1 /* 2 * (C) Copyright 2009 3 * Marvell Semiconductor <www.marvell.com> 4 * Written-by: Prafulla Wadaskar <prafulla@marvell.com> 5 * 6 * (C) Copyright 2003 7 * Ingo Assmus <ingo.assmus@keymile.com> 8 * 9 * based on - Driver for MV64360X ethernet ports 10 * Copyright (C) 2002 rabeeh@galileo.co.il 11 * 12 * See file CREDITS for list of people who contributed to this 13 * project. 14 * 15 * This program is free software; you can redistribute it and/or 16 * modify it under the terms of the GNU General Public License as 17 * published by the Free Software Foundation; either version 2 of 18 * the License, or (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 28 * MA 02110-1301 USA 29 */ 30 31 #include <common.h> 32 #include <net.h> 33 #include <malloc.h> 34 #include <miiphy.h> 35 #include <asm/io.h> 36 #include <asm/errno.h> 37 #include <asm/types.h> 38 #include <asm/system.h> 39 #include <asm/byteorder.h> 40 #include <asm/arch/cpu.h> 41 42 #if defined(CONFIG_KIRKWOOD) 43 #include <asm/arch/kirkwood.h> 44 #elif defined(CONFIG_ORION5X) 45 #include <asm/arch/orion5x.h> 46 #endif 47 48 #include "mvgbe.h" 49 50 DECLARE_GLOBAL_DATA_PTR; 51 52 #define MV_PHY_ADR_REQUEST 0xee 53 #define MVGBE_SMI_REG (((struct mvgbe_registers *)MVGBE0_BASE)->smi) 54 55 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) 56 /* 57 * smi_reg_read - miiphy_read callback function. 58 * 59 * Returns 16bit phy register value, or 0xffff on error 60 */ 61 static int smi_reg_read(const char *devname, u8 phy_adr, u8 reg_ofs, u16 * data) 62 { 63 struct eth_device *dev = eth_get_dev_by_name(devname); 64 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 65 struct mvgbe_registers *regs = dmvgbe->regs; 66 u32 smi_reg; 67 u32 timeout; 68 69 /* Phyadr read request */ 70 if (phy_adr == MV_PHY_ADR_REQUEST && 71 reg_ofs == MV_PHY_ADR_REQUEST) { 72 /* */ 73 *data = (u16) (MVGBE_REG_RD(regs->phyadr) & PHYADR_MASK); 74 return 0; 75 } 76 /* check parameters */ 77 if (phy_adr > PHYADR_MASK) { 78 printf("Err..(%s) Invalid PHY address %d\n", 79 __FUNCTION__, phy_adr); 80 return -EFAULT; 81 } 82 if (reg_ofs > PHYREG_MASK) { 83 printf("Err..(%s) Invalid register offset %d\n", 84 __FUNCTION__, reg_ofs); 85 return -EFAULT; 86 } 87 88 timeout = MVGBE_PHY_SMI_TIMEOUT; 89 /* wait till the SMI is not busy */ 90 do { 91 /* read smi register */ 92 smi_reg = MVGBE_REG_RD(MVGBE_SMI_REG); 93 if (timeout-- == 0) { 94 printf("Err..(%s) SMI busy timeout\n", __FUNCTION__); 95 return -EFAULT; 96 } 97 } while (smi_reg & MVGBE_PHY_SMI_BUSY_MASK); 98 99 /* fill the phy address and regiser offset and read opcode */ 100 smi_reg = (phy_adr << MVGBE_PHY_SMI_DEV_ADDR_OFFS) 101 | (reg_ofs << MVGBE_SMI_REG_ADDR_OFFS) 102 | MVGBE_PHY_SMI_OPCODE_READ; 103 104 /* write the smi register */ 105 MVGBE_REG_WR(MVGBE_SMI_REG, smi_reg); 106 107 /*wait till read value is ready */ 108 timeout = MVGBE_PHY_SMI_TIMEOUT; 109 110 do { 111 /* read smi register */ 112 smi_reg = MVGBE_REG_RD(MVGBE_SMI_REG); 113 if (timeout-- == 0) { 114 printf("Err..(%s) SMI read ready timeout\n", 115 __FUNCTION__); 116 return -EFAULT; 117 } 118 } while (!(smi_reg & MVGBE_PHY_SMI_READ_VALID_MASK)); 119 120 /* Wait for the data to update in the SMI register */ 121 for (timeout = 0; timeout < MVGBE_PHY_SMI_TIMEOUT; timeout++) 122 ; 123 124 *data = (u16) (MVGBE_REG_RD(MVGBE_SMI_REG) & MVGBE_PHY_SMI_DATA_MASK); 125 126 debug("%s:(adr %d, off %d) value= %04x\n", __FUNCTION__, phy_adr, 127 reg_ofs, *data); 128 129 return 0; 130 } 131 132 /* 133 * smi_reg_write - imiiphy_write callback function. 134 * 135 * Returns 0 if write succeed, -EINVAL on bad parameters 136 * -ETIME on timeout 137 */ 138 static int smi_reg_write(const char *devname, u8 phy_adr, u8 reg_ofs, u16 data) 139 { 140 struct eth_device *dev = eth_get_dev_by_name(devname); 141 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 142 struct mvgbe_registers *regs = dmvgbe->regs; 143 u32 smi_reg; 144 u32 timeout; 145 146 /* Phyadr write request*/ 147 if (phy_adr == MV_PHY_ADR_REQUEST && 148 reg_ofs == MV_PHY_ADR_REQUEST) { 149 MVGBE_REG_WR(regs->phyadr, data); 150 return 0; 151 } 152 153 /* check parameters */ 154 if (phy_adr > PHYADR_MASK) { 155 printf("Err..(%s) Invalid phy address\n", __FUNCTION__); 156 return -EINVAL; 157 } 158 if (reg_ofs > PHYREG_MASK) { 159 printf("Err..(%s) Invalid register offset\n", __FUNCTION__); 160 return -EINVAL; 161 } 162 163 /* wait till the SMI is not busy */ 164 timeout = MVGBE_PHY_SMI_TIMEOUT; 165 do { 166 /* read smi register */ 167 smi_reg = MVGBE_REG_RD(MVGBE_SMI_REG); 168 if (timeout-- == 0) { 169 printf("Err..(%s) SMI busy timeout\n", __FUNCTION__); 170 return -ETIME; 171 } 172 } while (smi_reg & MVGBE_PHY_SMI_BUSY_MASK); 173 174 /* fill the phy addr and reg offset and write opcode and data */ 175 smi_reg = (data << MVGBE_PHY_SMI_DATA_OFFS); 176 smi_reg |= (phy_adr << MVGBE_PHY_SMI_DEV_ADDR_OFFS) 177 | (reg_ofs << MVGBE_SMI_REG_ADDR_OFFS); 178 smi_reg &= ~MVGBE_PHY_SMI_OPCODE_READ; 179 180 /* write the smi register */ 181 MVGBE_REG_WR(MVGBE_SMI_REG, smi_reg); 182 183 return 0; 184 } 185 #endif 186 187 /* Stop and checks all queues */ 188 static void stop_queue(u32 * qreg) 189 { 190 u32 reg_data; 191 192 reg_data = readl(qreg); 193 194 if (reg_data & 0xFF) { 195 /* Issue stop command for active channels only */ 196 writel((reg_data << 8), qreg); 197 198 /* Wait for all queue activity to terminate. */ 199 do { 200 /* 201 * Check port cause register that all queues 202 * are stopped 203 */ 204 reg_data = readl(qreg); 205 } 206 while (reg_data & 0xFF); 207 } 208 } 209 210 /* 211 * set_access_control - Config address decode parameters for Ethernet unit 212 * 213 * This function configures the address decode parameters for the Gigabit 214 * Ethernet Controller according the given parameters struct. 215 * 216 * @regs Register struct pointer. 217 * @param Address decode parameter struct. 218 */ 219 static void set_access_control(struct mvgbe_registers *regs, 220 struct mvgbe_winparam *param) 221 { 222 u32 access_prot_reg; 223 224 /* Set access control register */ 225 access_prot_reg = MVGBE_REG_RD(regs->epap); 226 /* clear window permission */ 227 access_prot_reg &= (~(3 << (param->win * 2))); 228 access_prot_reg |= (param->access_ctrl << (param->win * 2)); 229 MVGBE_REG_WR(regs->epap, access_prot_reg); 230 231 /* Set window Size reg (SR) */ 232 MVGBE_REG_WR(regs->barsz[param->win].size, 233 (((param->size / 0x10000) - 1) << 16)); 234 235 /* Set window Base address reg (BA) */ 236 MVGBE_REG_WR(regs->barsz[param->win].bar, 237 (param->target | param->attrib | param->base_addr)); 238 /* High address remap reg (HARR) */ 239 if (param->win < 4) 240 MVGBE_REG_WR(regs->ha_remap[param->win], param->high_addr); 241 242 /* Base address enable reg (BARER) */ 243 if (param->enable == 1) 244 MVGBE_REG_BITS_RESET(regs->bare, (1 << param->win)); 245 else 246 MVGBE_REG_BITS_SET(regs->bare, (1 << param->win)); 247 } 248 249 static void set_dram_access(struct mvgbe_registers *regs) 250 { 251 struct mvgbe_winparam win_param; 252 int i; 253 254 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { 255 /* Set access parameters for DRAM bank i */ 256 win_param.win = i; /* Use Ethernet window i */ 257 /* Window target - DDR */ 258 win_param.target = MVGBE_TARGET_DRAM; 259 /* Enable full access */ 260 win_param.access_ctrl = EWIN_ACCESS_FULL; 261 win_param.high_addr = 0; 262 /* Get bank base and size */ 263 win_param.base_addr = gd->bd->bi_dram[i].start; 264 win_param.size = gd->bd->bi_dram[i].size; 265 if (win_param.size == 0) 266 win_param.enable = 0; 267 else 268 win_param.enable = 1; /* Enable the access */ 269 270 /* Enable DRAM bank */ 271 switch (i) { 272 case 0: 273 win_param.attrib = EBAR_DRAM_CS0; 274 break; 275 case 1: 276 win_param.attrib = EBAR_DRAM_CS1; 277 break; 278 case 2: 279 win_param.attrib = EBAR_DRAM_CS2; 280 break; 281 case 3: 282 win_param.attrib = EBAR_DRAM_CS3; 283 break; 284 default: 285 /* invalid bank, disable access */ 286 win_param.enable = 0; 287 win_param.attrib = 0; 288 break; 289 } 290 /* Set the access control for address window(EPAPR) RD/WR */ 291 set_access_control(regs, &win_param); 292 } 293 } 294 295 /* 296 * port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables 297 * 298 * Go through all the DA filter tables (Unicast, Special Multicast & Other 299 * Multicast) and set each entry to 0. 300 */ 301 static void port_init_mac_tables(struct mvgbe_registers *regs) 302 { 303 int table_index; 304 305 /* Clear DA filter unicast table (Ex_dFUT) */ 306 for (table_index = 0; table_index < 4; ++table_index) 307 MVGBE_REG_WR(regs->dfut[table_index], 0); 308 309 for (table_index = 0; table_index < 64; ++table_index) { 310 /* Clear DA filter special multicast table (Ex_dFSMT) */ 311 MVGBE_REG_WR(regs->dfsmt[table_index], 0); 312 /* Clear DA filter other multicast table (Ex_dFOMT) */ 313 MVGBE_REG_WR(regs->dfomt[table_index], 0); 314 } 315 } 316 317 /* 318 * port_uc_addr - This function Set the port unicast address table 319 * 320 * This function locates the proper entry in the Unicast table for the 321 * specified MAC nibble and sets its properties according to function 322 * parameters. 323 * This function add/removes MAC addresses from the port unicast address 324 * table. 325 * 326 * @uc_nibble Unicast MAC Address last nibble. 327 * @option 0 = Add, 1 = remove address. 328 * 329 * RETURN: 1 if output succeeded. 0 if option parameter is invalid. 330 */ 331 static int port_uc_addr(struct mvgbe_registers *regs, u8 uc_nibble, 332 int option) 333 { 334 u32 unicast_reg; 335 u32 tbl_offset; 336 u32 reg_offset; 337 338 /* Locate the Unicast table entry */ 339 uc_nibble = (0xf & uc_nibble); 340 /* Register offset from unicast table base */ 341 tbl_offset = (uc_nibble / 4); 342 /* Entry offset within the above register */ 343 reg_offset = uc_nibble % 4; 344 345 switch (option) { 346 case REJECT_MAC_ADDR: 347 /* 348 * Clear accepts frame bit at specified unicast 349 * DA table entry 350 */ 351 unicast_reg = MVGBE_REG_RD(regs->dfut[tbl_offset]); 352 unicast_reg &= (0xFF << (8 * reg_offset)); 353 MVGBE_REG_WR(regs->dfut[tbl_offset], unicast_reg); 354 break; 355 case ACCEPT_MAC_ADDR: 356 /* Set accepts frame bit at unicast DA filter table entry */ 357 unicast_reg = MVGBE_REG_RD(regs->dfut[tbl_offset]); 358 unicast_reg &= (0xFF << (8 * reg_offset)); 359 unicast_reg |= ((0x01 | (RXUQ << 1)) << (8 * reg_offset)); 360 MVGBE_REG_WR(regs->dfut[tbl_offset], unicast_reg); 361 break; 362 default: 363 return 0; 364 } 365 return 1; 366 } 367 368 /* 369 * port_uc_addr_set - This function Set the port Unicast address. 370 */ 371 static void port_uc_addr_set(struct mvgbe_registers *regs, u8 * p_addr) 372 { 373 u32 mac_h; 374 u32 mac_l; 375 376 mac_l = (p_addr[4] << 8) | (p_addr[5]); 377 mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) | 378 (p_addr[3] << 0); 379 380 MVGBE_REG_WR(regs->macal, mac_l); 381 MVGBE_REG_WR(regs->macah, mac_h); 382 383 /* Accept frames of this address */ 384 port_uc_addr(regs, p_addr[5], ACCEPT_MAC_ADDR); 385 } 386 387 /* 388 * mvgbe_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory. 389 */ 390 static void mvgbe_init_rx_desc_ring(struct mvgbe_device *dmvgbe) 391 { 392 struct mvgbe_rxdesc *p_rx_desc; 393 int i; 394 395 /* initialize the Rx descriptors ring */ 396 p_rx_desc = dmvgbe->p_rxdesc; 397 for (i = 0; i < RINGSZ; i++) { 398 p_rx_desc->cmd_sts = 399 MVGBE_BUFFER_OWNED_BY_DMA | MVGBE_RX_EN_INTERRUPT; 400 p_rx_desc->buf_size = PKTSIZE_ALIGN; 401 p_rx_desc->byte_cnt = 0; 402 p_rx_desc->buf_ptr = dmvgbe->p_rxbuf + i * PKTSIZE_ALIGN; 403 if (i == (RINGSZ - 1)) 404 p_rx_desc->nxtdesc_p = dmvgbe->p_rxdesc; 405 else { 406 p_rx_desc->nxtdesc_p = (struct mvgbe_rxdesc *) 407 ((u32) p_rx_desc + MV_RXQ_DESC_ALIGNED_SIZE); 408 p_rx_desc = p_rx_desc->nxtdesc_p; 409 } 410 } 411 dmvgbe->p_rxdesc_curr = dmvgbe->p_rxdesc; 412 } 413 414 static int mvgbe_init(struct eth_device *dev) 415 { 416 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 417 struct mvgbe_registers *regs = dmvgbe->regs; 418 #if (defined (CONFIG_MII) || defined (CONFIG_CMD_MII)) \ 419 && defined (CONFIG_SYS_FAULT_ECHO_LINK_DOWN) 420 int i; 421 #endif 422 /* setup RX rings */ 423 mvgbe_init_rx_desc_ring(dmvgbe); 424 425 /* Clear the ethernet port interrupts */ 426 MVGBE_REG_WR(regs->ic, 0); 427 MVGBE_REG_WR(regs->ice, 0); 428 /* Unmask RX buffer and TX end interrupt */ 429 MVGBE_REG_WR(regs->pim, INT_CAUSE_UNMASK_ALL); 430 /* Unmask phy and link status changes interrupts */ 431 MVGBE_REG_WR(regs->peim, INT_CAUSE_UNMASK_ALL_EXT); 432 433 set_dram_access(regs); 434 port_init_mac_tables(regs); 435 port_uc_addr_set(regs, dmvgbe->dev.enetaddr); 436 437 /* Assign port configuration and command. */ 438 MVGBE_REG_WR(regs->pxc, PRT_CFG_VAL); 439 MVGBE_REG_WR(regs->pxcx, PORT_CFG_EXTEND_VALUE); 440 MVGBE_REG_WR(regs->psc0, PORT_SERIAL_CONTROL_VALUE); 441 442 /* Assign port SDMA configuration */ 443 MVGBE_REG_WR(regs->sdc, PORT_SDMA_CFG_VALUE); 444 MVGBE_REG_WR(regs->tqx[0].qxttbc, QTKNBKT_DEF_VAL); 445 MVGBE_REG_WR(regs->tqx[0].tqxtbc, 446 (QMTBS_DEF_VAL << 16) | QTKNRT_DEF_VAL); 447 /* Turn off the port/RXUQ bandwidth limitation */ 448 MVGBE_REG_WR(regs->pmtu, 0); 449 450 /* Set maximum receive buffer to 9700 bytes */ 451 MVGBE_REG_WR(regs->psc0, MVGBE_MAX_RX_PACKET_9700BYTE 452 | (MVGBE_REG_RD(regs->psc0) & MRU_MASK)); 453 454 /* Enable port initially */ 455 MVGBE_REG_BITS_SET(regs->psc0, MVGBE_SERIAL_PORT_EN); 456 457 /* 458 * Set ethernet MTU for leaky bucket mechanism to 0 - this will 459 * disable the leaky bucket mechanism . 460 */ 461 MVGBE_REG_WR(regs->pmtu, 0); 462 463 /* Assignment of Rx CRDB of given RXUQ */ 464 MVGBE_REG_WR(regs->rxcdp[RXUQ], (u32) dmvgbe->p_rxdesc_curr); 465 /* ensure previous write is done before enabling Rx DMA */ 466 isb(); 467 /* Enable port Rx. */ 468 MVGBE_REG_WR(regs->rqc, (1 << RXUQ)); 469 470 #if (defined (CONFIG_MII) || defined (CONFIG_CMD_MII)) \ 471 && defined (CONFIG_SYS_FAULT_ECHO_LINK_DOWN) 472 /* Wait up to 5s for the link status */ 473 for (i = 0; i < 5; i++) { 474 u16 phyadr; 475 476 miiphy_read(dev->name, MV_PHY_ADR_REQUEST, 477 MV_PHY_ADR_REQUEST, &phyadr); 478 /* Return if we get link up */ 479 if (miiphy_link(dev->name, phyadr)) 480 return 0; 481 udelay(1000000); 482 } 483 484 printf("No link on %s\n", dev->name); 485 return -1; 486 #endif 487 return 0; 488 } 489 490 static int mvgbe_halt(struct eth_device *dev) 491 { 492 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 493 struct mvgbe_registers *regs = dmvgbe->regs; 494 495 /* Disable all gigE address decoder */ 496 MVGBE_REG_WR(regs->bare, 0x3f); 497 498 stop_queue(®s->tqc); 499 stop_queue(®s->rqc); 500 501 /* Disable port */ 502 MVGBE_REG_BITS_RESET(regs->psc0, MVGBE_SERIAL_PORT_EN); 503 /* Set port is not reset */ 504 MVGBE_REG_BITS_RESET(regs->psc1, 1 << 4); 505 #ifdef CONFIG_SYS_MII_MODE 506 /* Set MMI interface up */ 507 MVGBE_REG_BITS_RESET(regs->psc1, 1 << 3); 508 #endif 509 /* Disable & mask ethernet port interrupts */ 510 MVGBE_REG_WR(regs->ic, 0); 511 MVGBE_REG_WR(regs->ice, 0); 512 MVGBE_REG_WR(regs->pim, 0); 513 MVGBE_REG_WR(regs->peim, 0); 514 515 return 0; 516 } 517 518 static int mvgbe_write_hwaddr(struct eth_device *dev) 519 { 520 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 521 struct mvgbe_registers *regs = dmvgbe->regs; 522 523 /* Programs net device MAC address after initialization */ 524 port_uc_addr_set(regs, dmvgbe->dev.enetaddr); 525 return 0; 526 } 527 528 static int mvgbe_send(struct eth_device *dev, void *dataptr, 529 int datasize) 530 { 531 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 532 struct mvgbe_registers *regs = dmvgbe->regs; 533 struct mvgbe_txdesc *p_txdesc = dmvgbe->p_txdesc; 534 void *p = (void *)dataptr; 535 u32 cmd_sts; 536 u32 txuq0_reg_addr; 537 538 /* Copy buffer if it's misaligned */ 539 if ((u32) dataptr & 0x07) { 540 if (datasize > PKTSIZE_ALIGN) { 541 printf("Non-aligned data too large (%d)\n", 542 datasize); 543 return -1; 544 } 545 546 memcpy(dmvgbe->p_aligned_txbuf, p, datasize); 547 p = dmvgbe->p_aligned_txbuf; 548 } 549 550 p_txdesc->cmd_sts = MVGBE_ZERO_PADDING | MVGBE_GEN_CRC; 551 p_txdesc->cmd_sts |= MVGBE_TX_FIRST_DESC | MVGBE_TX_LAST_DESC; 552 p_txdesc->cmd_sts |= MVGBE_BUFFER_OWNED_BY_DMA; 553 p_txdesc->cmd_sts |= MVGBE_TX_EN_INTERRUPT; 554 p_txdesc->buf_ptr = (u8 *) p; 555 p_txdesc->byte_cnt = datasize; 556 557 /* Set this tc desc as zeroth TXUQ */ 558 txuq0_reg_addr = (u32)®s->tcqdp[TXUQ]; 559 writel((u32) p_txdesc, txuq0_reg_addr); 560 561 /* ensure tx desc writes above are performed before we start Tx DMA */ 562 isb(); 563 564 /* Apply send command using zeroth TXUQ */ 565 MVGBE_REG_WR(regs->tqc, (1 << TXUQ)); 566 567 /* 568 * wait for packet xmit completion 569 */ 570 cmd_sts = readl(&p_txdesc->cmd_sts); 571 while (cmd_sts & MVGBE_BUFFER_OWNED_BY_DMA) { 572 /* return fail if error is detected */ 573 if ((cmd_sts & (MVGBE_ERROR_SUMMARY | MVGBE_TX_LAST_FRAME)) == 574 (MVGBE_ERROR_SUMMARY | MVGBE_TX_LAST_FRAME) && 575 cmd_sts & (MVGBE_UR_ERROR | MVGBE_RL_ERROR)) { 576 printf("Err..(%s) in xmit packet\n", __FUNCTION__); 577 return -1; 578 } 579 cmd_sts = readl(&p_txdesc->cmd_sts); 580 }; 581 return 0; 582 } 583 584 static int mvgbe_recv(struct eth_device *dev) 585 { 586 struct mvgbe_device *dmvgbe = to_mvgbe(dev); 587 struct mvgbe_rxdesc *p_rxdesc_curr = dmvgbe->p_rxdesc_curr; 588 u32 cmd_sts; 589 u32 timeout = 0; 590 u32 rxdesc_curr_addr; 591 592 /* wait untill rx packet available or timeout */ 593 do { 594 if (timeout < MVGBE_PHY_SMI_TIMEOUT) 595 timeout++; 596 else { 597 debug("%s time out...\n", __FUNCTION__); 598 return -1; 599 } 600 } while (readl(&p_rxdesc_curr->cmd_sts) & MVGBE_BUFFER_OWNED_BY_DMA); 601 602 if (p_rxdesc_curr->byte_cnt != 0) { 603 debug("%s: Received %d byte Packet @ 0x%x (cmd_sts= %08x)\n", 604 __FUNCTION__, (u32) p_rxdesc_curr->byte_cnt, 605 (u32) p_rxdesc_curr->buf_ptr, 606 (u32) p_rxdesc_curr->cmd_sts); 607 } 608 609 /* 610 * In case received a packet without first/last bits on 611 * OR the error summary bit is on, 612 * the packets needs to be dropeed. 613 */ 614 cmd_sts = readl(&p_rxdesc_curr->cmd_sts); 615 616 if ((cmd_sts & 617 (MVGBE_RX_FIRST_DESC | MVGBE_RX_LAST_DESC)) 618 != (MVGBE_RX_FIRST_DESC | MVGBE_RX_LAST_DESC)) { 619 620 printf("Err..(%s) Dropping packet spread on" 621 " multiple descriptors\n", __FUNCTION__); 622 623 } else if (cmd_sts & MVGBE_ERROR_SUMMARY) { 624 625 printf("Err..(%s) Dropping packet with errors\n", 626 __FUNCTION__); 627 628 } else { 629 /* !!! call higher layer processing */ 630 debug("%s: Sending Received packet to" 631 " upper layer (NetReceive)\n", __FUNCTION__); 632 633 /* let the upper layer handle the packet */ 634 NetReceive((p_rxdesc_curr->buf_ptr + RX_BUF_OFFSET), 635 (int)(p_rxdesc_curr->byte_cnt - RX_BUF_OFFSET)); 636 } 637 /* 638 * free these descriptors and point next in the ring 639 */ 640 p_rxdesc_curr->cmd_sts = 641 MVGBE_BUFFER_OWNED_BY_DMA | MVGBE_RX_EN_INTERRUPT; 642 p_rxdesc_curr->buf_size = PKTSIZE_ALIGN; 643 p_rxdesc_curr->byte_cnt = 0; 644 645 rxdesc_curr_addr = (u32)&dmvgbe->p_rxdesc_curr; 646 writel((unsigned)p_rxdesc_curr->nxtdesc_p, rxdesc_curr_addr); 647 648 return 0; 649 } 650 651 int mvgbe_initialize(bd_t *bis) 652 { 653 struct mvgbe_device *dmvgbe; 654 struct eth_device *dev; 655 int devnum; 656 u8 used_ports[MAX_MVGBE_DEVS] = CONFIG_MVGBE_PORTS; 657 658 for (devnum = 0; devnum < MAX_MVGBE_DEVS; devnum++) { 659 /*skip if port is configured not to use */ 660 if (used_ports[devnum] == 0) 661 continue; 662 663 dmvgbe = malloc(sizeof(struct mvgbe_device)); 664 665 if (!dmvgbe) 666 goto error1; 667 668 memset(dmvgbe, 0, sizeof(struct mvgbe_device)); 669 670 dmvgbe->p_rxdesc = 671 (struct mvgbe_rxdesc *)memalign(PKTALIGN, 672 MV_RXQ_DESC_ALIGNED_SIZE*RINGSZ + 1); 673 674 if (!dmvgbe->p_rxdesc) 675 goto error2; 676 677 dmvgbe->p_rxbuf = (u8 *) memalign(PKTALIGN, 678 RINGSZ*PKTSIZE_ALIGN + 1); 679 680 if (!dmvgbe->p_rxbuf) 681 goto error3; 682 683 dmvgbe->p_aligned_txbuf = memalign(8, PKTSIZE_ALIGN); 684 685 if (!dmvgbe->p_aligned_txbuf) 686 goto error4; 687 688 dmvgbe->p_txdesc = (struct mvgbe_txdesc *) memalign( 689 PKTALIGN, sizeof(struct mvgbe_txdesc) + 1); 690 691 if (!dmvgbe->p_txdesc) { 692 free(dmvgbe->p_aligned_txbuf); 693 error4: 694 free(dmvgbe->p_rxbuf); 695 error3: 696 free(dmvgbe->p_rxdesc); 697 error2: 698 free(dmvgbe); 699 error1: 700 printf("Err.. %s Failed to allocate memory\n", 701 __FUNCTION__); 702 return -1; 703 } 704 705 dev = &dmvgbe->dev; 706 707 /* must be less than sizeof(dev->name) */ 708 sprintf(dev->name, "egiga%d", devnum); 709 710 switch (devnum) { 711 case 0: 712 dmvgbe->regs = (void *)MVGBE0_BASE; 713 break; 714 #if defined(MVGBE1_BASE) 715 case 1: 716 dmvgbe->regs = (void *)MVGBE1_BASE; 717 break; 718 #endif 719 default: /* this should never happen */ 720 printf("Err..(%s) Invalid device number %d\n", 721 __FUNCTION__, devnum); 722 return -1; 723 } 724 725 dev->init = (void *)mvgbe_init; 726 dev->halt = (void *)mvgbe_halt; 727 dev->send = (void *)mvgbe_send; 728 dev->recv = (void *)mvgbe_recv; 729 dev->write_hwaddr = (void *)mvgbe_write_hwaddr; 730 731 eth_register(dev); 732 733 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) 734 miiphy_register(dev->name, smi_reg_read, smi_reg_write); 735 /* Set phy address of the port */ 736 miiphy_write(dev->name, MV_PHY_ADR_REQUEST, 737 MV_PHY_ADR_REQUEST, PHY_BASE_ADR + devnum); 738 #endif 739 } 740 return 0; 741 } 742