drivers/net/mcffec.c

   1 /*
   2  * (C) Copyright 2000-2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2007 Freescale Semiconductor, Inc.
   6  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <malloc.h>
  29
  30 #ifdef CONFIG_MCFFEC
  31
  32 #include <asm/fec.h>
  33 #include <asm/immap.h>
  34
  35 #include <command.h>
  36 #include <net.h>
  37 #include <miiphy.h>
  38
  39 #undef  ET_DEBUG
  40 #undef  MII_DEBUG
  41
  42 /* Ethernet Transmit and Receive Buffers */
  43 #define DBUF_LENGTH             1520
  44 #define TX_BUF_CNT              2
  45 #define PKT_MAXBUF_SIZE         1518
  46 #define PKT_MINBUF_SIZE         64
  47 #define PKT_MAXBLR_SIZE         1520
  48 #define LAST_PKTBUFSRX          PKTBUFSRX - 1
  49 #define BD_ENET_RX_W_E          (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY)
  50 #define BD_ENET_TX_RDY_LST      (BD_ENET_TX_READY | BD_ENET_TX_LAST)
  51
  52 DECLARE_GLOBAL_DATA_PTR;
  53
  54 #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
  55
  56 struct fec_info_s fec_info[] = {
  57 #ifdef CFG_FEC0_IOBASE
  58         {
  59          0,                     /* index */
  60          CFG_FEC0_IOBASE,       /* io base */
  61          CFG_FEC0_PINMUX,       /* gpio pin muxing */
  62          CFG_FEC0_MIIBASE,      /* mii base */
  63          -1,                    /* phy_addr */
  64          0,                     /* duplex and speed */
  65          0,                     /* phy name */
  66          0,                     /* phyname init */
  67          0,                     /* RX BD */
  68          0,                     /* TX BD */
  69          0,                     /* rx Index */
  70          0,                     /* tx Index */
  71          0,                     /* tx buffer */
  72          0,                     /* initialized flag */
  73          },
  74 #endif
  75 #ifdef CFG_FEC1_IOBASE
  76         {
  77          1,                     /* index */
  78          CFG_FEC1_IOBASE,       /* io base */
  79          CFG_FEC1_PINMUX,       /* gpio pin muxing */
  80          CFG_FEC1_MIIBASE,      /* mii base */
  81          -1,                    /* phy_addr */
  82          0,                     /* duplex and speed */
  83          0,                     /* phy name */
  84          0,                     /* phy name init */
  85          0,                     /* RX BD */
  86          0,                     /* TX BD */
  87          0,                     /* rx Index */
  88          0,                     /* tx Index */
  89          0,                     /* tx buffer */
  90          0,                     /* initialized flag */
  91          }
  92 #endif
  93 };
  94
  95 int fec_send(struct eth_device *dev, volatile void *packet, int length);
  96 int fec_recv(struct eth_device *dev);
  97 int fec_init(struct eth_device *dev, bd_t * bd);
  98 void fec_halt(struct eth_device *dev);
  99 void fec_reset(struct eth_device *dev);
 100
 101 extern int fecpin_setclear(struct eth_device *dev, int setclear);
 102
 103 #ifdef CFG_DISCOVER_PHY
 104 extern void __mii_init(void);
 105 extern uint mii_send(uint mii_cmd);
 106 extern int mii_discover_phy(struct eth_device *dev);
 107 extern int mcffec_miiphy_read(char *devname, unsigned char addr,
 108                               unsigned char reg, unsigned short *value);
 109 extern int mcffec_miiphy_write(char *devname, unsigned char addr,
 110                                unsigned char reg, unsigned short value);
 111 #endif
 112
 113 void setFecDuplexSpeed(volatile fec_t * fecp, bd_t * bd, int dup_spd)
 114 {
 115         if ((dup_spd >> 16) == FULL) {
 116                 /* Set maximum frame length */
 117                 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE |
 118                     FEC_RCR_PROM | 0x100;
 119                 fecp->tcr = FEC_TCR_FDEN;
 120         } else {
 121                 /* Half duplex mode */
 122                 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) |
 123                     FEC_RCR_MII_MODE | FEC_RCR_DRT;
 124                 fecp->tcr &= ~FEC_TCR_FDEN;
 125         }
 126
 127         if ((dup_spd & 0xFFFF) == _100BASET) {
 128 #ifdef MII_DEBUG
 129                 printf("100Mbps\n");
 130 #endif
 131                 bd->bi_ethspeed = 100;
 132         } else {
 133 #ifdef MII_DEBUG
 134                 printf("10Mbps\n");
 135 #endif
 136                 bd->bi_ethspeed = 10;
 137         }
 138 }
 139
 140 int fec_send(struct eth_device *dev, volatile void *packet, int length)
 141 {
 142         struct fec_info_s *info = dev->priv;
 143         volatile fec_t *fecp = (fec_t *) (info->iobase);
 144         int j, rc;
 145         u16 phyStatus;
 146
 147         miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &phyStatus);
 148
 149         /* section 16.9.23.3
 150          * Wait for ready
 151          */
 152         j = 0;
 153         while ((info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_READY) &&
 154                (j < MCFFEC_TOUT_LOOP)) {
 155                 udelay(1);
 156                 j++;
 157         }
 158         if (j >= MCFFEC_TOUT_LOOP) {
 159                 printf("TX not ready\n");
 160         }
 161
 162         info->txbd[info->txIdx].cbd_bufaddr = (uint) packet;
 163         info->txbd[info->txIdx].cbd_datlen = length;
 164         info->txbd[info->txIdx].cbd_sc |= BD_ENET_TX_RDY_LST;
 165
 166         /* Activate transmit Buffer Descriptor polling */
 167         fecp->tdar = 0x01000000;        /* Descriptor polling active    */
 168
 169         /* FEC fix for MCF5275, FEC unable to initial transmit data packet.
 170          * A nop will ensure the descriptor polling active completed.
 171          */
 172 #ifdef CONFIG_M5275
 173         __asm__ ("nop");
 174 #endif
 175
 176 #ifdef CFG_UNIFY_CACHE
 177         icache_invalid();
 178 #endif
 179         j = 0;
 180         while ((info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_READY) &&
 181                (j < MCFFEC_TOUT_LOOP)) {
 182                 udelay(1);
 183                 j++;
 184         }
 185         if (j >= MCFFEC_TOUT_LOOP) {
 186                 printf("TX timeout\n");
 187         }
 188
 189 #ifdef ET_DEBUG
 190         printf("%s[%d] %s: cycles: %d    status: %x  retry cnt: %d\n",
 191                __FILE__, __LINE__, __FUNCTION__, j,
 192                info->txbd[info->txIdx].cbd_sc,
 193                (info->txbd[info->txIdx].cbd_sc & 0x003C) >> 2);
 194 #endif
 195
 196         /* return only status bits */
 197         rc = (info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS);
 198         info->txIdx = (info->txIdx + 1) % TX_BUF_CNT;
 199
 200         return rc;
 201 }
 202
 203 int fec_recv(struct eth_device *dev)
 204 {
 205         struct fec_info_s *info = dev->priv;
 206         volatile fec_t *fecp = (fec_t *) (info->iobase);
 207         int length;
 208
 209         for (;;) {
 210 #ifdef CFG_UNIFY_CACHE
 211                 icache_invalid();
 212 #endif
 213                 /* section 16.9.23.2 */
 214                 if (info->rxbd[info->rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
 215                         length = -1;
 216                         break;  /* nothing received - leave for() loop */
 217                 }
 218
 219                 length = info->rxbd[info->rxIdx].cbd_datlen;
 220
 221                 if (info->rxbd[info->rxIdx].cbd_sc & 0x003f) {
 222                         printf("%s[%d] err: %x\n",
 223                                __FUNCTION__, __LINE__,
 224                                info->rxbd[info->rxIdx].cbd_sc);
 225 #ifdef ET_DEBUG
 226                         printf("%s[%d] err: %x\n",
 227                                __FUNCTION__, __LINE__,
 228                                info->rxbd[info->rxIdx].cbd_sc);
 229 #endif
 230                 } else {
 231
 232                         length -= 4;
 233                         /* Pass the packet up to the protocol layers. */
 234                         NetReceive(NetRxPackets[info->rxIdx], length);
 235
 236                         fecp->eir |= FEC_EIR_RXF;
 237                 }
 238
 239                 /* Give the buffer back to the FEC. */
 240                 info->rxbd[info->rxIdx].cbd_datlen = 0;
 241
 242                 /* wrap around buffer index when necessary */
 243                 if (info->rxIdx == LAST_PKTBUFSRX) {
 244                         info->rxbd[PKTBUFSRX - 1].cbd_sc = BD_ENET_RX_W_E;
 245                         info->rxIdx = 0;
 246                 } else {
 247                         info->rxbd[info->rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
 248                         info->rxIdx++;
 249                 }
 250
 251                 /* Try to fill Buffer Descriptors */
 252                 fecp->rdar = 0x01000000;        /* Descriptor polling active    */
 253         }
 254
 255         return length;
 256 }
 257
 258 #ifdef ET_DEBUG
 259 void dbgFecRegs(struct eth_device *dev)
 260 {
 261         struct fec_info_s *info = dev->priv;
 262         volatile fec_t *fecp = (fec_t *) (info->iobase);
 263
 264         printf("=====\n");
 265         printf("ievent       %x - %x\n", (int)&fecp->eir, fecp->eir);
 266         printf("imask        %x - %x\n", (int)&fecp->eimr, fecp->eimr);
 267         printf("r_des_active %x - %x\n", (int)&fecp->rdar, fecp->rdar);
 268         printf("x_des_active %x - %x\n", (int)&fecp->tdar, fecp->tdar);
 269         printf("ecntrl       %x - %x\n", (int)&fecp->ecr, fecp->ecr);
 270         printf("mii_mframe   %x - %x\n", (int)&fecp->mmfr, fecp->mmfr);
 271         printf("mii_speed    %x - %x\n", (int)&fecp->mscr, fecp->mscr);
 272         printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc);
 273         printf("r_cntrl      %x - %x\n", (int)&fecp->rcr, fecp->rcr);
 274         printf("x_cntrl      %x - %x\n", (int)&fecp->tcr, fecp->tcr);
 275         printf("padr_l       %x - %x\n", (int)&fecp->palr, fecp->palr);
 276         printf("padr_u       %x - %x\n", (int)&fecp->paur, fecp->paur);
 277         printf("op_pause     %x - %x\n", (int)&fecp->opd, fecp->opd);
 278         printf("iadr_u       %x - %x\n", (int)&fecp->iaur, fecp->iaur);
 279         printf("iadr_l       %x - %x\n", (int)&fecp->ialr, fecp->ialr);
 280         printf("gadr_u       %x - %x\n", (int)&fecp->gaur, fecp->gaur);
 281         printf("gadr_l       %x - %x\n", (int)&fecp->galr, fecp->galr);
 282         printf("x_wmrk       %x - %x\n", (int)&fecp->tfwr, fecp->tfwr);
 283         printf("r_bound      %x - %x\n", (int)&fecp->frbr, fecp->frbr);
 284         printf("r_fstart     %x - %x\n", (int)&fecp->frsr, fecp->frsr);
 285         printf("r_drng       %x - %x\n", (int)&fecp->erdsr, fecp->erdsr);
 286         printf("x_drng       %x - %x\n", (int)&fecp->etdsr, fecp->etdsr);
 287         printf("r_bufsz      %x - %x\n", (int)&fecp->emrbr, fecp->emrbr);
 288
 289         printf("\n");
 290         printf("rmon_t_drop        %x - %x\n", (int)&fecp->rmon_t_drop,
 291                fecp->rmon_t_drop);
 292         printf("rmon_t_packets     %x - %x\n", (int)&fecp->rmon_t_packets,
 293                fecp->rmon_t_packets);
 294         printf("rmon_t_bc_pkt      %x - %x\n", (int)&fecp->rmon_t_bc_pkt,
 295                fecp->rmon_t_bc_pkt);
 296         printf("rmon_t_mc_pkt      %x - %x\n", (int)&fecp->rmon_t_mc_pkt,
 297                fecp->rmon_t_mc_pkt);
 298         printf("rmon_t_crc_align   %x - %x\n", (int)&fecp->rmon_t_crc_align,
 299                fecp->rmon_t_crc_align);
 300         printf("rmon_t_undersize   %x - %x\n", (int)&fecp->rmon_t_undersize,
 301                fecp->rmon_t_undersize);
 302         printf("rmon_t_oversize    %x - %x\n", (int)&fecp->rmon_t_oversize,
 303                fecp->rmon_t_oversize);
 304         printf("rmon_t_frag        %x - %x\n", (int)&fecp->rmon_t_frag,
 305                fecp->rmon_t_frag);
 306         printf("rmon_t_jab         %x - %x\n", (int)&fecp->rmon_t_jab,
 307                fecp->rmon_t_jab);
 308         printf("rmon_t_col         %x - %x\n", (int)&fecp->rmon_t_col,
 309                fecp->rmon_t_col);
 310         printf("rmon_t_p64         %x - %x\n", (int)&fecp->rmon_t_p64,
 311                fecp->rmon_t_p64);
 312         printf("rmon_t_p65to127    %x - %x\n", (int)&fecp->rmon_t_p65to127,
 313                fecp->rmon_t_p65to127);
 314         printf("rmon_t_p128to255   %x - %x\n", (int)&fecp->rmon_t_p128to255,
 315                fecp->rmon_t_p128to255);
 316         printf("rmon_t_p256to511   %x - %x\n", (int)&fecp->rmon_t_p256to511,
 317                fecp->rmon_t_p256to511);
 318         printf("rmon_t_p512to1023  %x - %x\n", (int)&fecp->rmon_t_p512to1023,
 319                fecp->rmon_t_p512to1023);
 320         printf("rmon_t_p1024to2047 %x - %x\n", (int)&fecp->rmon_t_p1024to2047,
 321                fecp->rmon_t_p1024to2047);
 322         printf("rmon_t_p_gte2048   %x - %x\n", (int)&fecp->rmon_t_p_gte2048,
 323                fecp->rmon_t_p_gte2048);
 324         printf("rmon_t_octets      %x - %x\n", (int)&fecp->rmon_t_octets,
 325                fecp->rmon_t_octets);
 326
 327         printf("\n");
 328         printf("ieee_t_drop      %x - %x\n", (int)&fecp->ieee_t_drop,
 329                fecp->ieee_t_drop);
 330         printf("ieee_t_frame_ok  %x - %x\n", (int)&fecp->ieee_t_frame_ok,
 331                fecp->ieee_t_frame_ok);
 332         printf("ieee_t_1col      %x - %x\n", (int)&fecp->ieee_t_1col,
 333                fecp->ieee_t_1col);
 334         printf("ieee_t_mcol      %x - %x\n", (int)&fecp->ieee_t_mcol,
 335                fecp->ieee_t_mcol);
 336         printf("ieee_t_def       %x - %x\n", (int)&fecp->ieee_t_def,
 337                fecp->ieee_t_def);
 338         printf("ieee_t_lcol      %x - %x\n", (int)&fecp->ieee_t_lcol,
 339                fecp->ieee_t_lcol);
 340         printf("ieee_t_excol     %x - %x\n", (int)&fecp->ieee_t_excol,
 341                fecp->ieee_t_excol);
 342         printf("ieee_t_macerr    %x - %x\n", (int)&fecp->ieee_t_macerr,
 343                fecp->ieee_t_macerr);
 344         printf("ieee_t_cserr     %x - %x\n", (int)&fecp->ieee_t_cserr,
 345                fecp->ieee_t_cserr);
 346         printf("ieee_t_sqe       %x - %x\n", (int)&fecp->ieee_t_sqe,
 347                fecp->ieee_t_sqe);
 348         printf("ieee_t_fdxfc     %x - %x\n", (int)&fecp->ieee_t_fdxfc,
 349                fecp->ieee_t_fdxfc);
 350         printf("ieee_t_octets_ok %x - %x\n", (int)&fecp->ieee_t_octets_ok,
 351                fecp->ieee_t_octets_ok);
 352
 353         printf("\n");
 354         printf("rmon_r_drop        %x - %x\n", (int)&fecp->rmon_r_drop,
 355                fecp->rmon_r_drop);
 356         printf("rmon_r_packets     %x - %x\n", (int)&fecp->rmon_r_packets,
 357                fecp->rmon_r_packets);
 358         printf("rmon_r_bc_pkt      %x - %x\n", (int)&fecp->rmon_r_bc_pkt,
 359                fecp->rmon_r_bc_pkt);
 360         printf("rmon_r_mc_pkt      %x - %x\n", (int)&fecp->rmon_r_mc_pkt,
 361                fecp->rmon_r_mc_pkt);
 362         printf("rmon_r_crc_align   %x - %x\n", (int)&fecp->rmon_r_crc_align,
 363                fecp->rmon_r_crc_align);
 364         printf("rmon_r_undersize   %x - %x\n", (int)&fecp->rmon_r_undersize,
 365                fecp->rmon_r_undersize);
 366         printf("rmon_r_oversize    %x - %x\n", (int)&fecp->rmon_r_oversize,
 367                fecp->rmon_r_oversize);
 368         printf("rmon_r_frag        %x - %x\n", (int)&fecp->rmon_r_frag,
 369                fecp->rmon_r_frag);
 370         printf("rmon_r_jab         %x - %x\n", (int)&fecp->rmon_r_jab,
 371                fecp->rmon_r_jab);
 372         printf("rmon_r_p64         %x - %x\n", (int)&fecp->rmon_r_p64,
 373                fecp->rmon_r_p64);
 374         printf("rmon_r_p65to127    %x - %x\n", (int)&fecp->rmon_r_p65to127,
 375                fecp->rmon_r_p65to127);
 376         printf("rmon_r_p128to255   %x - %x\n", (int)&fecp->rmon_r_p128to255,
 377                fecp->rmon_r_p128to255);
 378         printf("rmon_r_p256to511   %x - %x\n", (int)&fecp->rmon_r_p256to511,
 379                fecp->rmon_r_p256to511);
 380         printf("rmon_r_p512to1023  %x - %x\n", (int)&fecp->rmon_r_p512to1023,
 381                fecp->rmon_r_p512to1023);
 382         printf("rmon_r_p1024to2047 %x - %x\n", (int)&fecp->rmon_r_p1024to2047,
 383                fecp->rmon_r_p1024to2047);
 384         printf("rmon_r_p_gte2048   %x - %x\n", (int)&fecp->rmon_r_p_gte2048,
 385                fecp->rmon_r_p_gte2048);
 386         printf("rmon_r_octets      %x - %x\n", (int)&fecp->rmon_r_octets,
 387                fecp->rmon_r_octets);
 388
 389         printf("\n");
 390         printf("ieee_r_drop      %x - %x\n", (int)&fecp->ieee_r_drop,
 391                fecp->ieee_r_drop);
 392         printf("ieee_r_frame_ok  %x - %x\n", (int)&fecp->ieee_r_frame_ok,
 393                fecp->ieee_r_frame_ok);
 394         printf("ieee_r_crc       %x - %x\n", (int)&fecp->ieee_r_crc,
 395                fecp->ieee_r_crc);
 396         printf("ieee_r_align     %x - %x\n", (int)&fecp->ieee_r_align,
 397                fecp->ieee_r_align);
 398         printf("ieee_r_macerr    %x - %x\n", (int)&fecp->ieee_r_macerr,
 399                fecp->ieee_r_macerr);
 400         printf("ieee_r_fdxfc     %x - %x\n", (int)&fecp->ieee_r_fdxfc,
 401                fecp->ieee_r_fdxfc);
 402         printf("ieee_r_octets_ok %x - %x\n", (int)&fecp->ieee_r_octets_ok,
 403                fecp->ieee_r_octets_ok);
 404
 405         printf("\n\n\n");
 406 }
 407 #endif
 408
 409 int fec_init(struct eth_device *dev, bd_t * bd)
 410 {
 411         struct fec_info_s *info = dev->priv;
 412         volatile fec_t *fecp = (fec_t *) (info->iobase);
 413         int i;
 414         u8 *ea = NULL;
 415
 416         fecpin_setclear(dev, 1);
 417
 418         fec_reset(dev);
 419
 420 #if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \
 421         defined (CFG_DISCOVER_PHY)
 422
 423         mii_init();
 424
 425         setFecDuplexSpeed(fecp, bd, info->dup_spd);
 426 #else
 427 #ifndef CFG_DISCOVER_PHY
 428         setFecDuplexSpeed(fecp, bd, (FECDUPLEX << 16) | FECSPEED);
 429 #endif                          /* ifndef CFG_DISCOVER_PHY */
 430 #endif                          /* CONFIG_CMD_MII || CONFIG_MII */
 431
 432         /* We use strictly polling mode only */
 433         fecp->eimr = 0;
 434
 435         /* Clear any pending interrupt */
 436         fecp->eir = 0xffffffff;
 437
 438         /* Set station address   */
 439         if ((u32) fecp == CFG_FEC0_IOBASE) {
 440 #ifdef CFG_FEC1_IOBASE
 441                 volatile fec_t *fecp1 = (fec_t *) (CFG_FEC1_IOBASE);
 442                 ea = &bd->bi_enet1addr[0];
 443                 fecp1->palr =
 444                     (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
 445                 fecp1->paur = (ea[4] << 24) | (ea[5] << 16);
 446 #endif
 447                 ea = &bd->bi_enetaddr[0];
 448                 fecp->palr =
 449                     (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
 450                 fecp->paur = (ea[4] << 24) | (ea[5] << 16);
 451         } else {
 452 #ifdef CFG_FEC0_IOBASE
 453                 volatile fec_t *fecp0 = (fec_t *) (CFG_FEC0_IOBASE);
 454                 ea = &bd->bi_enetaddr[0];
 455                 fecp0->palr =
 456                     (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
 457                 fecp0->paur = (ea[4] << 24) | (ea[5] << 16);
 458 #endif
 459 #ifdef CFG_FEC1_IOBASE
 460                 ea = &bd->bi_enet1addr[0];
 461                 fecp->palr =
 462                     (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
 463                 fecp->paur = (ea[4] << 24) | (ea[5] << 16);
 464 #endif
 465         }
 466
 467         /* Clear unicast address hash table */
 468         fecp->iaur = 0;
 469         fecp->ialr = 0;
 470
 471         /* Clear multicast address hash table */
 472         fecp->gaur = 0;
 473         fecp->galr = 0;
 474
 475         /* Set maximum receive buffer size. */
 476         fecp->emrbr = PKT_MAXBLR_SIZE;
 477
 478         /*
 479          * Setup Buffers and Buffer Desriptors
 480          */
 481         info->rxIdx = 0;
 482         info->txIdx = 0;
 483
 484         /*
 485          * Setup Receiver Buffer Descriptors (13.14.24.18)
 486          * Settings:
 487          *     Empty, Wrap
 488          */
 489         for (i = 0; i < PKTBUFSRX; i++) {
 490                 info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
 491                 info->rxbd[i].cbd_datlen = 0;   /* Reset */
 492                 info->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
 493         }
 494         info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
 495
 496         /*
 497          * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
 498          * Settings:
 499          *    Last, Tx CRC
 500          */
 501         for (i = 0; i < TX_BUF_CNT; i++) {
 502                 info->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
 503                 info->txbd[i].cbd_datlen = 0;   /* Reset */
 504                 info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]);
 505         }
 506         info->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
 507
 508         /* Set receive and transmit descriptor base */
 509         fecp->erdsr = (unsigned int)(&info->rxbd[0]);
 510         fecp->etdsr = (unsigned int)(&info->txbd[0]);
 511
 512         /* Now enable the transmit and receive processing */
 513         fecp->ecr |= FEC_ECR_ETHER_EN;
 514
 515         /* And last, try to fill Rx Buffer Descriptors */
 516         fecp->rdar = 0x01000000;        /* Descriptor polling active    */
 517
 518         return 1;
 519 }
 520
 521 void fec_reset(struct eth_device *dev)
 522 {
 523         struct fec_info_s *info = dev->priv;
 524         volatile fec_t *fecp = (fec_t *) (info->iobase);
 525         int i;
 526
 527         fecp->ecr = FEC_ECR_RESET;
 528         for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
 529                 udelay(1);
 530         }
 531         if (i == FEC_RESET_DELAY) {
 532                 printf("FEC_RESET_DELAY timeout\n");
 533         }
 534 }
 535
 536 void fec_halt(struct eth_device *dev)
 537 {
 538         struct fec_info_s *info = dev->priv;
 539
 540         fec_reset(dev);
 541
 542         fecpin_setclear(dev, 0);
 543
 544         info->rxIdx = info->txIdx = 0;
 545         memset(info->rxbd, 0, PKTBUFSRX * sizeof(cbd_t));
 546         memset(info->txbd, 0, TX_BUF_CNT * sizeof(cbd_t));
 547         memset(info->txbuf, 0, DBUF_LENGTH);
 548 }
 549
 550 int mcffec_initialize(bd_t * bis)
 551 {
 552         struct eth_device *dev;
 553         int i;
 554
 555         for (i = 0; i < sizeof(fec_info) / sizeof(fec_info[0]); i++) {
 556
 557                 dev =
 558                     (struct eth_device *)memalign(CFG_CACHELINE_SIZE,
 559                                                   sizeof *dev);
 560                 if (dev == NULL)
 561                         hang();
 562
 563                 memset(dev, 0, sizeof(*dev));
 564
 565                 sprintf(dev->name, "FEC%d", fec_info[i].index);
 566
 567                 dev->priv = &fec_info[i];
 568                 dev->init = fec_init;
 569                 dev->halt = fec_halt;
 570                 dev->send = fec_send;
 571                 dev->recv = fec_recv;
 572
 573                 /* setup Receive and Transmit buffer descriptor */
 574                 fec_info[i].rxbd =
 575                     (cbd_t *) memalign(CFG_CACHELINE_SIZE,
 576                                        (PKTBUFSRX * sizeof(cbd_t)));
 577                 fec_info[i].txbd =
 578                     (cbd_t *) memalign(CFG_CACHELINE_SIZE,
 579                                        (TX_BUF_CNT * sizeof(cbd_t)));
 580                 fec_info[i].txbuf =
 581                     (char *)memalign(CFG_CACHELINE_SIZE, DBUF_LENGTH);
 582 #ifdef ET_DEBUG
 583                 printf("rxbd %x txbd %x\n",
 584                        (int)fec_info[i].rxbd, (int)fec_info[i].txbd);
 585 #endif
 586
 587                 fec_info[i].phy_name = (char *)memalign(CFG_CACHELINE_SIZE, 32);
 588
 589                 eth_register(dev);
 590
 591 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 592                 miiphy_register(dev->name,
 593                                 mcffec_miiphy_read, mcffec_miiphy_write);
 594 #endif
 595         }
 596
 597         /* default speed */
 598         bis->bi_ethspeed = 10;
 599
 600         return 1;
 601 }
 602
 603 #endif                          /* CONFIG_CMD_NET, FEC_ENET & NET_MULTI */
 604 #endif                          /* CONFIG_MCFFEC */