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.
443 * No MII for 7-wire mode
445 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
448 if (fec->xcv_type != SEVENWIRE) {
450 * Initialize PHY(LXT971A):
452 * Generally, on power up, the LXT971A reads its configuration
453 * pins to check for forced operation, If not cofigured for
454 * forced operation, it uses auto-negotiation/parallel detection
455 * to automatically determine line operating conditions.
456 * If the PHY device on the other side of the link supports
457 * auto-negotiation, the LXT971A auto-negotiates with it
458 * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
459 * support auto-negotiation, the LXT971A automatically detects
460 * the presence of either link pulses(10Mbps PHY) or Idle
461 * symbols(100Mbps) and sets its operating conditions accordingly.
463 * When auto-negotiation is controlled by software, the following
464 * steps are recommended.
467 * The physical address is dependent on hardware configuration.
474 * Reset PHY, then delay 300ns
476 miiphy_write(dev->name, phyAddr, 0x0, 0x8000);
479 #if defined(CONFIG_UC101) || defined(CONFIG_MUCMC52)
480 /* Set the LED configuration Register for the UC101
482 miiphy_write(dev->name, phyAddr, 0x14, 0x4122);
484 if (fec->xcv_type == MII10) {
486 * Force 10Base-T, FDX operation
489 printf("Forcing 10 Mbps ethernet link... ");
491 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
493 miiphy_write(dev->name, fec, phyAddr, 0x0, 0x0100);
495 miiphy_write(dev->name, phyAddr, 0x0, 0x0180);
498 do { /* wait for link status to go down */
500 if ((timeout--) == 0) {
502 printf("hmmm, should not have waited...");
506 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
510 } while ((phyStatus & 0x0004)); /* !link up */
513 do { /* wait for link status to come back up */
515 if ((timeout--) == 0) {
516 printf("failed. Link is down.\n");
519 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
523 } while (!(phyStatus & 0x0004)); /* !link up */
528 } else { /* MII100 */
530 * Set the auto-negotiation advertisement register bits
532 miiphy_write(dev->name, phyAddr, 0x4, 0x01e1);
535 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
537 miiphy_write(dev->name, phyAddr, 0x0, 0x1200);
540 * Wait for AN completion
546 if ((timeout--) == 0) {
548 printf("PHY auto neg 0 failed...\n");
553 if (miiphy_read(dev->name, phyAddr, 0x1, &phyStatus) != 0) {
555 printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
559 } while (!(phyStatus & 0x0004));
562 printf("PHY auto neg complete! \n");
569 if (fec->xcv_type != SEVENWIRE)
570 mpc5xxx_fec_phydump (dev->name);
575 printf("mpc5xxx_fec_init_phy... Done \n");
581 /********************************************************************/
582 static void mpc5xxx_fec_halt(struct eth_device *dev)
584 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
585 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
586 int counter = 0xffff;
589 if (fec->xcv_type != SEVENWIRE)
590 mpc5xxx_fec_phydump (dev->name);
594 * mask FEC chip interrupts
599 * issue graceful stop command to the FEC transmitter if necessary
601 fec->eth->x_cntrl |= 0x00000001;
604 * wait for graceful stop to register
606 while ((counter--) && (!(fec->eth->ievent & 0x10000000))) ;
609 * Disable SmartDMA tasks
611 SDMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
612 SDMA_TASK_DISABLE (FEC_RECV_TASK_NO);
615 * Turn on COMM bus prefetch in the MPC5200 BestComm after we're
616 * done. It doesn't work w/ the current receive task.
618 sdma->PtdCntrl &= ~0x00000001;
621 * Disable the Ethernet Controller
623 fec->eth->ecntrl &= 0xfffffffd;
626 * Clear FIFO status registers
628 fec->eth->rfifo_status &= 0x00700000;
629 fec->eth->tfifo_status &= 0x00700000;
631 fec->eth->reset_cntrl = 0x01000000;
634 * Issue a reset command to the FEC chip
636 fec->eth->ecntrl |= 0x1;
639 * wait at least 16 clock cycles
643 /* don't leave the MII speed set to zero */
644 if (fec->xcv_type != SEVENWIRE) {
646 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
647 * and do not drop the Preamble.
648 * No MII for 7-wire mode
650 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
654 printf("Ethernet task stopped\n");
659 /********************************************************************/
661 static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec)
663 uint16 phyAddr = CONFIG_PHY_ADDR;
666 if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
667 || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
669 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
670 printf("\nphyStatus: 0x%04x\n", phyStatus);
671 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
672 printf("ievent: 0x%08x\n", fec->eth->ievent);
673 printf("x_status: 0x%08x\n", fec->eth->x_status);
674 printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
676 printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
677 printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
678 printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
679 printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
680 printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
681 printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
685 static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec)
687 uint16 phyAddr = CONFIG_PHY_ADDR;
690 if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
691 || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
693 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
694 printf("\nphyStatus: 0x%04x\n", phyStatus);
695 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
696 printf("ievent: 0x%08x\n", fec->eth->ievent);
697 printf("x_status: 0x%08x\n", fec->eth->x_status);
698 printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
700 printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
701 printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
702 printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
703 printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
704 printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
705 printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
710 /********************************************************************/
712 static int mpc5xxx_fec_send(struct eth_device *dev, void *eth_data,
716 * This routine transmits one frame. This routine only accepts
717 * 6-byte Ethernet addresses.
719 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
720 volatile FEC_TBD *pTbd;
723 printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
724 tfifo_print(dev->name, fec);
728 * Clear Tx BD ring at first
730 mpc5xxx_fec_tbd_scrub(fec);
733 * Check for valid length of data.
735 if ((data_length > 1500) || (data_length <= 0)) {
740 * Check the number of vacant TxBDs.
742 if (fec->cleanTbdNum < 1) {
744 printf("No available TxBDs ...\n");
750 * Get the first TxBD to send the mac header
752 pTbd = &fec->tbdBase[fec->tbdIndex];
753 pTbd->dataLength = data_length;
754 pTbd->dataPointer = (uint32)eth_data;
755 pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
756 fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
759 printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
765 if (fec->xcv_type != SEVENWIRE) {
767 miiphy_read(dev->name, 0, 0x1, &phyStatus);
771 * Enable SmartDMA transmit task
775 tfifo_print(dev->name, fec);
777 SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
779 tfifo_print(dev->name, fec);
785 fec->cleanTbdNum -= 1;
787 #if (DEBUG & 0x129) && (DEBUG & 0x80000000)
788 printf ("smartDMA ethernet Tx task enabled\n");
791 * wait until frame is sent .
793 while (pTbd->status & FEC_TBD_READY) {
796 printf ("TDB status = %04x\n", pTbd->status);
804 /********************************************************************/
805 static int mpc5xxx_fec_recv(struct eth_device *dev)
808 * This command pulls one frame from the card
810 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
811 volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
812 unsigned long ievent;
813 int frame_length, len = 0;
815 uchar buff[FEC_MAX_PKT_SIZE];
818 printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
825 * Check if any critical events have happened
827 ievent = fec->eth->ievent;
828 fec->eth->ievent = ievent;
829 if (ievent & 0x20060000) {
830 /* BABT, Rx/Tx FIFO errors */
831 mpc5xxx_fec_halt(dev);
832 mpc5xxx_fec_init(dev, NULL);
835 if (ievent & 0x80000000) {
836 /* Heartbeat error */
837 fec->eth->x_cntrl |= 0x00000001;
839 if (ievent & 0x10000000) {
840 /* Graceful stop complete */
841 if (fec->eth->x_cntrl & 0x00000001) {
842 mpc5xxx_fec_halt(dev);
843 fec->eth->x_cntrl &= ~0x00000001;
844 mpc5xxx_fec_init(dev, NULL);
848 if (!(pRbd->status & FEC_RBD_EMPTY)) {
849 if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
850 ((pRbd->dataLength - 4) > 14)) {
853 * Get buffer address and size
855 frame = (NBUF *)pRbd->dataPointer;
856 frame_length = pRbd->dataLength - 4;
861 printf("recv data hdr:");
862 for (i = 0; i < 14; i++)
863 printf("%x ", *(frame->head + i));
868 * Fill the buffer and pass it to upper layers
870 memcpy(buff, frame->head, 14);
871 memcpy(buff + 14, frame->data, frame_length);
872 NetReceive(buff, frame_length);
876 * Reset buffer descriptor as empty
878 mpc5xxx_fec_rbd_clean(fec, pRbd);
880 SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
885 /********************************************************************/
886 int mpc5xxx_fec_initialize(bd_t * bis)
888 mpc5xxx_fec_priv *fec;
889 struct eth_device *dev;
891 char env_enetaddr[6];
894 fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
895 dev = (struct eth_device *)malloc(sizeof(*dev));
896 memset(dev, 0, sizeof *dev);
898 fec->eth = (ethernet_regs *)MPC5XXX_FEC;
899 fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
900 fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
901 #if defined(CONFIG_MPC5xxx_FEC_MII100)
902 fec->xcv_type = MII100;
903 #elif defined(CONFIG_MPC5xxx_FEC_MII10)
904 fec->xcv_type = MII10;
905 #elif defined(CONFIG_MPC5xxx_FEC_SEVENWIRE)
906 fec->xcv_type = SEVENWIRE;
908 #error fec->xcv_type not initialized.
910 if (fec->xcv_type != SEVENWIRE) {
912 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
913 * and do not drop the Preamble.
914 * No MII for 7-wire mode
916 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
919 dev->priv = (void *)fec;
920 dev->iobase = MPC5XXX_FEC;
921 dev->init = mpc5xxx_fec_init;
922 dev->halt = mpc5xxx_fec_halt;
923 dev->send = mpc5xxx_fec_send;
924 dev->recv = mpc5xxx_fec_recv;
926 sprintf(dev->name, "FEC");
929 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
930 miiphy_register (dev->name,
931 fec5xxx_miiphy_read, fec5xxx_miiphy_write);
935 * Try to set the mac address now. The fec mac address is
936 * a garbage after reset. When not using fec for booting
937 * the Linux fec driver will try to work with this garbage.
939 tmp = getenv("ethaddr");
941 for (i=0; i<6; i++) {
942 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
944 tmp = (*end) ? end+1 : end;
946 mpc5xxx_fec_set_hwaddr(fec, env_enetaddr);
952 /* MII-interface related functions */
953 /********************************************************************/
954 int fec5xxx_miiphy_read(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 * retVal)
956 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
957 uint32 reg; /* convenient holder for the PHY register */
958 uint32 phy; /* convenient holder for the PHY */
959 int timeout = 0xffff;
962 * reading from any PHY's register is done by properly
963 * programming the FEC's MII data register.
965 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
966 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
968 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg);
971 * wait for the related interrupt
973 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
977 printf ("Read MDIO failed...\n");
983 * clear mii interrupt bit
985 eth->ievent = 0x00800000;
988 * it's now safe to read the PHY's register
990 *retVal = (uint16) eth->mii_data;
995 /********************************************************************/
996 int fec5xxx_miiphy_write(const char *devname, uint8 phyAddr, uint8 regAddr, uint16 data)
998 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
999 uint32 reg; /* convenient holder for the PHY register */
1000 uint32 phy; /* convenient holder for the PHY */
1001 int timeout = 0xffff;
1003 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
1004 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
1006 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
1007 FEC_MII_DATA_TA | phy | reg | data);
1010 * wait for the MII interrupt
1012 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
1016 printf ("Write MDIO failed...\n");
1022 * clear MII interrupt bit
1024 eth->ievent = 0x00800000;