1 /* 2 * ax88180: ASIX AX88180 Non-PCI Gigabit Ethernet u-boot driver 3 * 4 * This program is free software; you can distribute it and/or modify 5 * it under the terms of the GNU General Public License (Version 2) as 6 * published by the Free Software Foundation. 7 * This program is distributed in the hope it will be useful, but 8 * WITHOUT ANY WARRANTY; without even the implied warranty of 9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 10 * See the GNU General Public License for more details. 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, 14 * USA. 15 */ 16 17 /* 18 * ======================================================================== 19 * ASIX AX88180 Non-PCI 16/32-bit Gigabit Ethernet Linux Driver 20 * 21 * The AX88180 Ethernet controller is a high performance and highly 22 * integrated local CPU bus Ethernet controller with embedded 40K bytes 23 * SRAM and supports both 16-bit and 32-bit SRAM-Like interfaces for any 24 * embedded systems. 25 * The AX88180 is a single chip 10/100/1000Mbps Gigabit Ethernet 26 * controller that supports both MII and RGMII interfaces and is 27 * compliant to IEEE 802.3, IEEE 802.3u and IEEE 802.3z standards. 28 * 29 * Please visit ASIX's web site (http://www.asix.com.tw) for more 30 * details. 31 * 32 * Module Name : ax88180.c 33 * Date : 2008-07-07 34 * History 35 * 09/06/2006 : New release for AX88180 US2 chip. 36 * 07/07/2008 : Fix up the coding style and using inline functions 37 * instead of macros 38 * ======================================================================== 39 */ 40 #include <common.h> 41 #include <command.h> 42 #include <net.h> 43 #include <malloc.h> 44 #include <linux/mii.h> 45 #include "ax88180.h" 46 47 /* 48 * =========================================================================== 49 * Local SubProgram Declaration 50 * =========================================================================== 51 */ 52 static void ax88180_rx_handler (struct eth_device *dev); 53 static int ax88180_phy_initial (struct eth_device *dev); 54 static void ax88180_media_config (struct eth_device *dev); 55 static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev); 56 static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev); 57 static unsigned short ax88180_mdio_read (struct eth_device *dev, 58 unsigned long regaddr); 59 static void ax88180_mdio_write (struct eth_device *dev, 60 unsigned long regaddr, unsigned short regdata); 61 62 /* 63 * =========================================================================== 64 * Local SubProgram Bodies 65 * =========================================================================== 66 */ 67 static int ax88180_mdio_check_complete (struct eth_device *dev) 68 { 69 int us_cnt = 10000; 70 unsigned short tmpval; 71 72 /* MDIO read/write should not take more than 10 ms */ 73 while (--us_cnt) { 74 tmpval = INW (dev, MDIOCTRL); 75 if (((tmpval & READ_PHY) == 0) && ((tmpval & WRITE_PHY) == 0)) 76 break; 77 } 78 79 return us_cnt; 80 } 81 82 static unsigned short 83 ax88180_mdio_read (struct eth_device *dev, unsigned long regaddr) 84 { 85 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 86 unsigned long tmpval = 0; 87 88 OUTW (dev, (READ_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL); 89 90 if (ax88180_mdio_check_complete (dev)) 91 tmpval = INW (dev, MDIODP); 92 else 93 printf ("Failed to read PHY register!\n"); 94 95 return (unsigned short)(tmpval & 0xFFFF); 96 } 97 98 static void 99 ax88180_mdio_write (struct eth_device *dev, unsigned long regaddr, 100 unsigned short regdata) 101 { 102 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 103 104 OUTW (dev, regdata, MDIODP); 105 106 OUTW (dev, (WRITE_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL); 107 108 if (!ax88180_mdio_check_complete (dev)) 109 printf ("Failed to write PHY register!\n"); 110 } 111 112 static int ax88180_phy_reset (struct eth_device *dev) 113 { 114 unsigned short delay_cnt = 500; 115 116 ax88180_mdio_write (dev, MII_BMCR, (BMCR_RESET | BMCR_ANENABLE)); 117 118 /* Wait for the reset to complete, or time out (500 ms) */ 119 while (ax88180_mdio_read (dev, MII_BMCR) & BMCR_RESET) { 120 udelay (1000); 121 if (--delay_cnt == 0) { 122 printf ("Failed to reset PHY!\n"); 123 return -1; 124 } 125 } 126 127 return 0; 128 } 129 130 static void ax88180_mac_reset (struct eth_device *dev) 131 { 132 unsigned long tmpval; 133 unsigned char i; 134 135 struct { 136 unsigned short offset, value; 137 } program_seq[] = { 138 { 139 MISC, MISC_NORMAL}, { 140 RXINDICATOR, DEFAULT_RXINDICATOR}, { 141 TXCMD, DEFAULT_TXCMD}, { 142 TXBS, DEFAULT_TXBS}, { 143 TXDES0, DEFAULT_TXDES0}, { 144 TXDES1, DEFAULT_TXDES1}, { 145 TXDES2, DEFAULT_TXDES2}, { 146 TXDES3, DEFAULT_TXDES3}, { 147 TXCFG, DEFAULT_TXCFG}, { 148 MACCFG2, DEFAULT_MACCFG2}, { 149 MACCFG3, DEFAULT_MACCFG3}, { 150 TXLEN, DEFAULT_TXLEN}, { 151 RXBTHD0, DEFAULT_RXBTHD0}, { 152 RXBTHD1, DEFAULT_RXBTHD1}, { 153 RXFULTHD, DEFAULT_RXFULTHD}, { 154 DOGTHD0, DEFAULT_DOGTHD0}, { 155 DOGTHD1, DEFAULT_DOGTHD1},}; 156 157 OUTW (dev, MISC_RESET_MAC, MISC); 158 tmpval = INW (dev, MISC); 159 160 for (i = 0; i < ARRAY_SIZE(program_seq); i++) 161 OUTW (dev, program_seq[i].value, program_seq[i].offset); 162 } 163 164 static int ax88180_poll_tx_complete (struct eth_device *dev) 165 { 166 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 167 unsigned long tmpval, txbs_txdp; 168 int TimeOutCnt = 10000; 169 170 txbs_txdp = 1 << priv->NextTxDesc; 171 172 while (TimeOutCnt--) { 173 174 tmpval = INW (dev, TXBS); 175 176 if ((tmpval & txbs_txdp) == 0) 177 break; 178 179 udelay (100); 180 } 181 182 if (TimeOutCnt) 183 return 0; 184 else 185 return -TimeOutCnt; 186 } 187 188 static void ax88180_rx_handler (struct eth_device *dev) 189 { 190 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 191 unsigned long data_size; 192 unsigned short rxcurt_ptr, rxbound_ptr, next_ptr; 193 int i; 194 #if defined (CONFIG_DRIVER_AX88180_16BIT) 195 unsigned short *rxdata = (unsigned short *)net_rx_packets[0]; 196 #else 197 unsigned long *rxdata = (unsigned long *)net_rx_packets[0]; 198 #endif 199 unsigned short count; 200 201 rxcurt_ptr = INW (dev, RXCURT); 202 rxbound_ptr = INW (dev, RXBOUND); 203 next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK; 204 205 debug ("ax88180: RX original RXBOUND=0x%04x," 206 " RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr); 207 208 while (next_ptr != rxcurt_ptr) { 209 210 OUTW (dev, RX_START_READ, RXINDICATOR); 211 212 data_size = READ_RXBUF (dev) & 0xFFFF; 213 214 if ((data_size == 0) || (data_size > MAX_RX_SIZE)) { 215 216 OUTW (dev, RX_STOP_READ, RXINDICATOR); 217 218 ax88180_mac_reset (dev); 219 printf ("ax88180: Invalid Rx packet length!" 220 " (len=0x%04lx)\n", data_size); 221 222 debug ("ax88180: RX RXBOUND=0x%04x," 223 "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr); 224 return; 225 } 226 227 rxbound_ptr += (((data_size + 0xF) & 0xFFF0) >> 4) + 1; 228 rxbound_ptr &= RX_PAGE_NUM_MASK; 229 230 /* Comput access times */ 231 count = (data_size + priv->PadSize) >> priv->BusWidth; 232 233 for (i = 0; i < count; i++) { 234 *(rxdata + i) = READ_RXBUF (dev); 235 } 236 237 OUTW (dev, RX_STOP_READ, RXINDICATOR); 238 239 /* Pass the packet up to the protocol layers. */ 240 net_process_received_packet(net_rx_packets[0], data_size); 241 242 OUTW (dev, rxbound_ptr, RXBOUND); 243 244 rxcurt_ptr = INW (dev, RXCURT); 245 rxbound_ptr = INW (dev, RXBOUND); 246 next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK; 247 248 debug ("ax88180: RX updated RXBOUND=0x%04x," 249 "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr); 250 } 251 252 return; 253 } 254 255 static int ax88180_phy_initial (struct eth_device *dev) 256 { 257 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 258 unsigned long tmp_regval; 259 unsigned short phyaddr; 260 261 /* Search for first avaliable PHY chipset */ 262 #ifdef CONFIG_PHY_ADDR 263 phyaddr = CONFIG_PHY_ADDR; 264 #else 265 for (phyaddr = 0; phyaddr < 32; ++phyaddr) 266 #endif 267 { 268 priv->PhyAddr = phyaddr; 269 priv->PhyID0 = ax88180_mdio_read(dev, MII_PHYSID1); 270 priv->PhyID1 = ax88180_mdio_read(dev, MII_PHYSID2); 271 272 switch (priv->PhyID0) { 273 case MARVELL_ALASKA_PHYSID0: 274 debug("ax88180: Found Marvell Alaska PHY family." 275 " (PHY Addr=0x%x)\n", priv->PhyAddr); 276 277 switch (priv->PhyID1) { 278 case MARVELL_88E1118_PHYSID1: 279 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 2); 280 ax88180_mdio_write(dev, M88E1118_CR, 281 M88E1118_CR_DEFAULT); 282 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 3); 283 ax88180_mdio_write(dev, M88E1118_LEDCTL, 284 M88E1118_LEDCTL_DEFAULT); 285 ax88180_mdio_write(dev, M88E1118_LEDMIX, 286 M88E1118_LEDMIX_LED050 | M88E1118_LEDMIX_LED150 | 0x15); 287 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 0); 288 default: /* Default to 88E1111 Phy */ 289 tmp_regval = ax88180_mdio_read(dev, M88E1111_EXT_SSR); 290 if ((tmp_regval & HWCFG_MODE_MASK) != RGMII_COPPER_MODE) 291 ax88180_mdio_write(dev, M88E1111_EXT_SCR, 292 DEFAULT_EXT_SCR); 293 } 294 295 if (ax88180_phy_reset(dev) < 0) 296 return 0; 297 ax88180_mdio_write(dev, M88_IER, LINK_CHANGE_INT); 298 299 return 1; 300 301 case CICADA_CIS8201_PHYSID0: 302 debug("ax88180: Found CICADA CIS8201 PHY" 303 " chipset. (PHY Addr=0x%x)\n", priv->PhyAddr); 304 305 ax88180_mdio_write(dev, CIS_IMR, 306 (CIS_INT_ENABLE | LINK_CHANGE_INT)); 307 308 /* Set CIS_SMI_PRIORITY bit before force the media mode */ 309 tmp_regval = ax88180_mdio_read(dev, CIS_AUX_CTRL_STATUS); 310 tmp_regval &= ~CIS_SMI_PRIORITY; 311 ax88180_mdio_write(dev, CIS_AUX_CTRL_STATUS, tmp_regval); 312 313 return 1; 314 315 case 0xffff: 316 /* No PHY at this addr */ 317 break; 318 319 default: 320 printf("ax88180: Unknown PHY chipset %#x at addr %#x\n", 321 priv->PhyID0, priv->PhyAddr); 322 break; 323 } 324 } 325 326 printf("ax88180: Unknown PHY chipset!!\n"); 327 return 0; 328 } 329 330 static void ax88180_media_config (struct eth_device *dev) 331 { 332 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 333 unsigned long bmcr_val, bmsr_val; 334 unsigned long rxcfg_val, maccfg0_val, maccfg1_val; 335 unsigned long RealMediaMode; 336 int i; 337 338 /* Waiting 2 seconds for PHY link stable */ 339 for (i = 0; i < 20000; i++) { 340 bmsr_val = ax88180_mdio_read (dev, MII_BMSR); 341 if (bmsr_val & BMSR_LSTATUS) { 342 break; 343 } 344 udelay (100); 345 } 346 347 bmsr_val = ax88180_mdio_read (dev, MII_BMSR); 348 debug ("ax88180: BMSR=0x%04x\n", (unsigned int)bmsr_val); 349 350 if (bmsr_val & BMSR_LSTATUS) { 351 bmcr_val = ax88180_mdio_read (dev, MII_BMCR); 352 353 if (bmcr_val & BMCR_ANENABLE) { 354 355 /* 356 * Waiting for Auto-negotiation completion, this may 357 * take up to 5 seconds. 358 */ 359 debug ("ax88180: Auto-negotiation is " 360 "enabled. Waiting for NWay completion..\n"); 361 for (i = 0; i < 50000; i++) { 362 bmsr_val = ax88180_mdio_read (dev, MII_BMSR); 363 if (bmsr_val & BMSR_ANEGCOMPLETE) { 364 break; 365 } 366 udelay (100); 367 } 368 } else 369 debug ("ax88180: Auto-negotiation is disabled.\n"); 370 371 debug ("ax88180: BMCR=0x%04x, BMSR=0x%04x\n", 372 (unsigned int)bmcr_val, (unsigned int)bmsr_val); 373 374 /* Get real media mode here */ 375 switch (priv->PhyID0) { 376 case MARVELL_ALASKA_PHYSID0: 377 RealMediaMode = get_MarvellPHY_media_mode(dev); 378 break; 379 case CICADA_CIS8201_PHYSID0: 380 RealMediaMode = get_CicadaPHY_media_mode(dev); 381 break; 382 default: 383 RealMediaMode = MEDIA_1000FULL; 384 break; 385 } 386 387 priv->LinkState = INS_LINK_UP; 388 389 switch (RealMediaMode) { 390 case MEDIA_1000FULL: 391 debug ("ax88180: 1000Mbps Full-duplex mode.\n"); 392 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG; 393 maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0; 394 maccfg1_val = GIGA_MODE_EN | RXFLOW_EN | 395 FULLDUPLEX | DEFAULT_MACCFG1; 396 break; 397 398 case MEDIA_1000HALF: 399 debug ("ax88180: 1000Mbps Half-duplex mode.\n"); 400 rxcfg_val = DEFAULT_RXCFG; 401 maccfg0_val = DEFAULT_MACCFG0; 402 maccfg1_val = GIGA_MODE_EN | DEFAULT_MACCFG1; 403 break; 404 405 case MEDIA_100FULL: 406 debug ("ax88180: 100Mbps Full-duplex mode.\n"); 407 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG; 408 maccfg0_val = SPEED100 | TXFLOW_ENABLE 409 | DEFAULT_MACCFG0; 410 maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1; 411 break; 412 413 case MEDIA_100HALF: 414 debug ("ax88180: 100Mbps Half-duplex mode.\n"); 415 rxcfg_val = DEFAULT_RXCFG; 416 maccfg0_val = SPEED100 | DEFAULT_MACCFG0; 417 maccfg1_val = DEFAULT_MACCFG1; 418 break; 419 420 case MEDIA_10FULL: 421 debug ("ax88180: 10Mbps Full-duplex mode.\n"); 422 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG; 423 maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0; 424 maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1; 425 break; 426 427 case MEDIA_10HALF: 428 debug ("ax88180: 10Mbps Half-duplex mode.\n"); 429 rxcfg_val = DEFAULT_RXCFG; 430 maccfg0_val = DEFAULT_MACCFG0; 431 maccfg1_val = DEFAULT_MACCFG1; 432 break; 433 default: 434 debug ("ax88180: Unknow media mode.\n"); 435 rxcfg_val = DEFAULT_RXCFG; 436 maccfg0_val = DEFAULT_MACCFG0; 437 maccfg1_val = DEFAULT_MACCFG1; 438 439 priv->LinkState = INS_LINK_DOWN; 440 break; 441 } 442 443 } else { 444 rxcfg_val = DEFAULT_RXCFG; 445 maccfg0_val = DEFAULT_MACCFG0; 446 maccfg1_val = DEFAULT_MACCFG1; 447 448 priv->LinkState = INS_LINK_DOWN; 449 } 450 451 OUTW (dev, rxcfg_val, RXCFG); 452 OUTW (dev, maccfg0_val, MACCFG0); 453 OUTW (dev, maccfg1_val, MACCFG1); 454 455 return; 456 } 457 458 static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev) 459 { 460 unsigned long m88_ssr; 461 unsigned long MediaMode; 462 463 m88_ssr = ax88180_mdio_read (dev, M88_SSR); 464 switch (m88_ssr & SSR_MEDIA_MASK) { 465 case SSR_1000FULL: 466 MediaMode = MEDIA_1000FULL; 467 break; 468 case SSR_1000HALF: 469 MediaMode = MEDIA_1000HALF; 470 break; 471 case SSR_100FULL: 472 MediaMode = MEDIA_100FULL; 473 break; 474 case SSR_100HALF: 475 MediaMode = MEDIA_100HALF; 476 break; 477 case SSR_10FULL: 478 MediaMode = MEDIA_10FULL; 479 break; 480 case SSR_10HALF: 481 MediaMode = MEDIA_10HALF; 482 break; 483 default: 484 MediaMode = MEDIA_UNKNOWN; 485 break; 486 } 487 488 return MediaMode; 489 } 490 491 static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev) 492 { 493 unsigned long tmp_regval; 494 unsigned long MediaMode; 495 496 tmp_regval = ax88180_mdio_read (dev, CIS_AUX_CTRL_STATUS); 497 switch (tmp_regval & CIS_MEDIA_MASK) { 498 case CIS_1000FULL: 499 MediaMode = MEDIA_1000FULL; 500 break; 501 case CIS_1000HALF: 502 MediaMode = MEDIA_1000HALF; 503 break; 504 case CIS_100FULL: 505 MediaMode = MEDIA_100FULL; 506 break; 507 case CIS_100HALF: 508 MediaMode = MEDIA_100HALF; 509 break; 510 case CIS_10FULL: 511 MediaMode = MEDIA_10FULL; 512 break; 513 case CIS_10HALF: 514 MediaMode = MEDIA_10HALF; 515 break; 516 default: 517 MediaMode = MEDIA_UNKNOWN; 518 break; 519 } 520 521 return MediaMode; 522 } 523 524 static void ax88180_halt (struct eth_device *dev) 525 { 526 /* Disable AX88180 TX/RX functions */ 527 OUTW (dev, WAKEMOD, CMD); 528 } 529 530 static int ax88180_init (struct eth_device *dev, bd_t * bd) 531 { 532 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 533 unsigned short tmp_regval; 534 535 ax88180_mac_reset (dev); 536 537 /* Disable interrupt */ 538 OUTW (dev, CLEAR_IMR, IMR); 539 540 /* Disable AX88180 TX/RX functions */ 541 OUTW (dev, WAKEMOD, CMD); 542 543 /* Fill the MAC address */ 544 tmp_regval = 545 dev->enetaddr[0] | (((unsigned short)dev->enetaddr[1]) << 8); 546 OUTW (dev, tmp_regval, MACID0); 547 548 tmp_regval = 549 dev->enetaddr[2] | (((unsigned short)dev->enetaddr[3]) << 8); 550 OUTW (dev, tmp_regval, MACID1); 551 552 tmp_regval = 553 dev->enetaddr[4] | (((unsigned short)dev->enetaddr[5]) << 8); 554 OUTW (dev, tmp_regval, MACID2); 555 556 ax88180_media_config (dev); 557 558 OUTW (dev, DEFAULT_RXFILTER, RXFILTER); 559 560 /* Initial variables here */ 561 priv->FirstTxDesc = TXDP0; 562 priv->NextTxDesc = TXDP0; 563 564 /* Check if there is any invalid interrupt status and clear it. */ 565 OUTW (dev, INW (dev, ISR), ISR); 566 567 /* Start AX88180 TX/RX functions */ 568 OUTW (dev, (RXEN | TXEN | WAKEMOD), CMD); 569 570 return 0; 571 } 572 573 /* Get a data block via Ethernet */ 574 static int ax88180_recv (struct eth_device *dev) 575 { 576 unsigned short ISR_Status; 577 unsigned short tmp_regval; 578 579 /* Read and check interrupt status here. */ 580 ISR_Status = INW (dev, ISR); 581 582 while (ISR_Status) { 583 /* Clear the interrupt status */ 584 OUTW (dev, ISR_Status, ISR); 585 586 debug ("\nax88180: The interrupt status = 0x%04x\n", 587 ISR_Status); 588 589 if (ISR_Status & ISR_PHY) { 590 /* Read ISR register once to clear PHY interrupt bit */ 591 tmp_regval = ax88180_mdio_read (dev, M88_ISR); 592 ax88180_media_config (dev); 593 } 594 595 if ((ISR_Status & ISR_RX) || (ISR_Status & ISR_RXBUFFOVR)) { 596 ax88180_rx_handler (dev); 597 } 598 599 /* Read and check interrupt status again */ 600 ISR_Status = INW (dev, ISR); 601 } 602 603 return 0; 604 } 605 606 /* Send a data block via Ethernet. */ 607 static int ax88180_send(struct eth_device *dev, void *packet, int length) 608 { 609 struct ax88180_private *priv = (struct ax88180_private *)dev->priv; 610 unsigned short TXDES_addr; 611 unsigned short txcmd_txdp, txbs_txdp; 612 unsigned short tmp_data; 613 int i; 614 #if defined (CONFIG_DRIVER_AX88180_16BIT) 615 volatile unsigned short *txdata = (volatile unsigned short *)packet; 616 #else 617 volatile unsigned long *txdata = (volatile unsigned long *)packet; 618 #endif 619 unsigned short count; 620 621 if (priv->LinkState != INS_LINK_UP) { 622 return 0; 623 } 624 625 priv->FirstTxDesc = priv->NextTxDesc; 626 txbs_txdp = 1 << priv->FirstTxDesc; 627 628 debug ("ax88180: TXDP%d is available\n", priv->FirstTxDesc); 629 630 txcmd_txdp = priv->FirstTxDesc << 13; 631 TXDES_addr = TXDES0 + (priv->FirstTxDesc << 2); 632 633 OUTW (dev, (txcmd_txdp | length | TX_START_WRITE), TXCMD); 634 635 /* Comput access times */ 636 count = (length + priv->PadSize) >> priv->BusWidth; 637 638 for (i = 0; i < count; i++) { 639 WRITE_TXBUF (dev, *(txdata + i)); 640 } 641 642 OUTW (dev, txcmd_txdp | length, TXCMD); 643 OUTW (dev, txbs_txdp, TXBS); 644 OUTW (dev, (TXDPx_ENABLE | length), TXDES_addr); 645 646 priv->NextTxDesc = (priv->NextTxDesc + 1) & TXDP_MASK; 647 648 /* 649 * Check the available transmit descriptor, if we had exhausted all 650 * transmit descriptor ,then we have to wait for at least one free 651 * descriptor 652 */ 653 txbs_txdp = 1 << priv->NextTxDesc; 654 tmp_data = INW (dev, TXBS); 655 656 if (tmp_data & txbs_txdp) { 657 if (ax88180_poll_tx_complete (dev) < 0) { 658 ax88180_mac_reset (dev); 659 priv->FirstTxDesc = TXDP0; 660 priv->NextTxDesc = TXDP0; 661 printf ("ax88180: Transmit time out occurred!\n"); 662 } 663 } 664 665 return 0; 666 } 667 668 static void ax88180_read_mac_addr (struct eth_device *dev) 669 { 670 unsigned short macid0_val, macid1_val, macid2_val; 671 unsigned short tmp_regval; 672 unsigned short i; 673 674 /* Reload MAC address from EEPROM */ 675 OUTW (dev, RELOAD_EEPROM, PROMCTRL); 676 677 /* Waiting for reload eeprom completion */ 678 for (i = 0; i < 500; i++) { 679 tmp_regval = INW (dev, PROMCTRL); 680 if ((tmp_regval & RELOAD_EEPROM) == 0) 681 break; 682 udelay (1000); 683 } 684 685 /* Get MAC addresses */ 686 macid0_val = INW (dev, MACID0); 687 macid1_val = INW (dev, MACID1); 688 macid2_val = INW (dev, MACID2); 689 690 if (((macid0_val | macid1_val | macid2_val) != 0) && 691 ((macid0_val & 0x01) == 0)) { 692 dev->enetaddr[0] = (unsigned char)macid0_val; 693 dev->enetaddr[1] = (unsigned char)(macid0_val >> 8); 694 dev->enetaddr[2] = (unsigned char)macid1_val; 695 dev->enetaddr[3] = (unsigned char)(macid1_val >> 8); 696 dev->enetaddr[4] = (unsigned char)macid2_val; 697 dev->enetaddr[5] = (unsigned char)(macid2_val >> 8); 698 } 699 } 700 701 /* 702 =========================================================================== 703 <<<<<< Exported SubProgram Bodies >>>>>> 704 =========================================================================== 705 */ 706 int ax88180_initialize (bd_t * bis) 707 { 708 struct eth_device *dev; 709 struct ax88180_private *priv; 710 711 dev = (struct eth_device *)malloc (sizeof *dev); 712 713 if (NULL == dev) 714 return 0; 715 716 memset (dev, 0, sizeof *dev); 717 718 priv = (struct ax88180_private *)malloc (sizeof (*priv)); 719 720 if (NULL == priv) 721 return 0; 722 723 memset (priv, 0, sizeof *priv); 724 725 sprintf (dev->name, "ax88180"); 726 dev->iobase = AX88180_BASE; 727 dev->priv = priv; 728 dev->init = ax88180_init; 729 dev->halt = ax88180_halt; 730 dev->send = ax88180_send; 731 dev->recv = ax88180_recv; 732 733 priv->BusWidth = BUS_WIDTH_32; 734 priv->PadSize = 3; 735 #if defined (CONFIG_DRIVER_AX88180_16BIT) 736 OUTW (dev, (START_BASE >> 8), BASE); 737 OUTW (dev, DECODE_EN, DECODE); 738 739 priv->BusWidth = BUS_WIDTH_16; 740 priv->PadSize = 1; 741 #endif 742 743 ax88180_mac_reset (dev); 744 745 /* Disable interrupt */ 746 OUTW (dev, CLEAR_IMR, IMR); 747 748 /* Disable AX88180 TX/RX functions */ 749 OUTW (dev, WAKEMOD, CMD); 750 751 ax88180_read_mac_addr (dev); 752 753 eth_register (dev); 754 755 return ax88180_phy_initial (dev); 756 757 } 758