drivers/qe/uec.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2006-2011 Freescale Semiconductor, Inc.
   4  *
   5  * Dave Liu <[email protected]>
   6  */
   7
   8 #include <common.h>
   9 #include <log.h>
  10 #include <net.h>
  11 #include <malloc.h>
  12 #include <linux/delay.h>
  13 #include <linux/errno.h>
  14 #include <asm/io.h>
  15 #include <linux/immap_qe.h>
  16 #include "uccf.h"
  17 #include "uec.h"
  18 #include "uec_phy.h"
  19 #include "miiphy.h"
  20 #include <fsl_qe.h>
  21 #include <phy.h>
  22
  23 #if !defined(CONFIG_DM_ETH)
  24 /* Default UTBIPAR SMI address */
  25 #ifndef CONFIG_UTBIPAR_INIT_TBIPA
  26 #define CONFIG_UTBIPAR_INIT_TBIPA 0x1F
  27 #endif
  28
  29 static struct uec_inf uec_info[] = {
  30 #ifdef CONFIG_UEC_ETH1
  31         STD_UEC_INFO(1),        /* UEC1 */
  32 #endif
  33 #ifdef CONFIG_UEC_ETH2
  34         STD_UEC_INFO(2),        /* UEC2 */
  35 #endif
  36 #ifdef CONFIG_UEC_ETH3
  37         STD_UEC_INFO(3),        /* UEC3 */
  38 #endif
  39 #ifdef CONFIG_UEC_ETH4
  40         STD_UEC_INFO(4),        /* UEC4 */
  41 #endif
  42 #ifdef CONFIG_UEC_ETH5
  43         STD_UEC_INFO(5),        /* UEC5 */
  44 #endif
  45 #ifdef CONFIG_UEC_ETH6
  46         STD_UEC_INFO(6),        /* UEC6 */
  47 #endif
  48 #ifdef CONFIG_UEC_ETH7
  49         STD_UEC_INFO(7),        /* UEC7 */
  50 #endif
  51 #ifdef CONFIG_UEC_ETH8
  52         STD_UEC_INFO(8),        /* UEC8 */
  53 #endif
  54 };
  55
  56 #define MAXCONTROLLERS  (8)
  57
  58 static struct eth_device *devlist[MAXCONTROLLERS];
  59
  60 static int uec_mac_enable(struct uec_priv *uec, comm_dir_e mode)
  61 {
  62         uec_t           *uec_regs;
  63         u32             maccfg1;
  64
  65         if (!uec) {
  66                 printf("%s: uec not initial\n", __func__);
  67                 return -EINVAL;
  68         }
  69         uec_regs = uec->uec_regs;
  70
  71         maccfg1 = in_be32(&uec_regs->maccfg1);
  72
  73         if (mode & COMM_DIR_TX) {
  74                 maccfg1 |= MACCFG1_ENABLE_TX;
  75                 out_be32(&uec_regs->maccfg1, maccfg1);
  76                 uec->mac_tx_enabled = 1;
  77         }
  78
  79         if (mode & COMM_DIR_RX) {
  80                 maccfg1 |= MACCFG1_ENABLE_RX;
  81                 out_be32(&uec_regs->maccfg1, maccfg1);
  82                 uec->mac_rx_enabled = 1;
  83         }
  84
  85         return 0;
  86 }
  87
  88 static int uec_mac_disable(struct uec_priv *uec, comm_dir_e mode)
  89 {
  90         uec_t           *uec_regs;
  91         u32             maccfg1;
  92
  93         if (!uec) {
  94                 printf("%s: uec not initial\n", __func__);
  95                 return -EINVAL;
  96         }
  97         uec_regs = uec->uec_regs;
  98
  99         maccfg1 = in_be32(&uec_regs->maccfg1);
 100
 101         if (mode & COMM_DIR_TX) {
 102                 maccfg1 &= ~MACCFG1_ENABLE_TX;
 103                 out_be32(&uec_regs->maccfg1, maccfg1);
 104                 uec->mac_tx_enabled = 0;
 105         }
 106
 107         if (mode & COMM_DIR_RX) {
 108                 maccfg1 &= ~MACCFG1_ENABLE_RX;
 109                 out_be32(&uec_regs->maccfg1, maccfg1);
 110                 uec->mac_rx_enabled = 0;
 111         }
 112
 113         return 0;
 114 }
 115
 116 static int uec_graceful_stop_tx(struct uec_priv *uec)
 117 {
 118         ucc_fast_t              *uf_regs;
 119         u32                     cecr_subblock;
 120         u32                     ucce;
 121
 122         if (!uec || !uec->uccf) {
 123                 printf("%s: No handle passed.\n", __func__);
 124                 return -EINVAL;
 125         }
 126
 127         uf_regs = uec->uccf->uf_regs;
 128
 129         /* Clear the grace stop event */
 130         out_be32(&uf_regs->ucce, UCCE_GRA);
 131
 132         /* Issue host command */
 133         cecr_subblock =
 134                  ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
 135         qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
 136                      (u8)QE_CR_PROTOCOL_ETHERNET, 0);
 137
 138         /* Wait for command to complete */
 139         do {
 140                 ucce = in_be32(&uf_regs->ucce);
 141         } while (!(ucce & UCCE_GRA));
 142
 143         uec->grace_stopped_tx = 1;
 144
 145         return 0;
 146 }
 147
 148 static int uec_graceful_stop_rx(struct uec_priv *uec)
 149 {
 150         u32             cecr_subblock;
 151         u8              ack;
 152
 153         if (!uec) {
 154                 printf("%s: No handle passed.\n", __func__);
 155                 return -EINVAL;
 156         }
 157
 158         if (!uec->p_rx_glbl_pram) {
 159                 printf("%s: No init rx global parameter\n", __func__);
 160                 return -EINVAL;
 161         }
 162
 163         /* Clear acknowledge bit */
 164         ack = uec->p_rx_glbl_pram->rxgstpack;
 165         ack &= ~GRACEFUL_STOP_ACKNOWLEDGE_RX;
 166         uec->p_rx_glbl_pram->rxgstpack = ack;
 167
 168         /* Keep issuing cmd and checking ack bit until it is asserted */
 169         do {
 170                 /* Issue host command */
 171                 cecr_subblock =
 172                  ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
 173                 qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
 174                              (u8)QE_CR_PROTOCOL_ETHERNET, 0);
 175                 ack = uec->p_rx_glbl_pram->rxgstpack;
 176         } while (!(ack & GRACEFUL_STOP_ACKNOWLEDGE_RX));
 177
 178         uec->grace_stopped_rx = 1;
 179
 180         return 0;
 181 }
 182
 183 static int uec_restart_tx(struct uec_priv *uec)
 184 {
 185         u32             cecr_subblock;
 186
 187         if (!uec || !uec->uec_info) {
 188                 printf("%s: No handle passed.\n", __func__);
 189                 return -EINVAL;
 190         }
 191
 192         cecr_subblock =
 193          ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
 194         qe_issue_cmd(QE_RESTART_TX, cecr_subblock,
 195                      (u8)QE_CR_PROTOCOL_ETHERNET, 0);
 196
 197         uec->grace_stopped_tx = 0;
 198
 199         return 0;
 200 }
 201
 202 static int uec_restart_rx(struct uec_priv *uec)
 203 {
 204         u32             cecr_subblock;
 205
 206         if (!uec || !uec->uec_info) {
 207                 printf("%s: No handle passed.\n", __func__);
 208                 return -EINVAL;
 209         }
 210
 211         cecr_subblock =
 212          ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
 213         qe_issue_cmd(QE_RESTART_RX, cecr_subblock,
 214                      (u8)QE_CR_PROTOCOL_ETHERNET, 0);
 215
 216         uec->grace_stopped_rx = 0;
 217
 218         return 0;
 219 }
 220
 221 static int uec_open(struct uec_priv *uec, comm_dir_e mode)
 222 {
 223         struct ucc_fast_priv    *uccf;
 224
 225         if (!uec || !uec->uccf) {
 226                 printf("%s: No handle passed.\n", __func__);
 227                 return -EINVAL;
 228         }
 229         uccf = uec->uccf;
 230
 231         /* check if the UCC number is in range. */
 232         if (uec->uec_info->uf_info.ucc_num >= UCC_MAX_NUM) {
 233                 printf("%s: ucc_num out of range.\n", __func__);
 234                 return -EINVAL;
 235         }
 236
 237         /* Enable MAC */
 238         uec_mac_enable(uec, mode);
 239
 240         /* Enable UCC fast */
 241         ucc_fast_enable(uccf, mode);
 242
 243         /* RISC microcode start */
 244         if ((mode & COMM_DIR_TX) && uec->grace_stopped_tx)
 245                 uec_restart_tx(uec);
 246         if ((mode & COMM_DIR_RX) && uec->grace_stopped_rx)
 247                 uec_restart_rx(uec);
 248
 249         return 0;
 250 }
 251
 252 static int uec_stop(struct uec_priv *uec, comm_dir_e mode)
 253 {
 254         if (!uec || !uec->uccf) {
 255                 printf("%s: No handle passed.\n", __func__);
 256                 return -EINVAL;
 257         }
 258
 259         /* check if the UCC number is in range. */
 260         if (uec->uec_info->uf_info.ucc_num >= UCC_MAX_NUM) {
 261                 printf("%s: ucc_num out of range.\n", __func__);
 262                 return -EINVAL;
 263         }
 264         /* Stop any transmissions */
 265         if ((mode & COMM_DIR_TX) && !uec->grace_stopped_tx)
 266                 uec_graceful_stop_tx(uec);
 267
 268         /* Stop any receptions */
 269         if ((mode & COMM_DIR_RX) && !uec->grace_stopped_rx)
 270                 uec_graceful_stop_rx(uec);
 271
 272         /* Disable the UCC fast */
 273         ucc_fast_disable(uec->uccf, mode);
 274
 275         /* Disable the MAC */
 276         uec_mac_disable(uec, mode);
 277
 278         return 0;
 279 }
 280
 281 static int uec_set_mac_duplex(struct uec_priv *uec, int duplex)
 282 {
 283         uec_t           *uec_regs;
 284         u32             maccfg2;
 285
 286         if (!uec) {
 287                 printf("%s: uec not initial\n", __func__);
 288                 return -EINVAL;
 289         }
 290         uec_regs = uec->uec_regs;
 291
 292         if (duplex == DUPLEX_HALF) {
 293                 maccfg2 = in_be32(&uec_regs->maccfg2);
 294                 maccfg2 &= ~MACCFG2_FDX;
 295                 out_be32(&uec_regs->maccfg2, maccfg2);
 296         }
 297
 298         if (duplex == DUPLEX_FULL) {
 299                 maccfg2 = in_be32(&uec_regs->maccfg2);
 300                 maccfg2 |= MACCFG2_FDX;
 301                 out_be32(&uec_regs->maccfg2, maccfg2);
 302         }
 303
 304         return 0;
 305 }
 306
 307 static int uec_set_mac_if_mode(struct uec_priv *uec,
 308                                phy_interface_t if_mode, int speed)
 309 {
 310         phy_interface_t         enet_if_mode;
 311         uec_t                   *uec_regs;
 312         u32                     upsmr;
 313         u32                     maccfg2;
 314
 315         if (!uec) {
 316                 printf("%s: uec not initial\n", __func__);
 317                 return -EINVAL;
 318         }
 319
 320         uec_regs = uec->uec_regs;
 321         enet_if_mode = if_mode;
 322
 323         maccfg2 = in_be32(&uec_regs->maccfg2);
 324         maccfg2 &= ~MACCFG2_INTERFACE_MODE_MASK;
 325
 326         upsmr = in_be32(&uec->uccf->uf_regs->upsmr);
 327         upsmr &= ~(UPSMR_RPM | UPSMR_TBIM | UPSMR_R10M | UPSMR_RMM);
 328
 329         switch (speed) {
 330         case SPEED_10:
 331                 maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
 332                 switch (enet_if_mode) {
 333                 case PHY_INTERFACE_MODE_MII:
 334                         break;
 335                 case PHY_INTERFACE_MODE_RGMII:
 336                         upsmr |= (UPSMR_RPM | UPSMR_R10M);
 337                         break;
 338                 case PHY_INTERFACE_MODE_RMII:
 339                         upsmr |= (UPSMR_R10M | UPSMR_RMM);
 340                         break;
 341                 default:
 342                         return -EINVAL;
 343                 }
 344                 break;
 345         case SPEED_100:
 346                 maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
 347                 switch (enet_if_mode) {
 348                 case PHY_INTERFACE_MODE_MII:
 349                         break;
 350                 case PHY_INTERFACE_MODE_RGMII:
 351                         upsmr |= UPSMR_RPM;
 352                         break;
 353                 case PHY_INTERFACE_MODE_RMII:
 354                         upsmr |= UPSMR_RMM;
 355                         break;
 356                 default:
 357                         return -EINVAL;
 358                 }
 359                 break;
 360         case SPEED_1000:
 361                 maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
 362                 switch (enet_if_mode) {
 363                 case PHY_INTERFACE_MODE_GMII:
 364                         break;
 365                 case PHY_INTERFACE_MODE_TBI:
 366                         upsmr |= UPSMR_TBIM;
 367                         break;
 368                 case PHY_INTERFACE_MODE_RTBI:
 369                         upsmr |= (UPSMR_RPM | UPSMR_TBIM);
 370                         break;
 371                 case PHY_INTERFACE_MODE_RGMII_RXID:
 372                 case PHY_INTERFACE_MODE_RGMII_TXID:
 373                 case PHY_INTERFACE_MODE_RGMII_ID:
 374                 case PHY_INTERFACE_MODE_RGMII:
 375                         upsmr |= UPSMR_RPM;
 376                         break;
 377                 case PHY_INTERFACE_MODE_SGMII:
 378                         upsmr |= UPSMR_SGMM;
 379                         break;
 380                 default:
 381                         return -EINVAL;
 382                 }
 383                 break;
 384         default:
 385                 return -EINVAL;
 386         }
 387
 388         out_be32(&uec_regs->maccfg2, maccfg2);
 389         out_be32(&uec->uccf->uf_regs->upsmr, upsmr);
 390
 391         return 0;
 392 }
 393
 394 static int init_mii_management_configuration(uec_mii_t *uec_mii_regs)
 395 {
 396         uint            timeout = 0x1000;
 397         u32             miimcfg = 0;
 398
 399         miimcfg = in_be32(&uec_mii_regs->miimcfg);
 400         miimcfg |= MIIMCFG_MNGMNT_CLC_DIV_INIT_VALUE;
 401         out_be32(&uec_mii_regs->miimcfg, miimcfg);
 402
 403         /* Wait until the bus is free */
 404         while ((in_be32(&uec_mii_regs->miimcfg) & MIIMIND_BUSY) && timeout--)
 405                 ;
 406         if (timeout <= 0) {
 407                 printf("%s: The MII Bus is stuck!", __func__);
 408                 return -ETIMEDOUT;
 409         }
 410
 411         return 0;
 412 }
 413
 414 static int init_phy(struct eth_device *dev)
 415 {
 416         struct uec_priv         *uec;
 417         uec_mii_t               *umii_regs;
 418         struct uec_mii_info     *mii_info;
 419         struct phy_info         *curphy;
 420         int                     err;
 421
 422         uec = (struct uec_priv *)dev->priv;
 423         umii_regs = uec->uec_mii_regs;
 424
 425         uec->oldlink = 0;
 426         uec->oldspeed = 0;
 427         uec->oldduplex = -1;
 428
 429         mii_info = malloc(sizeof(*mii_info));
 430         if (!mii_info) {
 431                 printf("%s: Could not allocate mii_info", dev->name);
 432                 return -ENOMEM;
 433         }
 434         memset(mii_info, 0, sizeof(*mii_info));
 435
 436         if (uec->uec_info->uf_info.eth_type == GIGA_ETH)
 437                 mii_info->speed = SPEED_1000;
 438         else
 439                 mii_info->speed = SPEED_100;
 440
 441         mii_info->duplex = DUPLEX_FULL;
 442         mii_info->pause = 0;
 443         mii_info->link = 1;
 444
 445         mii_info->advertising = (ADVERTISED_10baseT_Half |
 446                                 ADVERTISED_10baseT_Full |
 447                                 ADVERTISED_100baseT_Half |
 448                                 ADVERTISED_100baseT_Full |
 449                                 ADVERTISED_1000baseT_Full);
 450         mii_info->autoneg = 1;
 451         mii_info->mii_id = uec->uec_info->phy_address;
 452         mii_info->dev = dev;
 453
 454         mii_info->mdio_read = &uec_read_phy_reg;
 455         mii_info->mdio_write = &uec_write_phy_reg;
 456
 457         uec->mii_info = mii_info;
 458
 459         qe_set_mii_clk_src(uec->uec_info->uf_info.ucc_num);
 460
 461         if (init_mii_management_configuration(umii_regs)) {
 462                 printf("%s: The MII Bus is stuck!", dev->name);
 463                 err = -1;
 464                 goto bus_fail;
 465         }
 466
 467         /* get info for this PHY */
 468         curphy = uec_get_phy_info(uec->mii_info);
 469         if (!curphy) {
 470                 printf("%s: No PHY found", dev->name);
 471                 err = -1;
 472                 goto no_phy;
 473         }
 474
 475         mii_info->phyinfo = curphy;
 476
 477         /* Run the commands which initialize the PHY */
 478         if (curphy->init) {
 479                 err = curphy->init(uec->mii_info);
 480                 if (err)
 481                         goto phy_init_fail;
 482         }
 483
 484         return 0;
 485
 486 phy_init_fail:
 487 no_phy:
 488 bus_fail:
 489         free(mii_info);
 490         return err;
 491 }
 492
 493 static void adjust_link(struct eth_device *dev)
 494 {
 495         struct uec_priv         *uec = (struct uec_priv *)dev->priv;
 496         struct uec_mii_info     *mii_info = uec->mii_info;
 497
 498         if (mii_info->link) {
 499                 /*
 500                  * Now we make sure that we can be in full duplex mode.
 501                  * If not, we operate in half-duplex mode.
 502                  */
 503                 if (mii_info->duplex != uec->oldduplex) {
 504                         if (!(mii_info->duplex)) {
 505                                 uec_set_mac_duplex(uec, DUPLEX_HALF);
 506                                 printf("%s: Half Duplex\n", dev->name);
 507                         } else {
 508                                 uec_set_mac_duplex(uec, DUPLEX_FULL);
 509                                 printf("%s: Full Duplex\n", dev->name);
 510                         }
 511                         uec->oldduplex = mii_info->duplex;
 512                 }
 513
 514                 if (mii_info->speed != uec->oldspeed) {
 515                         phy_interface_t mode =
 516                                 uec->uec_info->enet_interface_type;
 517                         if (uec->uec_info->uf_info.eth_type == GIGA_ETH) {
 518                                 switch (mii_info->speed) {
 519                                 case SPEED_1000:
 520                                         break;
 521                                 case SPEED_100:
 522                                         printf("switching to rgmii 100\n");
 523                                         mode = PHY_INTERFACE_MODE_RGMII;
 524                                         break;
 525                                 case SPEED_10:
 526                                         printf("switching to rgmii 10\n");
 527                                         mode = PHY_INTERFACE_MODE_RGMII;
 528                                         break;
 529                                 default:
 530                                         printf("%s: Ack,Speed(%d)is illegal\n",
 531                                                dev->name, mii_info->speed);
 532                                         break;
 533                                 }
 534                         }
 535
 536                         /* change phy */
 537                         change_phy_interface_mode(dev, mode, mii_info->speed);
 538                         /* change the MAC interface mode */
 539                         uec_set_mac_if_mode(uec, mode, mii_info->speed);
 540
 541                         printf("%s: Speed %dBT\n", dev->name, mii_info->speed);
 542                         uec->oldspeed = mii_info->speed;
 543                 }
 544
 545                 if (!uec->oldlink) {
 546                         printf("%s: Link is up\n", dev->name);
 547                         uec->oldlink = 1;
 548                 }
 549
 550         } else { /* if (mii_info->link) */
 551                 if (uec->oldlink) {
 552                         printf("%s: Link is down\n", dev->name);
 553                         uec->oldlink = 0;
 554                         uec->oldspeed = 0;
 555                         uec->oldduplex = -1;
 556                 }
 557         }
 558 }
 559
 560 static void phy_change(struct eth_device *dev)
 561 {
 562         struct uec_priv *uec = (struct uec_priv *)dev->priv;
 563
 564 #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025)
 565         ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 566
 567         /* QE9 and QE12 need to be set for enabling QE MII management signals */
 568         setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE9);
 569         setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE12);
 570 #endif
 571
 572         /* Update the link, speed, duplex */
 573         uec->mii_info->phyinfo->read_status(uec->mii_info);
 574
 575 #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025)
 576         /*
 577          * QE12 is muxed with LBCTL, it needs to be released for enabling
 578          * LBCTL signal for LBC usage.
 579          */
 580         clrbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE12);
 581 #endif
 582
 583         /* Adjust the interface according to speed */
 584         adjust_link(dev);
 585 }
 586
 587 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 588
 589 /*
 590  * Find a device index from the devlist by name
 591  *
 592  * Returns:
 593  *  The index where the device is located, -1 on error
 594  */
 595 static int uec_miiphy_find_dev_by_name(const char *devname)
 596 {
 597         int i;
 598
 599         for (i = 0; i < MAXCONTROLLERS; i++) {
 600                 if (strncmp(devname, devlist[i]->name, strlen(devname)) == 0)
 601                         break;
 602         }
 603
 604         /* If device cannot be found, returns -1 */
 605         if (i == MAXCONTROLLERS) {
 606                 debug("%s: device %s not found in devlist\n", __func__,
 607                       devname);
 608                 i = -1;
 609         }
 610
 611         return i;
 612 }
 613
 614 /*
 615  * Read a MII PHY register.
 616  *
 617  * Returns:
 618  *  0 on success
 619  */
 620 static int uec_miiphy_read(struct mii_dev *bus, int addr, int devad, int reg)
 621 {
 622         unsigned short value = 0;
 623         int devindex = 0;
 624
 625         if (!bus->name) {
 626                 debug("%s: NULL pointer given\n", __func__);
 627         } else {
 628                 devindex = uec_miiphy_find_dev_by_name(bus->name);
 629                 if (devindex >= 0)
 630                         value = uec_read_phy_reg(devlist[devindex], addr, reg);
 631         }
 632         return value;
 633 }
 634
 635 /*
 636  * Write a MII PHY register.
 637  *
 638  * Returns:
 639  *  0 on success
 640  */
 641 static int uec_miiphy_write(struct mii_dev *bus, int addr, int devad, int reg,
 642                             u16 value)
 643 {
 644         int devindex = 0;
 645
 646         if (!bus->name) {
 647                 debug("%s: NULL pointer given\n", __func__);
 648         } else {
 649                 devindex = uec_miiphy_find_dev_by_name(bus->name);
 650                 if (devindex >= 0)
 651                         uec_write_phy_reg(devlist[devindex], addr, reg, value);
 652         }
 653         return 0;
 654 }
 655 #endif
 656
 657 static int uec_set_mac_address(struct uec_priv *uec, u8 *mac_addr)
 658 {
 659         uec_t           *uec_regs;
 660         u32             mac_addr1;
 661         u32             mac_addr2;
 662
 663         if (!uec) {
 664                 printf("%s: uec not initial\n", __func__);
 665                 return -EINVAL;
 666         }
 667
 668         uec_regs = uec->uec_regs;
 669
 670         /*
 671          * if a station address of 0x12345678ABCD, perform a write to
 672          * MACSTNADDR1 of 0xCDAB7856,
 673          * MACSTNADDR2 of 0x34120000
 674          */
 675
 676         mac_addr1 = (mac_addr[5] << 24) | (mac_addr[4] << 16) |
 677                         (mac_addr[3] << 8)  | (mac_addr[2]);
 678         out_be32(&uec_regs->macstnaddr1, mac_addr1);
 679
 680         mac_addr2 = ((mac_addr[1] << 24) | (mac_addr[0] << 16)) & 0xffff0000;
 681         out_be32(&uec_regs->macstnaddr2, mac_addr2);
 682
 683         return 0;
 684 }
 685
 686 static int uec_convert_threads_num(enum uec_num_of_threads threads_num,
 687                                    int *threads_num_ret)
 688 {
 689         int     num_threads_numerica;
 690
 691         switch (threads_num) {
 692         case UEC_NUM_OF_THREADS_1:
 693                 num_threads_numerica = 1;
 694                 break;
 695         case UEC_NUM_OF_THREADS_2:
 696                 num_threads_numerica = 2;
 697                 break;
 698         case UEC_NUM_OF_THREADS_4:
 699                 num_threads_numerica = 4;
 700                 break;
 701         case UEC_NUM_OF_THREADS_6:
 702                 num_threads_numerica = 6;
 703                 break;
 704         case UEC_NUM_OF_THREADS_8:
 705                 num_threads_numerica = 8;
 706                 break;
 707         default:
 708                 printf("%s: Bad number of threads value.",
 709                        __func__);
 710                 return -EINVAL;
 711         }
 712
 713         *threads_num_ret = num_threads_numerica;
 714
 715         return 0;
 716 }
 717
 718 static void uec_init_tx_parameter(struct uec_priv *uec, int num_threads_tx)
 719 {
 720         struct uec_inf  *uec_info;
 721         u32             end_bd;
 722         u8              bmrx = 0;
 723         int             i;
 724
 725         uec_info = uec->uec_info;
 726
 727         /* Alloc global Tx parameter RAM page */
 728         uec->tx_glbl_pram_offset =
 729                 qe_muram_alloc(sizeof(struct uec_tx_global_pram),
 730                                UEC_TX_GLOBAL_PRAM_ALIGNMENT);
 731         uec->p_tx_glbl_pram = (struct uec_tx_global_pram *)
 732                                 qe_muram_addr(uec->tx_glbl_pram_offset);
 733
 734         /* Zero the global Tx prameter RAM */
 735         memset(uec->p_tx_glbl_pram, 0, sizeof(struct uec_tx_global_pram));
 736
 737         /* Init global Tx parameter RAM */
 738
 739         /* TEMODER, RMON statistics disable, one Tx queue */
 740         out_be16(&uec->p_tx_glbl_pram->temoder, TEMODER_INIT_VALUE);
 741
 742         /* SQPTR */
 743         uec->send_q_mem_reg_offset =
 744                 qe_muram_alloc(sizeof(struct uec_send_queue_qd),
 745                                UEC_SEND_QUEUE_QUEUE_DESCRIPTOR_ALIGNMENT);
 746         uec->p_send_q_mem_reg = (struct uec_send_queue_mem_region *)
 747                                 qe_muram_addr(uec->send_q_mem_reg_offset);
 748         out_be32(&uec->p_tx_glbl_pram->sqptr, uec->send_q_mem_reg_offset);
 749
 750         /* Setup the table with TxBDs ring */
 751         end_bd = (u32)uec->p_tx_bd_ring + (uec_info->tx_bd_ring_len - 1)
 752                                          * SIZEOFBD;
 753         out_be32(&uec->p_send_q_mem_reg->sqqd[0].bd_ring_base,
 754                  (u32)(uec->p_tx_bd_ring));
 755         out_be32(&uec->p_send_q_mem_reg->sqqd[0].last_bd_completed_address,
 756                  end_bd);
 757
 758         /* Scheduler Base Pointer, we have only one Tx queue, no need it */
 759         out_be32(&uec->p_tx_glbl_pram->schedulerbasepointer, 0);
 760
 761         /* TxRMON Base Pointer, TxRMON disable, we don't need it */
 762         out_be32(&uec->p_tx_glbl_pram->txrmonbaseptr, 0);
 763
 764         /* TSTATE, global snooping, big endian, the CSB bus selected */
 765         bmrx = BMR_INIT_VALUE;
 766         out_be32(&uec->p_tx_glbl_pram->tstate, ((u32)(bmrx) << BMR_SHIFT));
 767
 768         /* IPH_Offset */
 769         for (i = 0; i < MAX_IPH_OFFSET_ENTRY; i++)
 770                 out_8(&uec->p_tx_glbl_pram->iphoffset[i], 0);
 771
 772         /* VTAG table */
 773         for (i = 0; i < UEC_TX_VTAG_TABLE_ENTRY_MAX; i++)
 774                 out_be32(&uec->p_tx_glbl_pram->vtagtable[i], 0);
 775
 776         /* TQPTR */
 777         uec->thread_dat_tx_offset =
 778                 qe_muram_alloc(num_threads_tx *
 779                                sizeof(struct uec_thread_data_tx) +
 780                                32 * (num_threads_tx == 1),
 781                                UEC_THREAD_DATA_ALIGNMENT);
 782
 783         uec->p_thread_data_tx = (struct uec_thread_data_tx *)
 784                                 qe_muram_addr(uec->thread_dat_tx_offset);
 785         out_be32(&uec->p_tx_glbl_pram->tqptr, uec->thread_dat_tx_offset);
 786 }
 787
 788 static void uec_init_rx_parameter(struct uec_priv *uec, int num_threads_rx)
 789 {
 790         u8      bmrx = 0;
 791         int     i;
 792         struct uec_82xx_add_filtering_pram      *p_af_pram;
 793
 794         /* Allocate global Rx parameter RAM page */
 795         uec->rx_glbl_pram_offset =
 796                 qe_muram_alloc(sizeof(struct uec_rx_global_pram),
 797                                UEC_RX_GLOBAL_PRAM_ALIGNMENT);
 798         uec->p_rx_glbl_pram = (struct uec_rx_global_pram *)
 799                                 qe_muram_addr(uec->rx_glbl_pram_offset);
 800
 801         /* Zero Global Rx parameter RAM */
 802         memset(uec->p_rx_glbl_pram, 0, sizeof(struct uec_rx_global_pram));
 803
 804         /* Init global Rx parameter RAM */
 805         /*
 806          * REMODER, Extended feature mode disable, VLAN disable,
 807          * LossLess flow control disable, Receive firmware statisic disable,
 808          * Extended address parsing mode disable, One Rx queues,
 809          * Dynamic maximum/minimum frame length disable, IP checksum check
 810          * disable, IP address alignment disable
 811          */
 812         out_be32(&uec->p_rx_glbl_pram->remoder, REMODER_INIT_VALUE);
 813
 814         /* RQPTR */
 815         uec->thread_dat_rx_offset =
 816                 qe_muram_alloc(num_threads_rx *
 817                                sizeof(struct uec_thread_data_rx),
 818                                UEC_THREAD_DATA_ALIGNMENT);
 819         uec->p_thread_data_rx = (struct uec_thread_data_rx *)
 820                                 qe_muram_addr(uec->thread_dat_rx_offset);
 821         out_be32(&uec->p_rx_glbl_pram->rqptr, uec->thread_dat_rx_offset);
 822
 823         /* Type_or_Len */
 824         out_be16(&uec->p_rx_glbl_pram->typeorlen, 3072);
 825
 826         /* RxRMON base pointer, we don't need it */
 827         out_be32(&uec->p_rx_glbl_pram->rxrmonbaseptr, 0);
 828
 829         /* IntCoalescingPTR, we don't need it, no interrupt */
 830         out_be32(&uec->p_rx_glbl_pram->intcoalescingptr, 0);
 831
 832         /* RSTATE, global snooping, big endian, the CSB bus selected */
 833         bmrx = BMR_INIT_VALUE;
 834         out_8(&uec->p_rx_glbl_pram->rstate, bmrx);
 835
 836         /* MRBLR */
 837         out_be16(&uec->p_rx_glbl_pram->mrblr, MAX_RXBUF_LEN);
 838
 839         /* RBDQPTR */
 840         uec->rx_bd_qs_tbl_offset =
 841                 qe_muram_alloc(sizeof(struct uec_rx_bd_queues_entry) +
 842                                sizeof(struct uec_rx_pref_bds),
 843                                UEC_RX_BD_QUEUES_ALIGNMENT);
 844         uec->p_rx_bd_qs_tbl = (struct uec_rx_bd_queues_entry *)
 845                                 qe_muram_addr(uec->rx_bd_qs_tbl_offset);
 846
 847         /* Zero it */
 848         memset(uec->p_rx_bd_qs_tbl, 0, sizeof(struct uec_rx_bd_queues_entry) +
 849                sizeof(struct uec_rx_pref_bds));
 850         out_be32(&uec->p_rx_glbl_pram->rbdqptr, uec->rx_bd_qs_tbl_offset);
 851         out_be32(&uec->p_rx_bd_qs_tbl->externalbdbaseptr,
 852                  (u32)uec->p_rx_bd_ring);
 853
 854         /* MFLR */
 855         out_be16(&uec->p_rx_glbl_pram->mflr, MAX_FRAME_LEN);
 856         /* MINFLR */
 857         out_be16(&uec->p_rx_glbl_pram->minflr, MIN_FRAME_LEN);
 858         /* MAXD1 */
 859         out_be16(&uec->p_rx_glbl_pram->maxd1, MAX_DMA1_LEN);
 860         /* MAXD2 */
 861         out_be16(&uec->p_rx_glbl_pram->maxd2, MAX_DMA2_LEN);
 862         /* ECAM_PTR */
 863         out_be32(&uec->p_rx_glbl_pram->ecamptr, 0);
 864         /* L2QT */
 865         out_be32(&uec->p_rx_glbl_pram->l2qt, 0);
 866         /* L3QT */
 867         for (i = 0; i < 8; i++)
 868                 out_be32(&uec->p_rx_glbl_pram->l3qt[i], 0);
 869
 870         /* VLAN_TYPE */
 871         out_be16(&uec->p_rx_glbl_pram->vlantype, 0x8100);
 872         /* TCI */
 873         out_be16(&uec->p_rx_glbl_pram->vlantci, 0);
 874
 875         /* Clear PQ2 style address filtering hash table */
 876         p_af_pram = (struct uec_82xx_add_filtering_pram *)
 877                         uec->p_rx_glbl_pram->addressfiltering;
 878
 879         p_af_pram->iaddr_h = 0;
 880         p_af_pram->iaddr_l = 0;
 881         p_af_pram->gaddr_h = 0;
 882         p_af_pram->gaddr_l = 0;
 883 }
 884
 885 static int uec_issue_init_enet_rxtx_cmd(struct uec_priv *uec,
 886                                         int thread_tx, int thread_rx)
 887 {
 888         struct uec_init_cmd_pram                *p_init_enet_param;
 889         u32                             init_enet_param_offset;
 890         struct uec_inf                  *uec_info;
 891         struct ucc_fast_inf                     *uf_info;
 892         int                             i;
 893         int                             snum;
 894         u32                             off;
 895         u32                             entry_val;
 896         u32                             command;
 897         u32                             cecr_subblock;
 898
 899         uec_info = uec->uec_info;
 900         uf_info = &uec_info->uf_info;
 901
 902         /* Allocate init enet command parameter */
 903         uec->init_enet_param_offset =
 904                 qe_muram_alloc(sizeof(struct uec_init_cmd_pram), 4);
 905         init_enet_param_offset = uec->init_enet_param_offset;
 906         uec->p_init_enet_param = (struct uec_init_cmd_pram *)
 907                                 qe_muram_addr(uec->init_enet_param_offset);
 908
 909         /* Zero init enet command struct */
 910         memset((void *)uec->p_init_enet_param, 0,
 911                sizeof(struct uec_init_cmd_pram));
 912
 913         /* Init the command struct */
 914         p_init_enet_param = uec->p_init_enet_param;
 915         p_init_enet_param->resinit0 = ENET_INIT_PARAM_MAGIC_RES_INIT0;
 916         p_init_enet_param->resinit1 = ENET_INIT_PARAM_MAGIC_RES_INIT1;
 917         p_init_enet_param->resinit2 = ENET_INIT_PARAM_MAGIC_RES_INIT2;
 918         p_init_enet_param->resinit3 = ENET_INIT_PARAM_MAGIC_RES_INIT3;
 919         p_init_enet_param->resinit4 = ENET_INIT_PARAM_MAGIC_RES_INIT4;
 920         p_init_enet_param->largestexternallookupkeysize = 0;
 921
 922         p_init_enet_param->rgftgfrxglobal |= ((u32)uec_info->num_threads_rx)
 923                                          << ENET_INIT_PARAM_RGF_SHIFT;
 924         p_init_enet_param->rgftgfrxglobal |= ((u32)uec_info->num_threads_tx)
 925                                          << ENET_INIT_PARAM_TGF_SHIFT;
 926
 927         /* Init Rx global parameter pointer */
 928         p_init_enet_param->rgftgfrxglobal |= uec->rx_glbl_pram_offset |
 929                                                  (u32)uec_info->risc_rx;
 930
 931         /* Init Rx threads */
 932         for (i = 0; i < (thread_rx + 1); i++) {
 933                 snum = qe_get_snum();
 934                 if (snum < 0) {
 935                         printf("%s can not get snum\n", __func__);
 936                         return -ENOMEM;
 937                 }
 938
 939                 if (i == 0) {
 940                         off = 0;
 941                 } else {
 942                         off = qe_muram_alloc(sizeof(struct uec_thread_rx_pram),
 943                                              UEC_THREAD_RX_PRAM_ALIGNMENT);
 944                 }
 945
 946                 entry_val = ((u32)snum << ENET_INIT_PARAM_SNUM_SHIFT) |
 947                                  off | (u32)uec_info->risc_rx;
 948                 p_init_enet_param->rxthread[i] = entry_val;
 949         }
 950
 951         /* Init Tx global parameter pointer */
 952         p_init_enet_param->txglobal = uec->tx_glbl_pram_offset |
 953                                          (u32)uec_info->risc_tx;
 954
 955         /* Init Tx threads */
 956         for (i = 0; i < thread_tx; i++) {
 957                 snum = qe_get_snum();
 958                 if (snum  < 0)  {
 959                         printf("%s can not get snum\n", __func__);
 960                         return -ENOMEM;
 961                 }
 962
 963                 off = qe_muram_alloc(sizeof(struct uec_thread_tx_pram),
 964                                      UEC_THREAD_TX_PRAM_ALIGNMENT);
 965
 966                 entry_val = ((u32)snum << ENET_INIT_PARAM_SNUM_SHIFT) |
 967                                  off | (u32)uec_info->risc_tx;
 968                 p_init_enet_param->txthread[i] = entry_val;
 969         }
 970
 971         __asm__ __volatile__("sync");
 972
 973         /* Issue QE command */
 974         command = QE_INIT_TX_RX;
 975         cecr_subblock = ucc_fast_get_qe_cr_subblock(uf_info->ucc_num);
 976         qe_issue_cmd(command, cecr_subblock, (u8)QE_CR_PROTOCOL_ETHERNET,
 977                      init_enet_param_offset);
 978
 979         return 0;
 980 }
 981
 982 static int uec_startup(struct uec_priv *uec)
 983 {
 984         struct uec_inf                  *uec_info;
 985         struct ucc_fast_inf             *uf_info;
 986         struct ucc_fast_priv            *uccf;
 987         ucc_fast_t                      *uf_regs;
 988         uec_t                           *uec_regs;
 989         int                             num_threads_tx;
 990         int                             num_threads_rx;
 991         u32                             utbipar;
 992         u32                             length;
 993         u32                             align;
 994         struct buffer_descriptor        *bd;
 995         u8                              *buf;
 996         int                             i;
 997
 998         if (!uec || !uec->uec_info) {
 999                 printf("%s: uec or uec_info not initial\n", __func__);
1000                 return -EINVAL;
1001         }
1002
1003         uec_info = uec->uec_info;
1004         uf_info = &uec_info->uf_info;
1005
1006         /* Check if Rx BD ring len is illegal */
1007         if (uec_info->rx_bd_ring_len < UEC_RX_BD_RING_SIZE_MIN ||
1008             (uec_info->rx_bd_ring_len % UEC_RX_BD_RING_SIZE_ALIGNMENT)) {
1009                 printf("%s: Rx BD ring len must be multiple of 4, and > 8.\n",
1010                        __func__);
1011                 return -EINVAL;
1012         }
1013
1014         /* Check if Tx BD ring len is illegal */
1015         if (uec_info->tx_bd_ring_len < UEC_TX_BD_RING_SIZE_MIN) {
1016                 printf("%s: Tx BD ring length must not be smaller than 2.\n",
1017                        __func__);
1018                 return -EINVAL;
1019         }
1020
1021         /* Check if MRBLR is illegal */
1022         if (MAX_RXBUF_LEN == 0 || MAX_RXBUF_LEN  % UEC_MRBLR_ALIGNMENT) {
1023                 printf("%s: max rx buffer length must be mutliple of 128.\n",
1024                        __func__);
1025                 return -EINVAL;
1026         }
1027
1028         /* Both Rx and Tx are stopped */
1029         uec->grace_stopped_rx = 1;
1030         uec->grace_stopped_tx = 1;
1031
1032         /* Init UCC fast */
1033         if (ucc_fast_init(uf_info, &uccf)) {
1034                 printf("%s: failed to init ucc fast\n", __func__);
1035                 return -ENOMEM;
1036         }
1037
1038         /* Save uccf */
1039         uec->uccf = uccf;
1040
1041         /* Convert the Tx threads number */
1042         if (uec_convert_threads_num(uec_info->num_threads_tx,
1043                                     &num_threads_tx)) {
1044                 return -EINVAL;
1045         }
1046
1047         /* Convert the Rx threads number */
1048         if (uec_convert_threads_num(uec_info->num_threads_rx,
1049                                     &num_threads_rx)) {
1050                 return -EINVAL;
1051         }
1052
1053         uf_regs = uccf->uf_regs;
1054
1055         /* UEC register is following UCC fast registers */
1056         uec_regs = (uec_t *)(&uf_regs->ucc_eth);
1057
1058         /* Save the UEC register pointer to UEC private struct */
1059         uec->uec_regs = uec_regs;
1060
1061         /* Init UPSMR, enable hardware statistics (UCC) */
1062         out_be32(&uec->uccf->uf_regs->upsmr, UPSMR_INIT_VALUE);
1063
1064         /* Init MACCFG1, flow control disable, disable Tx and Rx */
1065         out_be32(&uec_regs->maccfg1, MACCFG1_INIT_VALUE);
1066
1067         /* Init MACCFG2, length check, MAC PAD and CRC enable */
1068         out_be32(&uec_regs->maccfg2, MACCFG2_INIT_VALUE);
1069
1070         /* Setup MAC interface mode */
1071         uec_set_mac_if_mode(uec, uec_info->enet_interface_type,
1072                             uec_info->speed);
1073
1074         /* Setup MII management base */
1075 #ifndef CONFIG_eTSEC_MDIO_BUS
1076         uec->uec_mii_regs = (uec_mii_t *)(&uec_regs->miimcfg);
1077 #else
1078         uec->uec_mii_regs = (uec_mii_t *)CONFIG_MIIM_ADDRESS;
1079 #endif
1080
1081         /* Setup MII master clock source */
1082         qe_set_mii_clk_src(uec_info->uf_info.ucc_num);
1083
1084         /* Setup UTBIPAR */
1085         utbipar = in_be32(&uec_regs->utbipar);
1086         utbipar &= ~UTBIPAR_PHY_ADDRESS_MASK;
1087
1088         /* Initialize UTBIPAR address to CONFIG_UTBIPAR_INIT_TBIPA for ALL UEC.
1089          * This frees up the remaining SMI addresses for use.
1090          */
1091         utbipar |= CONFIG_UTBIPAR_INIT_TBIPA << UTBIPAR_PHY_ADDRESS_SHIFT;
1092         out_be32(&uec_regs->utbipar, utbipar);
1093
1094         /* Configure the TBI for SGMII operation */
1095         if (uec->uec_info->enet_interface_type == PHY_INTERFACE_MODE_SGMII &&
1096             uec->uec_info->speed == SPEED_1000) {
1097                 uec_write_phy_reg(uec->dev, uec_regs->utbipar,
1098                                   ENET_TBI_MII_ANA, TBIANA_SETTINGS);
1099
1100                 uec_write_phy_reg(uec->dev, uec_regs->utbipar,
1101                                   ENET_TBI_MII_TBICON, TBICON_CLK_SELECT);
1102
1103                 uec_write_phy_reg(uec->dev, uec_regs->utbipar,
1104                                   ENET_TBI_MII_CR, TBICR_SETTINGS);
1105         }
1106
1107         /* Allocate Tx BDs */
1108         length = ((uec_info->tx_bd_ring_len * SIZEOFBD) /
1109                  UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT) *
1110                  UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT;
1111         if ((uec_info->tx_bd_ring_len * SIZEOFBD) %
1112                  UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT) {
1113                 length += UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT;
1114         }
1115
1116         align = UEC_TX_BD_RING_ALIGNMENT;
1117         uec->tx_bd_ring_offset = (u32)malloc((u32)(length + align));
1118         if (uec->tx_bd_ring_offset != 0) {
1119                 uec->p_tx_bd_ring = (u8 *)((uec->tx_bd_ring_offset + align)
1120                                                  & ~(align - 1));
1121         }
1122
1123         /* Zero all of Tx BDs */
1124         memset((void *)(uec->tx_bd_ring_offset), 0, length + align);
1125
1126         /* Allocate Rx BDs */
1127         length = uec_info->rx_bd_ring_len * SIZEOFBD;
1128         align = UEC_RX_BD_RING_ALIGNMENT;
1129         uec->rx_bd_ring_offset = (u32)(malloc((u32)(length + align)));
1130         if (uec->rx_bd_ring_offset != 0) {
1131                 uec->p_rx_bd_ring = (u8 *)((uec->rx_bd_ring_offset + align)
1132                                                          & ~(align - 1));
1133         }
1134
1135         /* Zero all of Rx BDs */
1136         memset((void *)(uec->rx_bd_ring_offset), 0, length + align);
1137
1138         /* Allocate Rx buffer */
1139         length = uec_info->rx_bd_ring_len * MAX_RXBUF_LEN;
1140         align = UEC_RX_DATA_BUF_ALIGNMENT;
1141         uec->rx_buf_offset = (u32)malloc(length + align);
1142         if (uec->rx_buf_offset != 0) {
1143                 uec->p_rx_buf = (u8 *)((uec->rx_buf_offset + align)
1144                                                  & ~(align - 1));
1145         }
1146
1147         /* Zero all of the Rx buffer */
1148         memset((void *)(uec->rx_buf_offset), 0, length + align);
1149
1150         /* Init TxBD ring */
1151         bd = (struct buffer_descriptor *)uec->p_tx_bd_ring;
1152         uec->tx_bd = bd;
1153
1154         for (i = 0; i < uec_info->tx_bd_ring_len; i++) {
1155                 BD_DATA_CLEAR(bd);
1156                 BD_STATUS_SET(bd, 0);
1157                 BD_LENGTH_SET(bd, 0);
1158                 bd++;
1159         }
1160         BD_STATUS_SET((--bd), TX_BD_WRAP);
1161
1162         /* Init RxBD ring */
1163         bd = (struct buffer_descriptor *)uec->p_rx_bd_ring;
1164         uec->rx_bd = bd;
1165         buf = uec->p_rx_buf;
1166         for (i = 0; i < uec_info->rx_bd_ring_len; i++) {
1167                 BD_DATA_SET(bd, buf);
1168                 BD_LENGTH_SET(bd, 0);
1169                 BD_STATUS_SET(bd, RX_BD_EMPTY);
1170                 buf += MAX_RXBUF_LEN;
1171                 bd++;
1172         }
1173         BD_STATUS_SET((--bd), RX_BD_WRAP | RX_BD_EMPTY);
1174
1175         /* Init global Tx parameter RAM */
1176         uec_init_tx_parameter(uec, num_threads_tx);
1177
1178         /* Init global Rx parameter RAM */
1179         uec_init_rx_parameter(uec, num_threads_rx);
1180
1181         /* Init ethernet Tx and Rx parameter command */
1182         if (uec_issue_init_enet_rxtx_cmd(uec, num_threads_tx,
1183                                          num_threads_rx)) {
1184                 printf("%s issue init enet cmd failed\n", __func__);
1185                 return -ENOMEM;
1186         }
1187
1188         return 0;
1189 }
1190
1191 static int uec_init(struct eth_device *dev, struct bd_info *bd)
1192 {
1193         struct uec_priv         *uec;
1194         int                     err, i;
1195         struct phy_info         *curphy;
1196 #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025)
1197         ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
1198 #endif
1199
1200         uec = (struct uec_priv *)dev->priv;
1201
1202         if (!uec->the_first_run) {
1203 #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025)
1204                 /*
1205                  * QE9 and QE12 need to be set for enabling QE MII
1206                  * management signals
1207                  */
1208                 setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE9);
1209                 setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE12);
1210 #endif
1211
1212                 err = init_phy(dev);
1213                 if (err) {
1214                         printf("%s: Cannot initialize PHY, aborting.\n",
1215                                dev->name);
1216                         return err;
1217                 }
1218
1219                 curphy = uec->mii_info->phyinfo;
1220
1221                 if (curphy->config_aneg) {
1222                         err = curphy->config_aneg(uec->mii_info);
1223                         if (err) {
1224                                 printf("%s: Can't negotiate PHY\n", dev->name);
1225                                 return err;
1226                         }
1227                 }
1228
1229                 /* Give PHYs up to 5 sec to report a link */
1230                 i = 50;
1231                 do {
1232                         err = curphy->read_status(uec->mii_info);
1233                         if (!(((i-- > 0) && !uec->mii_info->link) || err))
1234                                 break;
1235                         mdelay(100);
1236                 } while (1);
1237
1238 #if defined(CONFIG_ARCH_P1021) || defined(CONFIG_ARCH_P1025)
1239                 /* QE12 needs to be released for enabling LBCTL signal*/
1240                 clrbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_QE12);
1241 #endif
1242
1243                 if (err || i <= 0)
1244                         printf("warning: %s: timeout on PHY link\n", dev->name);
1245
1246                 adjust_link(dev);
1247                 uec->the_first_run = 1;
1248         }
1249
1250         /* Set up the MAC address */
1251         if (dev->enetaddr[0] & 0x01) {
1252                 printf("%s: MacAddress is multcast address\n",
1253                        __func__);
1254                 return -1;
1255         }
1256         uec_set_mac_address(uec, dev->enetaddr);
1257
1258         err = uec_open(uec, COMM_DIR_RX_AND_TX);
1259         if (err) {
1260                 printf("%s: cannot enable UEC device\n", dev->name);
1261                 return -1;
1262         }
1263
1264         phy_change(dev);
1265
1266         return uec->mii_info->link ? 0 : -1;
1267 }
1268
1269 static void uec_halt(struct eth_device *dev)
1270 {
1271         struct uec_priv *uec = (struct uec_priv *)dev->priv;
1272
1273         uec_stop(uec, COMM_DIR_RX_AND_TX);
1274 }
1275
1276 static int uec_send(struct eth_device *dev, void *buf, int len)
1277 {
1278         struct uec_priv         *uec;
1279         struct ucc_fast_priv    *uccf;
1280         struct buffer_descriptor        *bd;
1281         u16                     status;
1282         int                     i;
1283         int                     result = 0;
1284
1285         uec = (struct uec_priv *)dev->priv;
1286         uccf = uec->uccf;
1287         bd = uec->tx_bd;
1288
1289         /* Find an empty TxBD */
1290         for (i = 0; BD_STATUS(bd) & TX_BD_READY; i++) {
1291                 if (i > 0x100000) {
1292                         printf("%s: tx buffer not ready\n", dev->name);
1293                         return result;
1294                 }
1295         }
1296
1297         /* Init TxBD */
1298         BD_DATA_SET(bd, buf);
1299         BD_LENGTH_SET(bd, len);
1300         status = BD_STATUS(bd);
1301         status &= BD_WRAP;
1302         status |= (TX_BD_READY | TX_BD_LAST);
1303         BD_STATUS_SET(bd, status);
1304
1305         /* Tell UCC to transmit the buffer */
1306         ucc_fast_transmit_on_demand(uccf);
1307
1308         /* Wait for buffer to be transmitted */
1309         for (i = 0; BD_STATUS(bd) & TX_BD_READY; i++) {
1310                 if (i > 0x100000) {
1311                         printf("%s: tx error\n", dev->name);
1312                         return result;
1313                 }
1314         }
1315
1316         /* Ok, the buffer be transimitted */
1317         BD_ADVANCE(bd, status, uec->p_tx_bd_ring);
1318         uec->tx_bd = bd;
1319         result = 1;
1320
1321         return result;
1322 }
1323
1324 static int uec_recv(struct eth_device *dev)
1325 {
1326         struct uec_priv         *uec = dev->priv;
1327         struct buffer_descriptor        *bd;
1328         u16                     status;
1329         u16                     len;
1330         u8                      *data;
1331
1332         bd = uec->rx_bd;
1333         status = BD_STATUS(bd);
1334
1335         while (!(status & RX_BD_EMPTY)) {
1336                 if (!(status & RX_BD_ERROR)) {
1337                         data = BD_DATA(bd);
1338                         len = BD_LENGTH(bd);
1339                         net_process_received_packet(data, len);
1340                 } else {
1341                         printf("%s: Rx error\n", dev->name);
1342                 }
1343                 status &= BD_CLEAN;
1344                 BD_LENGTH_SET(bd, 0);
1345                 BD_STATUS_SET(bd, status | RX_BD_EMPTY);
1346                 BD_ADVANCE(bd, status, uec->p_rx_bd_ring);
1347                 status = BD_STATUS(bd);
1348         }
1349         uec->rx_bd = bd;
1350
1351         return 1;
1352 }
1353
1354 int uec_initialize(struct bd_info *bis, struct uec_inf *uec_info)
1355 {
1356         struct eth_device       *dev;
1357         int                     i;
1358         struct uec_priv         *uec;
1359         int                     err;
1360
1361         dev = (struct eth_device *)malloc(sizeof(struct eth_device));
1362         if (!dev)
1363                 return 0;
1364         memset(dev, 0, sizeof(struct eth_device));
1365
1366         /* Allocate the UEC private struct */
1367         uec = (struct uec_priv *)malloc(sizeof(struct uec_priv));
1368         if (!uec)
1369                 return -ENOMEM;
1370
1371         memset(uec, 0, sizeof(struct uec_priv));
1372
1373         /* Adjust uec_info */
1374 #if (MAX_QE_RISC == 4)
1375         uec_info->risc_tx = QE_RISC_ALLOCATION_FOUR_RISCS;
1376         uec_info->risc_rx = QE_RISC_ALLOCATION_FOUR_RISCS;
1377 #endif
1378
1379         devlist[uec_info->uf_info.ucc_num] = dev;
1380
1381         uec->uec_info = uec_info;
1382         uec->dev = dev;
1383
1384         sprintf(dev->name, "UEC%d", uec_info->uf_info.ucc_num);
1385         dev->iobase = 0;
1386         dev->priv = (void *)uec;
1387         dev->init = uec_init;
1388         dev->halt = uec_halt;
1389         dev->send = uec_send;
1390         dev->recv = uec_recv;
1391
1392         /* Clear the ethnet address */
1393         for (i = 0; i < 6; i++)
1394                 dev->enetaddr[i] = 0;
1395
1396         eth_register(dev);
1397
1398         err = uec_startup(uec);
1399         if (err) {
1400                 printf("%s: Cannot configure net device, aborting.", dev->name);
1401                 return err;
1402         }
1403
1404 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
1405         int retval;
1406         struct mii_dev *mdiodev = mdio_alloc();
1407
1408         if (!mdiodev)
1409                 return -ENOMEM;
1410         strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
1411         mdiodev->read = uec_miiphy_read;
1412         mdiodev->write = uec_miiphy_write;
1413
1414         retval = mdio_register(mdiodev);
1415         if (retval < 0)
1416                 return retval;
1417 #endif
1418
1419         return 1;
1420 }
1421
1422 int uec_eth_init(struct bd_info *bis, struct uec_inf *uecs, int num)
1423 {
1424         int i;
1425
1426         for (i = 0; i < num; i++)
1427                 uec_initialize(bis, &uecs[i]);
1428
1429         return 0;
1430 }
1431
1432 int uec_standard_init(struct bd_info *bis)
1433 {
1434         return uec_eth_init(bis, uec_info, ARRAY_SIZE(uec_info));
1435 }
1436 #endif