2 * (C) Copyright 2003-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * This file is based on mpc4200fec.c,
6 * (C) Copyright Motorola, Inc., 2000
17 /* #define DEBUG 0x28 */
19 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) && \
20 defined(CONFIG_MPC5xxx_FEC)
23 static void tfifo_print(mpc5xxx_fec_priv *fec);
24 static void rfifo_print(mpc5xxx_fec_priv *fec);
28 static uint32 local_crc32(char *string, unsigned int crc_value, int len);
32 uint8 data[1500]; /* actual data */
33 int length; /* actual length */
34 int used; /* buffer in use or not */
35 uint8 head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */
38 /********************************************************************/
40 static void mpc5xxx_fec_phydump (void)
43 uint8 phyAddr = CONFIG_PHY_ADDR;
45 #if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
46 /* regs to print: 0...7, 16...19, 21, 23, 24 */
47 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
48 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
50 /* regs to print: 0...8, 16...20 */
51 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
52 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
56 for (i = 0; i < 32; i++) {
58 miiphy_read(phyAddr, i, &phyStatus);
59 printf("Mii reg %d: 0x%04x\n", i, phyStatus);
65 /********************************************************************/
66 static int mpc5xxx_fec_rbd_init(mpc5xxx_fec_priv *fec)
72 for (ix = 0; ix < FEC_RBD_NUM; ix++) {
74 data = (char *)malloc(FEC_MAX_PKT_SIZE);
76 printf ("RBD INIT FAILED\n");
79 fec->rbdBase[ix].dataPointer = (uint32)data;
81 fec->rbdBase[ix].status = FEC_RBD_EMPTY;
82 fec->rbdBase[ix].dataLength = 0;
87 * have the last RBD to close the ring
89 fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
95 /********************************************************************/
96 static void mpc5xxx_fec_tbd_init(mpc5xxx_fec_priv *fec)
100 for (ix = 0; ix < FEC_TBD_NUM; ix++) {
101 fec->tbdBase[ix].status = 0;
105 * Have the last TBD to close the ring
107 fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
110 * Initialize some indices
113 fec->usedTbdIndex = 0;
114 fec->cleanTbdNum = FEC_TBD_NUM;
117 /********************************************************************/
118 static void mpc5xxx_fec_rbd_clean(mpc5xxx_fec_priv *fec, volatile FEC_RBD * pRbd)
121 * Reset buffer descriptor as empty
123 if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
124 pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
126 pRbd->status = FEC_RBD_EMPTY;
128 pRbd->dataLength = 0;
131 * Now, we have an empty RxBD, restart the SmartDMA receive task
133 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
138 fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
141 /********************************************************************/
142 static void mpc5xxx_fec_tbd_scrub(mpc5xxx_fec_priv *fec)
144 volatile FEC_TBD *pUsedTbd;
147 printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
148 fec->cleanTbdNum, fec->usedTbdIndex);
152 * process all the consumed TBDs
154 while (fec->cleanTbdNum < FEC_TBD_NUM) {
155 pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
156 if (pUsedTbd->status & FEC_TBD_READY) {
158 printf("Cannot clean TBD %d, in use\n", fec->cleanTbdNum);
164 * clean this buffer descriptor
166 if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
167 pUsedTbd->status = FEC_TBD_WRAP;
169 pUsedTbd->status = 0;
172 * update some indeces for a correct handling of the TBD ring
175 fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
179 /********************************************************************/
180 static void mpc5xxx_fec_set_hwaddr(mpc5xxx_fec_priv *fec, char *mac)
182 uint8 currByte; /* byte for which to compute the CRC */
183 int byte; /* loop - counter */
184 int bit; /* loop - counter */
185 uint32 crc = 0xffffffff; /* initial value */
188 * The algorithm used is the following:
189 * we loop on each of the six bytes of the provided address,
190 * and we compute the CRC by left-shifting the previous
191 * value by one position, so that each bit in the current
192 * byte of the address may contribute the calculation. If
193 * the latter and the MSB in the CRC are different, then
194 * the CRC value so computed is also ex-ored with the
195 * "polynomium generator". The current byte of the address
196 * is also shifted right by one bit at each iteration.
197 * This is because the CRC generatore in hardware is implemented
198 * as a shift-register with as many ex-ores as the radixes
199 * in the polynomium. This suggests that we represent the
200 * polynomiumm itself as a 32-bit constant.
202 for (byte = 0; byte < 6; byte++) {
203 currByte = mac[byte];
204 for (bit = 0; bit < 8; bit++) {
205 if ((currByte & 0x01) ^ (crc & 0x01)) {
207 crc = crc ^ 0xedb88320;
218 * Set individual hash table register
221 fec->eth->iaddr1 = (1 << (crc - 32));
222 fec->eth->iaddr2 = 0;
224 fec->eth->iaddr1 = 0;
225 fec->eth->iaddr2 = (1 << crc);
229 * Set physical address
231 fec->eth->paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
232 fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
235 /********************************************************************/
236 static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
238 DECLARE_GLOBAL_DATA_PTR;
239 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
240 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
243 printf ("mpc5xxx_fec_init... Begin\n");
247 * Initialize RxBD/TxBD rings
249 mpc5xxx_fec_rbd_init(fec);
250 mpc5xxx_fec_tbd_init(fec);
253 * Clear FEC-Lite interrupt event register(IEVENT)
255 fec->eth->ievent = 0xffffffff;
258 * Set interrupt mask register
260 fec->eth->imask = 0x00000000;
263 * Set FEC-Lite receive control register(R_CNTRL):
265 if (fec->xcv_type == SEVENWIRE) {
267 * Frame length=1518; 7-wire mode
269 fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
272 * Frame length=1518; MII mode;
274 fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
277 fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
278 if (fec->xcv_type != SEVENWIRE) {
280 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
281 * and do not drop the Preamble.
283 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
287 * Set Opcode/Pause Duration Register
289 fec->eth->op_pause = 0x00010020; /*FIXME0xffff0020; */
292 * Set Rx FIFO alarm and granularity value
294 fec->eth->rfifo_cntrl = 0x0c000000;
295 fec->eth->rfifo_alarm = 0x0000030c;
297 if (fec->eth->rfifo_status & 0x00700000 ) {
298 printf("mpc5xxx_fec_init() RFIFO error\n");
303 * Set Tx FIFO granularity value
305 fec->eth->tfifo_cntrl = 0x0c000000;
307 printf("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
308 printf("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
312 * Set transmit fifo watermark register(X_WMRK), default = 64
314 fec->eth->tfifo_alarm = 0x00000080;
315 fec->eth->x_wmrk = 0x2;
318 * Set individual address filter for unicast address
319 * and set physical address registers.
321 mpc5xxx_fec_set_hwaddr(fec, dev->enetaddr);
324 * Set multicast address filter
326 fec->eth->gaddr1 = 0x00000000;
327 fec->eth->gaddr2 = 0x00000000;
330 * Turn ON cheater FSM: ????
332 fec->eth->xmit_fsm = 0x03000000;
334 #if defined(CONFIG_MPC5200)
336 * Turn off COMM bus prefetch in the MGT5200 BestComm. It doesn't
337 * work w/ the current receive task.
339 sdma->PtdCntrl |= 0x00000001;
343 * Set priority of different initiators
345 sdma->IPR0 = 7; /* always */
346 sdma->IPR3 = 6; /* Eth RX */
347 sdma->IPR4 = 5; /* Eth Tx */
350 * Clear SmartDMA task interrupt pending bits
352 SDMA_CLEAR_IEVENT(FEC_RECV_TASK_NO);
355 * Initialize SmartDMA parameters stored in SRAM
357 *(volatile int *)FEC_TBD_BASE = (int)fec->tbdBase;
358 *(volatile int *)FEC_RBD_BASE = (int)fec->rbdBase;
359 *(volatile int *)FEC_TBD_NEXT = (int)fec->tbdBase;
360 *(volatile int *)FEC_RBD_NEXT = (int)fec->rbdBase;
363 * Enable FEC-Lite controller
365 fec->eth->ecntrl |= 0x00000006;
368 if (fec->xcv_type != SEVENWIRE)
369 mpc5xxx_fec_phydump ();
373 * Enable SmartDMA receive task
375 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
378 printf("mpc5xxx_fec_init... Done \n");
384 /********************************************************************/
385 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
387 DECLARE_GLOBAL_DATA_PTR;
388 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
389 const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
392 printf ("mpc5xxx_fec_init_phy... Begin\n");
396 * Initialize GPIO pins
398 if (fec->xcv_type == SEVENWIRE) {
399 /* 10MBit with 7-wire operation */
400 #if defined(CONFIG_TOTAL5200)
401 /* 7-wire and USB2 on Ethernet */
402 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00030000;
403 #else /* !CONFIG_TOTAL5200 */
405 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00020000;
406 #endif /* CONFIG_TOTAL5200 */
408 /* 100MBit with MD operation */
409 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00050000;
413 * Clear FEC-Lite interrupt event register(IEVENT)
415 fec->eth->ievent = 0xffffffff;
418 * Set interrupt mask register
420 fec->eth->imask = 0x00000000;
422 if (fec->xcv_type != SEVENWIRE) {
424 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
425 * and do not drop the Preamble.
427 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
430 if (fec->xcv_type != SEVENWIRE) {
432 * Initialize PHY(LXT971A):
434 * Generally, on power up, the LXT971A reads its configuration
435 * pins to check for forced operation, If not cofigured for
436 * forced operation, it uses auto-negotiation/parallel detection
437 * to automatically determine line operating conditions.
438 * If the PHY device on the other side of the link supports
439 * auto-negotiation, the LXT971A auto-negotiates with it
440 * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
441 * support auto-negotiation, the LXT971A automatically detects
442 * the presence of either link pulses(10Mbps PHY) or Idle
443 * symbols(100Mbps) and sets its operating conditions accordingly.
445 * When auto-negotiation is controlled by software, the following
446 * steps are recommended.
449 * The physical address is dependent on hardware configuration.
456 * Reset PHY, then delay 300ns
458 miiphy_write(phyAddr, 0x0, 0x8000);
461 if (fec->xcv_type == MII10) {
463 * Force 10Base-T, FDX operation
466 printf("Forcing 10 Mbps ethernet link... ");
468 miiphy_read(phyAddr, 0x1, &phyStatus);
470 miiphy_write(fec, phyAddr, 0x0, 0x0100);
472 miiphy_write(phyAddr, 0x0, 0x0180);
475 do { /* wait for link status to go down */
477 if ((timeout--) == 0) {
479 printf("hmmm, should not have waited...");
483 miiphy_read(phyAddr, 0x1, &phyStatus);
487 } while ((phyStatus & 0x0004)); /* !link up */
490 do { /* wait for link status to come back up */
492 if ((timeout--) == 0) {
493 printf("failed. Link is down.\n");
496 miiphy_read(phyAddr, 0x1, &phyStatus);
500 } while (!(phyStatus & 0x0004)); /* !link up */
505 } else { /* MII100 */
507 * Set the auto-negotiation advertisement register bits
509 miiphy_write(phyAddr, 0x4, 0x01e1);
512 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
514 miiphy_write(phyAddr, 0x0, 0x1200);
517 * Wait for AN completion
523 if ((timeout--) == 0) {
525 printf("PHY auto neg 0 failed...\n");
530 if (miiphy_read(phyAddr, 0x1, &phyStatus) != 0) {
532 printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
536 } while (!(phyStatus & 0x0004));
539 printf("PHY auto neg complete! \n");
546 if (fec->xcv_type != SEVENWIRE)
547 mpc5xxx_fec_phydump ();
552 printf("mpc5xxx_fec_init_phy... Done \n");
558 /********************************************************************/
559 static void mpc5xxx_fec_halt(struct eth_device *dev)
561 #if defined(CONFIG_MPC5200)
562 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
564 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
565 int counter = 0xffff;
568 if (fec->xcv_type != SEVENWIRE)
569 mpc5xxx_fec_phydump ();
573 * mask FEC chip interrupts
578 * issue graceful stop command to the FEC transmitter if necessary
580 fec->eth->x_cntrl |= 0x00000001;
583 * wait for graceful stop to register
585 while ((counter--) && (!(fec->eth->ievent & 0x10000000))) ;
588 * Disable SmartDMA tasks
590 SDMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
591 SDMA_TASK_DISABLE (FEC_RECV_TASK_NO);
593 #if defined(CONFIG_MPC5200)
595 * Turn on COMM bus prefetch in the MGT5200 BestComm after we're
596 * done. It doesn't work w/ the current receive task.
598 sdma->PtdCntrl &= ~0x00000001;
602 * Disable the Ethernet Controller
604 fec->eth->ecntrl &= 0xfffffffd;
607 * Clear FIFO status registers
609 fec->eth->rfifo_status &= 0x00700000;
610 fec->eth->tfifo_status &= 0x00700000;
612 fec->eth->reset_cntrl = 0x01000000;
615 * Issue a reset command to the FEC chip
617 fec->eth->ecntrl |= 0x1;
620 * wait at least 16 clock cycles
625 printf("Ethernet task stopped\n");
630 /********************************************************************/
632 static void tfifo_print(mpc5xxx_fec_priv *fec)
634 uint16 phyAddr = CONFIG_PHY_ADDR;
637 if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
638 || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
640 miiphy_read(phyAddr, 0x1, &phyStatus);
641 printf("\nphyStatus: 0x%04x\n", phyStatus);
642 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
643 printf("ievent: 0x%08x\n", fec->eth->ievent);
644 printf("x_status: 0x%08x\n", fec->eth->x_status);
645 printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
647 printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
648 printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
649 printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
650 printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
651 printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
652 printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
656 static void rfifo_print(mpc5xxx_fec_priv *fec)
658 uint16 phyAddr = CONFIG_PHY_ADDR;
661 if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
662 || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
664 miiphy_read(phyAddr, 0x1, &phyStatus);
665 printf("\nphyStatus: 0x%04x\n", phyStatus);
666 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
667 printf("ievent: 0x%08x\n", fec->eth->ievent);
668 printf("x_status: 0x%08x\n", fec->eth->x_status);
669 printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
671 printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
672 printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
673 printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
674 printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
675 printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
676 printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
681 /********************************************************************/
683 static int mpc5xxx_fec_send(struct eth_device *dev, volatile void *eth_data,
687 * This routine transmits one frame. This routine only accepts
688 * 6-byte Ethernet addresses.
690 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
691 volatile FEC_TBD *pTbd;
694 printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
699 * Clear Tx BD ring at first
701 mpc5xxx_fec_tbd_scrub(fec);
704 * Check for valid length of data.
706 if ((data_length > 1500) || (data_length <= 0)) {
711 * Check the number of vacant TxBDs.
713 if (fec->cleanTbdNum < 1) {
715 printf("No available TxBDs ...\n");
721 * Get the first TxBD to send the mac header
723 pTbd = &fec->tbdBase[fec->tbdIndex];
724 pTbd->dataLength = data_length;
725 pTbd->dataPointer = (uint32)eth_data;
726 pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
727 fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
730 printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
736 if (fec->xcv_type != SEVENWIRE) {
738 miiphy_read(0, 0x1, &phyStatus);
742 * Enable SmartDMA transmit task
748 SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
756 fec->cleanTbdNum -= 1;
758 #if (DEBUG & 0x129) && (DEBUG & 0x80000000)
759 printf ("smartDMA ethernet Tx task enabled\n");
762 * wait until frame is sent .
764 while (pTbd->status & FEC_TBD_READY) {
767 printf ("TDB status = %04x\n", pTbd->status);
775 /********************************************************************/
776 static int mpc5xxx_fec_recv(struct eth_device *dev)
779 * This command pulls one frame from the card
781 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
782 volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
783 unsigned long ievent;
784 int frame_length, len = 0;
786 char buff[FEC_MAX_PKT_SIZE];
789 printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
796 * Check if any critical events have happened
798 ievent = fec->eth->ievent;
799 fec->eth->ievent = ievent;
800 if (ievent & 0x20060000) {
801 /* BABT, Rx/Tx FIFO errors */
802 mpc5xxx_fec_halt(dev);
803 mpc5xxx_fec_init(dev, NULL);
806 if (ievent & 0x80000000) {
807 /* Heartbeat error */
808 fec->eth->x_cntrl |= 0x00000001;
810 if (ievent & 0x10000000) {
811 /* Graceful stop complete */
812 if (fec->eth->x_cntrl & 0x00000001) {
813 mpc5xxx_fec_halt(dev);
814 fec->eth->x_cntrl &= ~0x00000001;
815 mpc5xxx_fec_init(dev, NULL);
819 if (!(pRbd->status & FEC_RBD_EMPTY)) {
820 if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
821 ((pRbd->dataLength - 4) > 14)) {
824 * Get buffer address and size
826 frame = (NBUF *)pRbd->dataPointer;
827 frame_length = pRbd->dataLength - 4;
832 printf("recv data hdr:");
833 for (i = 0; i < 14; i++)
834 printf("%x ", *(frame->head + i));
839 * Fill the buffer and pass it to upper layers
841 memcpy(buff, frame->head, 14);
842 memcpy(buff + 14, frame->data, frame_length);
843 NetReceive(buff, frame_length);
847 * Reset buffer descriptor as empty
849 mpc5xxx_fec_rbd_clean(fec, pRbd);
851 SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
856 /********************************************************************/
857 int mpc5xxx_fec_initialize(bd_t * bis)
859 mpc5xxx_fec_priv *fec;
860 struct eth_device *dev;
862 char env_enetaddr[6];
865 fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
866 dev = (struct eth_device *)malloc(sizeof(*dev));
867 memset(dev, 0, sizeof *dev);
869 fec->eth = (ethernet_regs *)MPC5XXX_FEC;
870 fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
871 fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
872 #if defined(CONFIG_CANMB) || defined(CONFIG_HMI1001) || \
873 defined(CONFIG_ICECUBE) || defined(CONFIG_INKA4X0) || \
874 defined(CONFIG_PM520) || defined(CONFIG_TOP5200) || \
875 defined(CONFIG_TQM5200)
876 # ifndef CONFIG_FEC_10MBIT
877 fec->xcv_type = MII100;
879 fec->xcv_type = MII10;
881 #elif defined(CONFIG_TOTAL5200)
882 fec->xcv_type = SEVENWIRE;
884 #error fec->xcv_type not initialized.
887 dev->priv = (void *)fec;
888 dev->iobase = MPC5XXX_FEC;
889 dev->init = mpc5xxx_fec_init;
890 dev->halt = mpc5xxx_fec_halt;
891 dev->send = mpc5xxx_fec_send;
892 dev->recv = mpc5xxx_fec_recv;
894 sprintf(dev->name, "FEC ETHERNET");
898 * Try to set the mac address now. The fec mac address is
899 * a garbage after reset. When not using fec for booting
900 * the Linux fec driver will try to work with this garbage.
902 tmp = getenv("ethaddr");
904 for (i=0; i<6; i++) {
905 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
907 tmp = (*end) ? end+1 : end;
909 mpc5xxx_fec_set_hwaddr(fec, env_enetaddr);
912 mpc5xxx_fec_init_phy(dev, bis);
916 /* MII-interface related functions */
917 /********************************************************************/
918 int miiphy_read(uint8 phyAddr, uint8 regAddr, uint16 * retVal)
920 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
921 uint32 reg; /* convenient holder for the PHY register */
922 uint32 phy; /* convenient holder for the PHY */
923 int timeout = 0xffff;
926 * reading from any PHY's register is done by properly
927 * programming the FEC's MII data register.
929 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
930 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
932 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg);
935 * wait for the related interrupt
937 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
941 printf ("Read MDIO failed...\n");
947 * clear mii interrupt bit
949 eth->ievent = 0x00800000;
952 * it's now safe to read the PHY's register
954 *retVal = (uint16) eth->mii_data;
959 /********************************************************************/
960 int miiphy_write(uint8 phyAddr, uint8 regAddr, uint16 data)
962 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
963 uint32 reg; /* convenient holder for the PHY register */
964 uint32 phy; /* convenient holder for the PHY */
965 int timeout = 0xffff;
967 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
968 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
970 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
971 FEC_MII_DATA_TA | phy | reg | data);
974 * wait for the MII interrupt
976 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
980 printf ("Write MDIO failed...\n");
986 * clear MII interrupt bit
988 eth->ievent = 0x00800000;
994 static uint32 local_crc32(char *string, unsigned int crc_value, int len)
998 unsigned int crc, count;
1004 * crc = 0xffffffff; * The initialized value should be 0xffffffff
1008 for (i = len; --i >= 0;) {
1010 for (count = 0; count < 8; count++) {
1011 if ((c & 0x01) ^ (crc & 0x01)) {
1013 crc = crc ^ 0xedb88320;
1022 * In big endian system, do byte swaping for crc value
1028 #endif /* CONFIG_MPC5xxx_FEC */