2 * (C) Copyright 2003-2010
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * This file is based on mpc4200fec.c,
6 * (C) Copyright Motorola, Inc., 2000
11 #include <mpc5xxx_sdma.h>
16 #include "mpc5xxx_fec.h"
18 DECLARE_GLOBAL_DATA_PTR;
20 /* #define DEBUG 0x28 */
22 #if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
23 #error "CONFIG_MII has to be defined!"
27 static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec);
28 static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec);
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 int fec5xxx_miiphy_read(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 *retVal);
39 int fec5xxx_miiphy_write(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 data);
41 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis);
43 /********************************************************************/
45 static void mpc5xxx_fec_phydump (char *devname)
48 uint8 phyAddr = CONFIG_PHY_ADDR;
50 #if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
51 /* regs to print: 0...7, 16...19, 21, 23, 24 */
52 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
53 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
55 /* regs to print: 0...8, 16...20 */
56 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
57 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 for (i = 0; i < 32; i++) {
63 miiphy_read(devname, phyAddr, i, &phyStatus);
64 printf("Mii reg %d: 0x%04x\n", i, phyStatus);
70 /********************************************************************/
71 static int mpc5xxx_fec_rbd_init(mpc5xxx_fec_priv *fec)
77 for (ix = 0; ix < FEC_RBD_NUM; ix++) {
79 data = (char *)malloc(FEC_MAX_PKT_SIZE);
81 printf ("RBD INIT FAILED\n");
84 fec->rbdBase[ix].dataPointer = (uint32)data;
86 fec->rbdBase[ix].status = FEC_RBD_EMPTY;
87 fec->rbdBase[ix].dataLength = 0;
92 * have the last RBD to close the ring
94 fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
100 /********************************************************************/
101 static void mpc5xxx_fec_tbd_init(mpc5xxx_fec_priv *fec)
105 for (ix = 0; ix < FEC_TBD_NUM; ix++) {
106 fec->tbdBase[ix].status = 0;
110 * Have the last TBD to close the ring
112 fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
115 * Initialize some indices
118 fec->usedTbdIndex = 0;
119 fec->cleanTbdNum = FEC_TBD_NUM;
122 /********************************************************************/
123 static void mpc5xxx_fec_rbd_clean(mpc5xxx_fec_priv *fec, volatile FEC_RBD * pRbd)
126 * Reset buffer descriptor as empty
128 if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
129 pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
131 pRbd->status = FEC_RBD_EMPTY;
133 pRbd->dataLength = 0;
136 * Now, we have an empty RxBD, restart the SmartDMA receive task
138 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
143 fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
146 /********************************************************************/
147 static void mpc5xxx_fec_tbd_scrub(mpc5xxx_fec_priv *fec)
149 volatile FEC_TBD *pUsedTbd;
152 printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
153 fec->cleanTbdNum, fec->usedTbdIndex);
157 * process all the consumed TBDs
159 while (fec->cleanTbdNum < FEC_TBD_NUM) {
160 pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
161 if (pUsedTbd->status & FEC_TBD_READY) {
163 printf("Cannot clean TBD %d, in use\n", fec->cleanTbdNum);
169 * clean this buffer descriptor
171 if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
172 pUsedTbd->status = FEC_TBD_WRAP;
174 pUsedTbd->status = 0;
177 * update some indeces for a correct handling of the TBD ring
180 fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
184 /********************************************************************/
185 static void mpc5xxx_fec_set_hwaddr(mpc5xxx_fec_priv *fec, char *mac)
187 uint8 currByte; /* byte for which to compute the CRC */
188 int byte; /* loop - counter */
189 int bit; /* loop - counter */
190 uint32 crc = 0xffffffff; /* initial value */
193 * The algorithm used is the following:
194 * we loop on each of the six bytes of the provided address,
195 * and we compute the CRC by left-shifting the previous
196 * value by one position, so that each bit in the current
197 * byte of the address may contribute the calculation. If
198 * the latter and the MSB in the CRC are different, then
199 * the CRC value so computed is also ex-ored with the
200 * "polynomium generator". The current byte of the address
201 * is also shifted right by one bit at each iteration.
202 * This is because the CRC generatore in hardware is implemented
203 * as a shift-register with as many ex-ores as the radixes
204 * in the polynomium. This suggests that we represent the
205 * polynomiumm itself as a 32-bit constant.
207 for (byte = 0; byte < 6; byte++) {
208 currByte = mac[byte];
209 for (bit = 0; bit < 8; bit++) {
210 if ((currByte & 0x01) ^ (crc & 0x01)) {
212 crc = crc ^ 0xedb88320;
223 * Set individual hash table register
226 fec->eth->iaddr1 = (1 << (crc - 32));
227 fec->eth->iaddr2 = 0;
229 fec->eth->iaddr1 = 0;
230 fec->eth->iaddr2 = (1 << crc);
234 * Set physical address
236 fec->eth->paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
237 fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
240 /********************************************************************/
241 static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
243 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
244 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
247 printf ("mpc5xxx_fec_init... Begin\n");
250 mpc5xxx_fec_init_phy(dev, bis);
253 * Call board-specific PHY fixups (if any)
255 #ifdef CONFIG_RESET_PHY_R
260 * Initialize RxBD/TxBD rings
262 mpc5xxx_fec_rbd_init(fec);
263 mpc5xxx_fec_tbd_init(fec);
266 * Clear FEC-Lite interrupt event register(IEVENT)
268 fec->eth->ievent = 0xffffffff;
271 * Set interrupt mask register
273 fec->eth->imask = 0x00000000;
276 * Set FEC-Lite receive control register(R_CNTRL):
278 if (fec->xcv_type == SEVENWIRE) {
280 * Frame length=1518; 7-wire mode
282 fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
285 * Frame length=1518; MII mode;
287 fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
290 fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
293 * Set Opcode/Pause Duration Register
295 fec->eth->op_pause = 0x00010020; /*FIXME 0xffff0020; */
298 * Set Rx FIFO alarm and granularity value
300 fec->eth->rfifo_cntrl = 0x0c000000
301 | (fec->eth->rfifo_cntrl & ~0x0f000000);
302 fec->eth->rfifo_alarm = 0x0000030c;
304 if (fec->eth->rfifo_status & 0x00700000 ) {
305 printf("mpc5xxx_fec_init() RFIFO error\n");
310 * Set Tx FIFO granularity value
312 fec->eth->tfifo_cntrl = 0x0c000000
313 | (fec->eth->tfifo_cntrl & ~0x0f000000);
315 printf("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
316 printf("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
320 * Set transmit fifo watermark register(X_WMRK), default = 64
322 fec->eth->tfifo_alarm = 0x00000080;
323 fec->eth->x_wmrk = 0x2;
326 * Set individual address filter for unicast address
327 * and set physical address registers.
329 mpc5xxx_fec_set_hwaddr(fec, (char *)dev->enetaddr);
332 * Set multicast address filter
334 fec->eth->gaddr1 = 0x00000000;
335 fec->eth->gaddr2 = 0x00000000;
338 * Turn ON cheater FSM: ????
340 fec->eth->xmit_fsm = 0x03000000;
343 * Turn off COMM bus prefetch in the MPC5200 BestComm. It doesn't
344 * work w/ the current receive task.
346 sdma->PtdCntrl |= 0x00000001;
349 * Set priority of different initiators
351 sdma->IPR0 = 7; /* always */
352 sdma->IPR3 = 6; /* Eth RX */
353 sdma->IPR4 = 5; /* Eth Tx */
356 * Clear SmartDMA task interrupt pending bits
358 SDMA_CLEAR_IEVENT(FEC_RECV_TASK_NO);
361 * Initialize SmartDMA parameters stored in SRAM
363 *(volatile int *)FEC_TBD_BASE = (int)fec->tbdBase;
364 *(volatile int *)FEC_RBD_BASE = (int)fec->rbdBase;
365 *(volatile int *)FEC_TBD_NEXT = (int)fec->tbdBase;
366 *(volatile int *)FEC_RBD_NEXT = (int)fec->rbdBase;
369 * Enable FEC-Lite controller
371 fec->eth->ecntrl |= 0x00000006;
374 if (fec->xcv_type != SEVENWIRE)
375 mpc5xxx_fec_phydump (dev->name);
379 * Enable SmartDMA receive task
381 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
384 printf("mpc5xxx_fec_init... Done \n");
390 /********************************************************************/
391 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
393 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
394 const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
395 static int initialized = 0;
402 printf ("mpc5xxx_fec_init_phy... Begin\n");
406 * Initialize GPIO pins
408 if (fec->xcv_type == SEVENWIRE) {
409 /* 10MBit with 7-wire operation */
410 #if defined(CONFIG_TOTAL5200)
411 /* 7-wire and USB2 on Ethernet */
412 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00030000;
413 #else /* !CONFIG_TOTAL5200 */
415 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00020000;
416 #endif /* CONFIG_TOTAL5200 */
418 /* 100MBit with MD operation */
419 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00050000;
423 * Clear FEC-Lite interrupt event register(IEVENT)
425 fec->eth->ievent = 0xffffffff;
428 * Set interrupt mask register
430 fec->eth->imask = 0x00000000;
433 * In original Promess-provided code PHY initialization is disabled with the
434 * following comment: "Phy initialization is DISABLED for now. There was a
435 * problem with running 100 Mbps on PRO board". Thus we temporarily disable
436 * PHY initialization for the Motion-PRO board, until a proper fix is found.
439 if (fec->xcv_type != SEVENWIRE) {
441 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
442 * and do not drop the Preamble.
444 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
447 if (fec->xcv_type != SEVENWIRE) {
449 * Initialize PHY(LXT971A):
451 * Generally, on power up, the LXT971A reads its configuration
452 * pins to check for forced operation, If not cofigured for
453 * forced operation, it uses auto-negotiation/parallel detection
454 * to automatically determine line operating conditions.
455 * If the PHY device on the other side of the link supports
456 * auto-negotiation, the LXT971A auto-negotiates with it
457 * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
458 * support auto-negotiation, the LXT971A automatically detects
459 * the presence of either link pulses(10Mbps PHY) or Idle
460 * symbols(100Mbps) and sets its operating conditions accordingly.
462 * When auto-negotiation is controlled by software, the following
463 * steps are recommended.
466 * The physical address is dependent on hardware configuration.
473 * Reset PHY, then delay 300ns
475 miiphy_write(dev->name, phyAddr, 0x0, 0x8000);
478 #if defined(CONFIG_UC101) || defined(CONFIG_MUCMC52)
479 /* Set the LED configuration Register for the UC101
481 miiphy_write(dev->name, phyAddr, 0x14, 0x4122);
483 if (fec->xcv_type == MII10) {
485 * Force 10Base-T, FDX operation
488 printf("Forcing 10 Mbps ethernet link... ");
490 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
492 miiphy_write(dev->name, fec, phyAddr, 0x0, 0x0100);
494 miiphy_write(dev->name, phyAddr, 0x0, 0x0180);
497 do { /* wait for link status to go down */
499 if ((timeout--) == 0) {
501 printf("hmmm, should not have waited...");
505 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
509 } while ((phyStatus & 0x0004)); /* !link up */
512 do { /* wait for link status to come back up */
514 if ((timeout--) == 0) {
515 printf("failed. Link is down.\n");
518 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
522 } while (!(phyStatus & 0x0004)); /* !link up */
527 } else { /* MII100 */
529 * Set the auto-negotiation advertisement register bits
531 miiphy_write(dev->name, phyAddr, 0x4, 0x01e1);
534 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
536 miiphy_write(dev->name, phyAddr, 0x0, 0x1200);
539 * Wait for AN completion
545 if ((timeout--) == 0) {
547 printf("PHY auto neg 0 failed...\n");
552 if (miiphy_read(dev->name, phyAddr, 0x1, &phyStatus) != 0) {
554 printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
558 } while (!(phyStatus & 0x0004));
561 printf("PHY auto neg complete! \n");
568 if (fec->xcv_type != SEVENWIRE)
569 mpc5xxx_fec_phydump (dev->name);
574 printf("mpc5xxx_fec_init_phy... Done \n");
580 /********************************************************************/
581 static void mpc5xxx_fec_halt(struct eth_device *dev)
583 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
584 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
585 int counter = 0xffff;
588 if (fec->xcv_type != SEVENWIRE)
589 mpc5xxx_fec_phydump (dev->name);
593 * mask FEC chip interrupts
598 * issue graceful stop command to the FEC transmitter if necessary
600 fec->eth->x_cntrl |= 0x00000001;
603 * wait for graceful stop to register
605 while ((counter--) && (!(fec->eth->ievent & 0x10000000))) ;
608 * Disable SmartDMA tasks
610 SDMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
611 SDMA_TASK_DISABLE (FEC_RECV_TASK_NO);
614 * Turn on COMM bus prefetch in the MPC5200 BestComm after we're
615 * done. It doesn't work w/ the current receive task.
617 sdma->PtdCntrl &= ~0x00000001;
620 * Disable the Ethernet Controller
622 fec->eth->ecntrl &= 0xfffffffd;
625 * Clear FIFO status registers
627 fec->eth->rfifo_status &= 0x00700000;
628 fec->eth->tfifo_status &= 0x00700000;
630 fec->eth->reset_cntrl = 0x01000000;
633 * Issue a reset command to the FEC chip
635 fec->eth->ecntrl |= 0x1;
638 * wait at least 16 clock cycles
642 /* don't leave the MII speed set to zero */
643 if (fec->xcv_type != SEVENWIRE) {
645 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
646 * and do not drop the Preamble.
648 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
652 printf("Ethernet task stopped\n");
657 /********************************************************************/
659 static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec)
661 uint16 phyAddr = CONFIG_PHY_ADDR;
664 if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
665 || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
667 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
668 printf("\nphyStatus: 0x%04x\n", phyStatus);
669 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
670 printf("ievent: 0x%08x\n", fec->eth->ievent);
671 printf("x_status: 0x%08x\n", fec->eth->x_status);
672 printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
674 printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
675 printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
676 printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
677 printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
678 printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
679 printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
683 static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec)
685 uint16 phyAddr = CONFIG_PHY_ADDR;
688 if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
689 || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
691 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
692 printf("\nphyStatus: 0x%04x\n", phyStatus);
693 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
694 printf("ievent: 0x%08x\n", fec->eth->ievent);
695 printf("x_status: 0x%08x\n", fec->eth->x_status);
696 printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
698 printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
699 printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
700 printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
701 printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
702 printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
703 printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
708 /********************************************************************/
710 static int mpc5xxx_fec_send(struct eth_device *dev, volatile void *eth_data,
714 * This routine transmits one frame. This routine only accepts
715 * 6-byte Ethernet addresses.
717 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
718 volatile FEC_TBD *pTbd;
721 printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
722 tfifo_print(dev->name, fec);
726 * Clear Tx BD ring at first
728 mpc5xxx_fec_tbd_scrub(fec);
731 * Check for valid length of data.
733 if ((data_length > 1500) || (data_length <= 0)) {
738 * Check the number of vacant TxBDs.
740 if (fec->cleanTbdNum < 1) {
742 printf("No available TxBDs ...\n");
748 * Get the first TxBD to send the mac header
750 pTbd = &fec->tbdBase[fec->tbdIndex];
751 pTbd->dataLength = data_length;
752 pTbd->dataPointer = (uint32)eth_data;
753 pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
754 fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
757 printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
763 if (fec->xcv_type != SEVENWIRE) {
765 miiphy_read(dev->name, 0, 0x1, &phyStatus);
769 * Enable SmartDMA transmit task
773 tfifo_print(dev->name, fec);
775 SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
777 tfifo_print(dev->name, fec);
783 fec->cleanTbdNum -= 1;
785 #if (DEBUG & 0x129) && (DEBUG & 0x80000000)
786 printf ("smartDMA ethernet Tx task enabled\n");
789 * wait until frame is sent .
791 while (pTbd->status & FEC_TBD_READY) {
794 printf ("TDB status = %04x\n", pTbd->status);
802 /********************************************************************/
803 static int mpc5xxx_fec_recv(struct eth_device *dev)
806 * This command pulls one frame from the card
808 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
809 volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
810 unsigned long ievent;
811 int frame_length, len = 0;
813 uchar buff[FEC_MAX_PKT_SIZE];
816 printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
823 * Check if any critical events have happened
825 ievent = fec->eth->ievent;
826 fec->eth->ievent = ievent;
827 if (ievent & 0x20060000) {
828 /* BABT, Rx/Tx FIFO errors */
829 mpc5xxx_fec_halt(dev);
830 mpc5xxx_fec_init(dev, NULL);
833 if (ievent & 0x80000000) {
834 /* Heartbeat error */
835 fec->eth->x_cntrl |= 0x00000001;
837 if (ievent & 0x10000000) {
838 /* Graceful stop complete */
839 if (fec->eth->x_cntrl & 0x00000001) {
840 mpc5xxx_fec_halt(dev);
841 fec->eth->x_cntrl &= ~0x00000001;
842 mpc5xxx_fec_init(dev, NULL);
846 if (!(pRbd->status & FEC_RBD_EMPTY)) {
847 if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
848 ((pRbd->dataLength - 4) > 14)) {
851 * Get buffer address and size
853 frame = (NBUF *)pRbd->dataPointer;
854 frame_length = pRbd->dataLength - 4;
859 printf("recv data hdr:");
860 for (i = 0; i < 14; i++)
861 printf("%x ", *(frame->head + i));
866 * Fill the buffer and pass it to upper layers
868 memcpy(buff, frame->head, 14);
869 memcpy(buff + 14, frame->data, frame_length);
870 NetReceive(buff, frame_length);
874 * Reset buffer descriptor as empty
876 mpc5xxx_fec_rbd_clean(fec, pRbd);
878 SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
883 /********************************************************************/
884 int mpc5xxx_fec_initialize(bd_t * bis)
886 mpc5xxx_fec_priv *fec;
887 struct eth_device *dev;
889 char env_enetaddr[6];
892 fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
893 dev = (struct eth_device *)malloc(sizeof(*dev));
894 memset(dev, 0, sizeof *dev);
896 fec->eth = (ethernet_regs *)MPC5XXX_FEC;
897 fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
898 fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
899 #if defined(CONFIG_MPC5xxx_FEC_MII100)
900 fec->xcv_type = MII100;
901 #elif defined(CONFIG_MPC5xxx_FEC_MII10)
902 fec->xcv_type = MII10;
903 #elif defined(CONFIG_MPC5xxx_FEC_SEVENWIRE)
904 fec->xcv_type = SEVENWIRE;
906 #error fec->xcv_type not initialized.
908 if (fec->xcv_type != SEVENWIRE) {
910 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
911 * and do not drop the Preamble.
913 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
916 dev->priv = (void *)fec;
917 dev->iobase = MPC5XXX_FEC;
918 dev->init = mpc5xxx_fec_init;
919 dev->halt = mpc5xxx_fec_halt;
920 dev->send = mpc5xxx_fec_send;
921 dev->recv = mpc5xxx_fec_recv;
923 sprintf(dev->name, "FEC");
926 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
927 miiphy_register (dev->name,
928 fec5xxx_miiphy_read, fec5xxx_miiphy_write);
932 * Try to set the mac address now. The fec mac address is
933 * a garbage after reset. When not using fec for booting
934 * the Linux fec driver will try to work with this garbage.
936 tmp = getenv("ethaddr");
938 for (i=0; i<6; i++) {
939 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
941 tmp = (*end) ? end+1 : end;
943 mpc5xxx_fec_set_hwaddr(fec, env_enetaddr);
949 /* MII-interface related functions */
950 /********************************************************************/
951 int fec5xxx_miiphy_read(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 * retVal)
953 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
954 uint32 reg; /* convenient holder for the PHY register */
955 uint32 phy; /* convenient holder for the PHY */
956 int timeout = 0xffff;
959 * reading from any PHY's register is done by properly
960 * programming the FEC's MII data register.
962 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
963 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
965 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg);
968 * wait for the related interrupt
970 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
974 printf ("Read MDIO failed...\n");
980 * clear mii interrupt bit
982 eth->ievent = 0x00800000;
985 * it's now safe to read the PHY's register
987 *retVal = (uint16) eth->mii_data;
992 /********************************************************************/
993 int fec5xxx_miiphy_write(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 data)
995 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
996 uint32 reg; /* convenient holder for the PHY register */
997 uint32 phy; /* convenient holder for the PHY */
998 int timeout = 0xffff;
1000 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
1001 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
1003 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
1004 FEC_MII_DATA_TA | phy | reg | data);
1007 * wait for the MII interrupt
1009 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
1013 printf ("Write MDIO failed...\n");
1019 * clear MII interrupt bit
1021 eth->ievent = 0x00800000;