)addr)
  57 #define __fcc_in16(addr)        in_be16((unsigned short *)addr)
  58 #define __fcc_in8(addr)         in_8((unsigned char *)addr)
  59
  60 /* parameter space */
  61
  62 /* write, read, set bits, clear bits */
  63 #define W32(_p, _m, _v) __fcc_out32(&(_p)->_m, (_v))
  64 #define R32(_p, _m)     __fcc_in32(&(_p)->_m)
  65 #define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v))
  66 #define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v))
  67
  68 #define W16(_p, _m, _v) __fcc_out16(&(_p)->_m, (_v))
  69 #define R16(_p, _m)     __fcc_in16(&(_p)->_m)
  70 #define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v))
  71 #define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v))
  72
  73 #define W8(_p, _m, _v)  __fcc_out8(&(_p)->_m, (_v))
  74 #define R8(_p, _m)      __fcc_in8(&(_p)->_m)
  75 #define S8(_p, _m, _v)  W8(_p, _m, R8(_p, _m) | (_v))
  76 #define C8(_p, _m, _v)  W8(_p, _m, R8(_p, _m) & ~(_v))
  77
  78 /*************************************************/
  79
  80 #define FCC_MAX_MULTICAST_ADDRS 64
  81
  82 #define mk_mii_read(REG)        (0x60020000 | ((REG & 0x1f) << 18))
  83 #define mk_mii_write(REG, VAL)  (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff))
  84 #define mk_mii_end              0
  85
  86 #define MAX_CR_CMD_LOOPS        10000
  87
  88 static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op)
  89 {
  90         const struct fs_platform_info *fpi = fep->fpi;
  91
  92         cpm2_map_t *immap = fs_enet_immap;
  93         cpm_cpm2_t *cpmp = &immap->im_cpm;
  94         u32 v;
  95         int i;
  96
  97         /* Currently I don't know what feature call will look like. But
  98            I guess there'd be something like do_cpm_cmd() which will require page & sblock */
  99         v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op);
 100         W32(cpmp, cp_cpcr, v | CPM_CR_FLG);
 101         for (i = 0; i < MAX_CR_CMD_LOOPS; i++)
 102                 if ((R32(cpmp, cp_cpcr) & CPM_CR_FLG) == 0)
 103                         break;
 104
 105         if (i >= MAX_CR_CMD_LOOPS) {
 106                 printk(KERN_ERR "%s(): Not able to issue CPM command\n",
 107                        __FUNCTION__);
 108                 return 1;
 109         }
 110
 111         return 0;
 112 }
 113
 114 static int do_pd_setup(struct fs_enet_private *fep)
 115 {
 116         struct platform_device *pdev = to_platform_device(fep->dev);
 117         struct resource *r;
 118
 119         /* Fill out IRQ field */
 120         fep->interrupt = platform_get_irq(pdev, 0);
 121
 122         /* Attach the memory for the FCC Parameter RAM */
 123         r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_pram");
 124         fep->fcc.ep = (void *)r->start;
 125
 126         if (fep->fcc.ep == NULL)
 127                 return -EINVAL;
 128
 129         r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_regs");
 130         fep->fcc.fccp = (void *)r->start;
 131
 132         if (fep->fcc.fccp == NULL)
 133                 return -EINVAL;
 134
 135         fep->fcc.fcccp = (void *)fep->fpi->fcc_regs_c;
 136
 137         if (fep->fcc.fcccp == NULL)
 138                 return -EINVAL;
 139
 140         return 0;
 141 }
 142
 143 #define FCC_NAPI_RX_EVENT_MSK   (FCC_ENET_RXF | FCC_ENET_RXB)
 144 #define FCC_RX_EVENT            (FCC_ENET_RXF)
 145 #define FCC_TX_EVENT            (FCC_ENET_TXB)
 146 #define FCC_ERR_EVENT_MSK       (FCC_ENET_TXE | FCC_ENET_BSY)
 147
 148 static int setup_data(struct net_device *dev)
 149 {
 150         struct fs_enet_private *fep = netdev_priv(dev);
 151         const struct fs_platform_info *fpi = fep->fpi;
 152
 153         fep->fcc.idx = fs_get_fcc_index(fpi->fs_no);
 154         if ((unsigned int)fep->fcc.idx >= 3)    /* max 3 FCCs */
 155                 return -EINVAL;
 156
 157         fep->fcc.mem = (void *)fpi->mem_offset;
 158
 159         if (do_pd_setup(fep) != 0)
 160                 return -EINVAL;
 161
 162         fep->ev_napi_rx = FCC_NAPI_RX_EVENT_MSK;
 163         fep->ev_rx = FCC_RX_EVENT;
 164         fep->ev_tx = FCC_TX_EVENT;
 165         fep->ev_err = FCC_ERR_EVENT_MSK;
 166
 167         return 0;
 168 }
 169
 170 static int allocate_bd(struct net_device *dev)
 171 {
 172         struct fs_enet_private *fep = netdev_priv(dev);
 173         const struct fs_platform_info *fpi = fep->fpi;
 174
 175         fep->ring_base = dma_alloc_coherent(fep->dev,
 176                                             (fpi->tx_ring + fpi->rx_ring) *
 177                                             sizeof(cbd_t), &fep->ring_mem_addr,
 178                                             GFP_KERNEL);
 179         if (fep->ring_base == NULL)
 180                 return -ENOMEM;
 181
 182         return 0;
 183 }
 184
 185 static void free_bd(struct net_device *dev)
 186 {
 187         struct fs_enet_private *fep = netdev_priv(dev);
 188         const struct fs_platform_info *fpi = fep->fpi;
 189
 190         if (fep->ring_base)
 191                 dma_free_coherent(fep->dev,
 192                         (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t),
 193                         fep->ring_base, fep->ring_mem_addr);
 194 }
 195
 196 static void cleanup_data(struct net_device *dev)
 197 {
 198         /* nothing */
 199 }
 200
 201 static void set_promiscuous_mode(struct net_device *dev)
 202 {
 203         struct fs_enet_private *fep = netdev_priv(dev);
 204         fcc_t *fccp = fep->fcc.fccp;
 205
 206         S32(fccp, fcc_fpsmr, FCC_PSMR_PRO);
 207 }
 208
 209 static void set_multicast_start(struct net_device *dev)
 210 {
 211         struct fs_enet_private *fep = netdev_priv(dev);
 212         fcc_enet_t *ep = fep->fcc.ep;
 213
 214         W32(ep, fen_gaddrh, 0);
 215         W32(ep, fen_gaddrl, 0);
 216 }
 217
 218 static void set_multicast_one(struct net_device *dev, const u8 *mac)
 219 {
 220         struct fs_enet_private *fep = netdev_priv(dev);
 221         fcc_enet_t *ep = fep->fcc.ep;
 222         u16 taddrh, taddrm, taddrl;
 223
 224         taddrh = ((u16)mac[5] << 8) | mac[4];
 225         taddrm = ((u16)mac[3] << 8) | mac[2];
 226         taddrl = ((u16)mac[1] << 8) | mac[0];
 227
 228         W16(ep, fen_taddrh, taddrh);
 229         W16(ep, fen_taddrm, taddrm);
 230         W16(ep, fen_taddrl, taddrl);
 231         fcc_cr_cmd(fep, 0x0C, CPM_CR_SET_GADDR);
 232 }
 233
 234 static void set_multicast_finish(struct net_device *dev)
 235 {
 236         struct fs_enet_private *fep = netdev_priv(dev);
 237         fcc_t *fccp = fep->fcc.fccp;
 238         fcc_enet_t *ep = fep->fcc.ep;
 239
 240         /* clear promiscuous always */
 241         C32(fccp, fcc_fpsmr, FCC_PSMR_PRO);
 242
 243         /* if all multi or too many multicasts; just enable all */
 244         if ((dev->flags & IFF_ALLMULTI) != 0 ||
 245             dev->mc_count > FCC_MAX_MULTICAST_ADDRS) {
 246
 247                 W32(ep, fen_gaddrh, 0xffffffff);
 248                 W32(ep, fen_gaddrl, 0xffffffff);
 249         }
 250
 251         /* read back */
 252         fep->fcc.gaddrh = R32(ep, fen_gaddrh);
 253         fep->fcc.gaddrl = R32(ep, fen_gaddrl);
 254 }
 255
 256 static void set_multicast_list(struct net_device *dev)
 257 {
 258         struct dev_mc_list *pmc;
 259
 260         if ((dev->flags & IFF_PROMISC) == 0) {
 261                 set_multicast_start(dev);
 262                 for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next)
 263                         set_multicast_one(dev, pmc->dmi_addr);
 264                 set_multicast_finish(dev);
 265         } else
 266                 set_promiscuous_mode(dev);
 267 }
 268
 269 static void restart(struct net_device *dev)
 270 {
 271         struct fs_enet_private *fep = netdev_priv(dev);
 272         const struct fs_platform_info *fpi = fep->fpi;
 273         fcc_t *fccp = fep->fcc.fccp;
 274         fcc_c_t *fcccp = fep->fcc.fcccp;
 275         fcc_enet_t *ep = fep->fcc.ep;
 276         dma_addr_t rx_bd_base_phys, tx_bd_base_phys;
 277         u16 paddrh, paddrm, paddrl;
 278         u16 mem_addr;
 279         const unsigned char *mac;
 280         int i;
 281
 282         C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
 283
 284         /* clear everything (slow & steady does it) */
 285         for (i = 0; i < sizeof(*ep); i++)
 286                 __fcc_out8((char *)ep + i, 0);
 287
 288         /* get physical address */
 289         rx_bd_base_phys = fep->ring_mem_addr;
 290         tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring;
 291
 292         /* point to bds */
 293         W32(ep, fen_genfcc.fcc_rbase, rx_bd_base_phys);
 294         W32(ep, fen_genfcc.fcc_tbase, tx_bd_base_phys);
 295
 296         /* Set maximum bytes per receive buffer.
 297          * It must be a multiple of 32.
 298          */
 299         W16(ep, fen_genfcc.fcc_mrblr, PKT_MAXBLR_SIZE);
 300
 301         W32(ep, fen_genfcc.fcc_rstate, (CPMFCR_GBL | CPMFCR_EB) << 24);
 302         W32(ep, fen_genfcc.fcc_tstate, (CPMFCR_GBL | CPMFCR_EB) << 24);
 303
 304         /* Allocate space in the reserved FCC area of DPRAM for the
 305          * internal buffers.  No one uses this space (yet), so we
 306          * can do this.  Later, we will add resource management for
 307          * this area.
 308          */
 309
 310         mem_addr = (u32) fep->fcc.mem;  /* de-fixup dpram offset */
 311
 312         W16(ep, fen_genfcc.fcc_riptr, (mem_addr & 0xffff));
 313         W16(ep, fen_genfcc.fcc_tiptr, ((mem_addr + 32) & 0xffff));
 314         W16(ep, fen_padptr, mem_addr + 64);
 315
 316         /* fill with special symbol...  */
 317         memset(fep->fcc.mem + fpi->dpram_offset + 64, 0x88, 32);
 318
 319         W32(ep, fen_genfcc.fcc_rbptr, 0);
 320         W32(ep, fen_genfcc.fcc_tbptr, 0);
 321         W32(ep, fen_genfcc.fcc_rcrc, 0);
 322         W32(ep, fen_genfcc.fcc_tcrc, 0);
 323         W16(ep, fen_genfcc.fcc_res1, 0);
 324         W32(ep, fen_genfcc.fcc_res2, 0);
 325
 326         /* no CAM */
 327         W32(ep, fen_camptr, 0);
 328
 329         /* Set CRC preset and mask */
 330         W32(ep, fen_cmask, 0xdebb20e3);
 331         W32(ep, fen_cpres, 0xffffffff);
 332
 333         W32(ep, fen_crcec, 0);          /* CRC Error counter       */
 334         W32(ep, fen_alec, 0);           /* alignment error counter */
 335         W32(ep, fen_disfc, 0);          /* discard frame counter   */
 336         W16(ep, fen_retlim, 15);        /* Retry limit threshold   */
 337         W16(ep, fen_pper, 0);           /* Normal persistence      */
 338
 339         /* set group address */
 340         W32(ep, fen_gaddrh, fep->fcc.gaddrh);
 341         W32(ep, fen_gaddrl, fep->fcc.gaddrh);
 342
 343         /* Clear hash filter tables */
 344         W32(ep, fen_iaddrh, 0);
 345         W32(ep, fen_iaddrl, 0);
 346
 347         /* Clear the Out-of-sequence TxBD  */
 348         W16(ep, fen_tfcstat, 0);
 349         W16(ep, fen_tfclen, 0);
 350         W32(ep, fen_tfcptr, 0);
 351
 352         W16(ep, fen_mflr, PKT_MAXBUF_SIZE);     /* maximum frame length register */
 353         W16(ep, fen_minflr, PKT_MINBUF_SIZE);   /* minimum frame length register */
 354
 355         /* set address */
 356         mac = dev->dev_addr;
 357         paddrh = ((u16)mac[5] << 8) | mac[4];
 358         paddrm = ((u16)mac[3] << 8) | mac[2];
 359         paddrl = ((u16)mac[1] << 8) | mac[0];
 360
 361         W16(ep, fen_paddrh, paddrh);
 362         W16(ep, fen_paddrm, paddrm);
 363         W16(ep, fen_paddrl, paddrl);
 364
 365         W16(ep, fen_taddrh, 0);
 366         W16(ep, fen_taddrm, 0);
 367         W16(ep, fen_taddrl, 0);
 368
 369         W16(ep, fen_maxd1, 1520);       /* maximum DMA1 length */
 370         W16(ep, fen_maxd2, 1520);       /* maximum DMA2 length */
 371
 372         /* Clear stat counters, in case we ever enable RMON */
 373         W32(ep, fen_octc, 0);
 374         W32(ep, fen_colc, 0);
 375         W32(ep, fen_broc, 0);
 376         W32(ep, fen_mulc, 0);
 377         W32(ep, fen_uspc, 0);
 378         W32(ep, fen_frgc, 0);
 379         W32(ep, fen_ospc, 0);
 380         W32(ep, fen_jbrc, 0);
 381         W32(ep, fen_p64c, 0);
 382         W32(ep, fen_p65c, 0);
 383         W32(ep, fen_p128c, 0);
 384         W32(ep, fen_p256c, 0);
 385         W32(ep, fen_p512c, 0);
 386         W32(ep, fen_p1024c, 0);
 387
 388         W16(ep, fen_rfthr, 0);  /* Suggested by manual */
 389         W16(ep, fen_rfcnt, 0);
 390         W16(ep, fen_cftype, 0);
 391
 392         fs_init_bds(dev);
 393
 394         /* adjust to speed (for RMII mode) */
 395         if (fpi->use_rmii) {
 396                 if (fep->speed == 100)
 397                         C8(fcccp, fcc_gfemr, 0x20);
 398                 else
 399                         S8(fcccp, fcc_gfemr, 0x20);
 400         }
 401
 402         fcc_cr_cmd(fep, 0x0c, CPM_CR_INIT_TRX);
 403
 404         /* clear events */
 405         W16(fccp, fcc_fcce, 0xffff);
 406
 407         /* Enable interrupts we wish to service */
 408         W16(fccp, fcc_fccm, FCC_ENET_TXE | FCC_ENET_RXF | FCC_ENET_TXB);
 409
 410         /* Set GFMR to enable Ethernet operating mode */
 411         W32(fccp, fcc_gfmr, FCC_GFMR_TCI | FCC_GFMR_MODE_ENET);
 412
 413         /* set sync/delimiters */
 414         W16(fccp, fcc_fdsr, 0xd555);
 415
 416         W32(fccp, fcc_fpsmr, FCC_PSMR_ENCRC);
 417
 418         if (fpi->use_rmii)
 419                 S32(fccp, fcc_fpsmr, FCC_PSMR_RMII);
 420
 421         /* adjust to duplex mode */
 422         if (fep->duplex)
 423                 S32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB);
 424         else
 425                 C32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB);
 426
 427         S32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
 428 }
 429
 430 static void stop(struct net_device *dev)
 431 {
 432         struct fs_enet_private *fep = netdev_priv(dev);
 433         fcc_t *fccp = fep->fcc.fccp;
 434
 435         /* stop ethernet */
 436         C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT);
 437
 438         /* clear events */
 439         W16(fccp, fcc_fcce, 0xffff);
 440
 441         /* clear interrupt mask */
 442         W16(fccp, fcc_fccm, 0);
 443
 444         fs_cleanup_bds(dev);
 445 }
 446
 447 static void pre_request_irq(struct net_device *dev, int irq)
 448 {
 449         /* nothing */
 450 }
 451
 452 static void post_free_irq(struct net_device *dev, int irq)
 453 {
 454         /* nothing */
 455 }
 456
 457 static void napi_clear_rx_event(struct net_device *dev)
 458 {
 459         struct fs_enet_private *fep = netdev_priv(dev);
 460         fcc_t *fccp = fep->fcc.fccp;
 461
 462         W16(fccp, fcc_fcce, FCC_NAPI_RX_EVENT_MSK);
 463 }
 464
 465 static void napi_enable_rx(struct net_device *dev)
 466 {
 467         struct fs_enet_private *fep = netdev_priv(dev);
 468         fcc_t *fccp = fep->fcc.fccp;
 469
 470         S16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK);
 471 }
 472
 473 static void napi_disable_rx(struct net_device *dev)
 474 {
 475         struct fs_enet_private *fep = netdev_priv(dev);
 476         fcc_t *fccp = fep->fcc.fccp;
 477
 478         C16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK);
 479 }
 480
 481 static void rx_bd_done(struct net_device *dev)
 482 {
 483         /* nothing */
 484 }
 485
 486 static void tx_kickstart(struct net_device *dev)
 487 {
 488         /* nothing */
 489 }
 490
 491 static u32 get_int_events(struct net_device *dev)
 492 {
 493         struct fs_enet_private *fep = netdev_priv(dev);
 494         fcc_t *fccp = fep->fcc.fccp;
 495
 496         return (u32)R16(fccp, fcc_fcce);
 497 }
 498
 499 static void clear_int_events(struct net_device *dev, u32 int_events)
 500 {
 501         struct fs_enet_private *fep = netdev_priv(dev);
 502         fcc_t *fccp = fep->fcc.fccp;
 503
 504         W16(fccp, fcc_fcce, int_events & 0xffff);
 505 }
 506
 507 static void ev_error(struct net_device *dev, u32 int_events)
 508 {
 509         printk(KERN_WARNING DRV_MODULE_NAME
 510                ": %s FS_ENET ERROR(s) 0x%x\n", dev->name, int_events);
 511 }
 512
 513 int get_regs(struct net_device *dev, void *p, int *sizep)
 514 {
 515         struct fs_enet_private *fep = netdev_priv(dev);
 516
 517         if (*sizep < sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t))
 518                 return -EINVAL;
 519
 520         memcpy_fromio(p, fep->fcc.fccp, sizeof(fcc_t));
 521         p = (char *)p + sizeof(fcc_t);
 522
 523         memcpy_fromio(p, fep->fcc.fcccp, sizeof(fcc_c_t));
 524         p = (char *)p + sizeof(fcc_c_t);
 525
 526         memcpy_fromio(p, fep->fcc.ep, sizeof(fcc_enet_t));
 527
 528         return 0;
 529 }
 530
 531 int get_regs_len(struct net_device *dev)
 532 {
 533         return sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t);
 534 }
 535
 536 /* Some transmit errors cause the transmitter to shut
 537  * down.  We now issue a restart transmit.  Since the
 538  * errors close the BD and update the pointers, the restart
 539  * _should_ pick up without having to reset any of our
 540  * pointers either.  Also, To workaround 8260 device erratum
 541  * CPM37, we must disable and then re-enable the transmitter
 542  * following a Late Collision, Underrun, or Retry Limit error.
 543  */
 544 void tx_restart(struct net_device *dev)
 545 {
 546         struct fs_enet_private *fep = netdev_priv(dev);
 547         fcc_t *fccp = fep->fcc.fccp;
 548
 549         C32(fccp, fcc_gfmr, FCC_GFMR_ENT);
 550         udelay(10);
 551         S32(fccp, fcc_gfmr, FCC_GFMR_ENT);
 552
 553         fcc_cr_cmd(fep, 0x0C, CPM_CR_RESTART_TX);
 554 }
 555
 556 /*************************************************************************/
 557
 558 const struct fs_ops fs_fcc_ops = {
 559         .setup_data             = setup_data,
 560         .cleanup_data           = cleanup_data,
 561         .set_multicast_list     = set_multicast_list,
 562         .restart                = restart,
 563         .stop                   = stop,
 564         .pre_request_irq        = pre_request_irq,
 565         .post_free_irq          = post_free_irq,
 566         .napi_clear_rx_event    = napi_clear_rx_event,
 567         .napi_enable_rx         = napi_enable_rx,
 568         .napi_disable_rx        = napi_disable_rx,
 569         .rx_bd_done             = rx_bd_done,
 570         .tx_kickstart           = tx_kickstart,
 571         .get_int_events         = get_int_events,
 572         .clear_int_events       = clear_int_events,
 573         .ev_error               = ev_error,
 574         .get_regs               = get_regs,
 575         .get_regs_len           = get_regs_len,
 576         .tx_restart             = tx_restart,
 577         .allocate_bd            = allocate_bd,
 578         .free_bd                = free_bd,
 579 };