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(struct mii_dev *bus, int phyAddr, int devad,
40 int fec5xxx_miiphy_write(struct mii_dev *bus, int phyAddr, int devad,
41 int regAddr, u16 data);
43 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis);
45 /********************************************************************/
47 static void mpc5xxx_fec_phydump (char *devname)
50 uint8 phyAddr = CONFIG_PHY_ADDR;
52 #if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
53 /* regs to print: 0...7, 16...19, 21, 23, 24 */
54 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
55 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
57 /* regs to print: 0...8, 16...20 */
58 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
59 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
63 for (i = 0; i < 32; i++) {
65 miiphy_read(devname, phyAddr, i, &phyStatus);
66 printf("Mii reg %d: 0x%04x\n", i, phyStatus);
72 /********************************************************************/
73 static int mpc5xxx_fec_rbd_init(mpc5xxx_fec_priv *fec)
79 for (ix = 0; ix < FEC_RBD_NUM; ix++) {
81 data = (char *)malloc(FEC_MAX_PKT_SIZE);
83 printf ("RBD INIT FAILED\n");
86 fec->rbdBase[ix].dataPointer = (uint32)data;
88 fec->rbdBase[ix].status = FEC_RBD_EMPTY;
89 fec->rbdBase[ix].dataLength = 0;
94 * have the last RBD to close the ring
96 fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
102 /********************************************************************/
103 static void mpc5xxx_fec_tbd_init(mpc5xxx_fec_priv *fec)
107 for (ix = 0; ix < FEC_TBD_NUM; ix++) {
108 fec->tbdBase[ix].status = 0;
112 * Have the last TBD to close the ring
114 fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
117 * Initialize some indices
120 fec->usedTbdIndex = 0;
121 fec->cleanTbdNum = FEC_TBD_NUM;
124 /********************************************************************/
125 static void mpc5xxx_fec_rbd_clean(mpc5xxx_fec_priv *fec, volatile FEC_RBD * pRbd)
128 * Reset buffer descriptor as empty
130 if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
131 pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
133 pRbd->status = FEC_RBD_EMPTY;
135 pRbd->dataLength = 0;
138 * Now, we have an empty RxBD, restart the SmartDMA receive task
140 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
145 fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
148 /********************************************************************/
149 static void mpc5xxx_fec_tbd_scrub(mpc5xxx_fec_priv *fec)
151 volatile FEC_TBD *pUsedTbd;
154 printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
155 fec->cleanTbdNum, fec->usedTbdIndex);
159 * process all the consumed TBDs
161 while (fec->cleanTbdNum < FEC_TBD_NUM) {
162 pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
163 if (pUsedTbd->status & FEC_TBD_READY) {
165 printf("Cannot clean TBD %d, in use\n", fec->cleanTbdNum);
171 * clean this buffer descriptor
173 if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
174 pUsedTbd->status = FEC_TBD_WRAP;
176 pUsedTbd->status = 0;
179 * update some indeces for a correct handling of the TBD ring
182 fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
186 /********************************************************************/
187 static void mpc5xxx_fec_set_hwaddr(mpc5xxx_fec_priv *fec, char *mac)
189 uint8 currByte; /* byte for which to compute the CRC */
190 int byte; /* loop - counter */
191 int bit; /* loop - counter */
192 uint32 crc = 0xffffffff; /* initial value */
195 * The algorithm used is the following:
196 * we loop on each of the six bytes of the provided address,
197 * and we compute the CRC by left-shifting the previous
198 * value by one position, so that each bit in the current
199 * byte of the address may contribute the calculation. If
200 * the latter and the MSB in the CRC are different, then
201 * the CRC value so computed is also ex-ored with the
202 * "polynomium generator". The current byte of the address
203 * is also shifted right by one bit at each iteration.
204 * This is because the CRC generatore in hardware is implemented
205 * as a shift-register with as many ex-ores as the radixes
206 * in the polynomium. This suggests that we represent the
207 * polynomiumm itself as a 32-bit constant.
209 for (byte = 0; byte < 6; byte++) {
210 currByte = mac[byte];
211 for (bit = 0; bit < 8; bit++) {
212 if ((currByte & 0x01) ^ (crc & 0x01)) {
214 crc = crc ^ 0xedb88320;
225 * Set individual hash table register
228 fec->eth->iaddr1 = (1 << (crc - 32));
229 fec->eth->iaddr2 = 0;
231 fec->eth->iaddr1 = 0;
232 fec->eth->iaddr2 = (1 << crc);
236 * Set physical address
238 fec->eth->paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
239 fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
242 /********************************************************************/
243 static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
245 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
246 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
249 printf ("mpc5xxx_fec_init... Begin\n");
252 mpc5xxx_fec_init_phy(dev, bis);
255 * Call board-specific PHY fixups (if any)
257 #ifdef CONFIG_RESET_PHY_R
262 * Initialize RxBD/TxBD rings
264 mpc5xxx_fec_rbd_init(fec);
265 mpc5xxx_fec_tbd_init(fec);
268 * Clear FEC-Lite interrupt event register(IEVENT)
270 fec->eth->ievent = 0xffffffff;
273 * Set interrupt mask register
275 fec->eth->imask = 0x00000000;
278 * Set FEC-Lite receive control register(R_CNTRL):
280 if (fec->xcv_type == SEVENWIRE) {
282 * Frame length=1518; 7-wire mode
284 fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
287 * Frame length=1518; MII mode;
289 fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
292 fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
295 * Set Opcode/Pause Duration Register
297 fec->eth->op_pause = 0x00010020; /*FIXME 0xffff0020; */
300 * Set Rx FIFO alarm and granularity value
302 fec->eth->rfifo_cntrl = 0x0c000000
303 | (fec->eth->rfifo_cntrl & ~0x0f000000);
304 fec->eth->rfifo_alarm = 0x0000030c;
306 if (fec->eth->rfifo_status & 0x00700000 ) {
307 printf("mpc5xxx_fec_init() RFIFO error\n");
312 * Set Tx FIFO granularity value
314 fec->eth->tfifo_cntrl = 0x0c000000
315 | (fec->eth->tfifo_cntrl & ~0x0f000000);
317 printf("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
318 printf("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
322 * Set transmit fifo watermark register(X_WMRK), default = 64
324 fec->eth->tfifo_alarm = 0x00000080;
325 fec->eth->x_wmrk = 0x2;
328 * Set individual address filter for unicast address
329 * and set physical address registers.
331 mpc5xxx_fec_set_hwaddr(fec, (char *)dev->enetaddr);
334 * Set multicast address filter
336 fec->eth->gaddr1 = 0x00000000;
337 fec->eth->gaddr2 = 0x00000000;
340 * Turn ON cheater FSM: ????
342 fec->eth->xmit_fsm = 0x03000000;
345 * Turn off COMM bus prefetch in the MPC5200 BestComm. It doesn't
346 * work w/ the current receive task.
348 sdma->PtdCntrl |= 0x00000001;
351 * Set priority of different initiators
353 sdma->IPR0 = 7; /* always */
354 sdma->IPR3 = 6; /* Eth RX */
355 sdma->IPR4 = 5; /* Eth Tx */
358 * Clear SmartDMA task interrupt pending bits
360 SDMA_CLEAR_IEVENT(FEC_RECV_TASK_NO);
363 * Initialize SmartDMA parameters stored in SRAM
365 *(volatile int *)FEC_TBD_BASE = (int)fec->tbdBase;
366 *(volatile int *)FEC_RBD_BASE = (int)fec->rbdBase;
367 *(volatile int *)FEC_TBD_NEXT = (int)fec->tbdBase;
368 *(volatile int *)FEC_RBD_NEXT = (int)fec->rbdBase;
371 * Enable FEC-Lite controller
373 fec->eth->ecntrl |= 0x00000006;
376 if (fec->xcv_type != SEVENWIRE)
377 mpc5xxx_fec_phydump (dev->name);
381 * Enable SmartDMA receive task
383 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
386 printf("mpc5xxx_fec_init... Done \n");
392 /********************************************************************/
393 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
395 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
396 const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
397 static int initialized = 0;
404 printf ("mpc5xxx_fec_init_phy... Begin\n");
408 * Initialize GPIO pins
410 if (fec->xcv_type == SEVENWIRE) {
411 /* 10MBit with 7-wire operation */
413 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00020000;
415 /* 100MBit with MD operation */
416 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00050000;
420 * Clear FEC-Lite interrupt event register(IEVENT)
422 fec->eth->ievent = 0xffffffff;
425 * Set interrupt mask register
427 fec->eth->imask = 0x00000000;
430 * In original Promess-provided code PHY initialization is disabled with the
431 * following comment: "Phy initialization is DISABLED for now. There was a
432 * problem with running 100 Mbps on PRO board". Thus we temporarily disable
433 * PHY initialization for the Motion-PRO board, until a proper fix is found.
436 if (fec->xcv_type != SEVENWIRE) {
438 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
439 * and do not drop the Preamble.
440 * No MII for 7-wire mode
442 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
445 if (fec->xcv_type != SEVENWIRE) {
447 * Initialize PHY(LXT971A):
449 * Generally, on power up, the LXT971A reads its configuration
450 * pins to check for forced operation, If not cofigured for
451 * forced operation, it uses auto-negotiation/parallel detection
452 * to automatically determine line operating conditions.
453 * If the PHY device on the other side of the link supports
454 * auto-negotiation, the LXT971A auto-negotiates with it
455 * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
456 * support auto-negotiation, the LXT971A automatically detects
457 * the presence of either link pulses(10Mbps PHY) or Idle
458 * symbols(100Mbps) and sets its operating conditions accordingly.
460 * When auto-negotiation is controlled by software, the following
461 * steps are recommended.
464 * The physical address is dependent on hardware configuration.
471 * Reset PHY, then delay 300ns
473 miiphy_write(dev->name, phyAddr, 0x0, 0x8000);
476 if (fec->xcv_type == MII10) {
478 * Force 10Base-T, FDX operation
481 printf("Forcing 10 Mbps ethernet link... ");
483 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
485 miiphy_write(dev->name, fec, phyAddr, 0x0, 0x0100);
487 miiphy_write(dev->name, phyAddr, 0x0, 0x0180);
490 do { /* wait for link status to go down */
492 if ((timeout--) == 0) {
494 printf("hmmm, should not have waited...");
498 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
502 } while ((phyStatus & 0x0004)); /* !link up */
505 do { /* wait for link status to come back up */
507 if ((timeout--) == 0) {
508 printf("failed. Link is down.\n");
511 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
515 } while (!(phyStatus & 0x0004)); /* !link up */
520 } else { /* MII100 */
522 * Set the auto-negotiation advertisement register bits
524 miiphy_write(dev->name, phyAddr, 0x4, 0x01e1);
527 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
529 miiphy_write(dev->name, phyAddr, 0x0, 0x1200);
532 * Wait for AN completion
538 if ((timeout--) == 0) {
540 printf("PHY auto neg 0 failed...\n");
545 if (miiphy_read(dev->name, phyAddr, 0x1, &phyStatus) != 0) {
547 printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
551 } while (!(phyStatus & 0x0004));
554 printf("PHY auto neg complete! \n");
561 if (fec->xcv_type != SEVENWIRE)
562 mpc5xxx_fec_phydump (dev->name);
567 printf("mpc5xxx_fec_init_phy... Done \n");
573 /********************************************************************/
574 static void mpc5xxx_fec_halt(struct eth_device *dev)
576 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
577 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
578 int counter = 0xffff;
581 if (fec->xcv_type != SEVENWIRE)
582 mpc5xxx_fec_phydump (dev->name);
586 * mask FEC chip interrupts
591 * issue graceful stop command to the FEC transmitter if necessary
593 fec->eth->x_cntrl |= 0x00000001;
596 * wait for graceful stop to register
598 while ((counter--) && (!(fec->eth->ievent & 0x10000000))) ;
601 * Disable SmartDMA tasks
603 SDMA_TASK_DISABLE (FEC_XMIT_TASK_NO);
604 SDMA_TASK_DISABLE (FEC_RECV_TASK_NO);
607 * Turn on COMM bus prefetch in the MPC5200 BestComm after we're
608 * done. It doesn't work w/ the current receive task.
610 sdma->PtdCntrl &= ~0x00000001;
613 * Disable the Ethernet Controller
615 fec->eth->ecntrl &= 0xfffffffd;
618 * Clear FIFO status registers
620 fec->eth->rfifo_status &= 0x00700000;
621 fec->eth->tfifo_status &= 0x00700000;
623 fec->eth->reset_cntrl = 0x01000000;
626 * Issue a reset command to the FEC chip
628 fec->eth->ecntrl |= 0x1;
631 * wait at least 16 clock cycles
635 /* don't leave the MII speed set to zero */
636 if (fec->xcv_type != SEVENWIRE) {
638 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
639 * and do not drop the Preamble.
640 * No MII for 7-wire mode
642 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
646 printf("Ethernet task stopped\n");
651 /********************************************************************/
653 static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec)
655 uint16 phyAddr = CONFIG_PHY_ADDR;
658 if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
659 || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
661 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
662 printf("\nphyStatus: 0x%04x\n", phyStatus);
663 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
664 printf("ievent: 0x%08x\n", fec->eth->ievent);
665 printf("x_status: 0x%08x\n", fec->eth->x_status);
666 printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
668 printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
669 printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
670 printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
671 printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
672 printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
673 printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
677 static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec)
679 uint16 phyAddr = CONFIG_PHY_ADDR;
682 if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
683 || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
685 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
686 printf("\nphyStatus: 0x%04x\n", phyStatus);
687 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
688 printf("ievent: 0x%08x\n", fec->eth->ievent);
689 printf("x_status: 0x%08x\n", fec->eth->x_status);
690 printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
692 printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
693 printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
694 printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
695 printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
696 printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
697 printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
702 /********************************************************************/
704 static int mpc5xxx_fec_send(struct eth_device *dev, void *eth_data,
708 * This routine transmits one frame. This routine only accepts
709 * 6-byte Ethernet addresses.
711 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
712 volatile FEC_TBD *pTbd;
715 printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
716 tfifo_print(dev->name, fec);
720 * Clear Tx BD ring at first
722 mpc5xxx_fec_tbd_scrub(fec);
725 * Check for valid length of data.
727 if ((data_length > 1500) || (data_length <= 0)) {
732 * Check the number of vacant TxBDs.
734 if (fec->cleanTbdNum < 1) {
736 printf("No available TxBDs ...\n");
742 * Get the first TxBD to send the mac header
744 pTbd = &fec->tbdBase[fec->tbdIndex];
745 pTbd->dataLength = data_length;
746 pTbd->dataPointer = (uint32)eth_data;
747 pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
748 fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
751 printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
757 if (fec->xcv_type != SEVENWIRE) {
759 miiphy_read(dev->name, 0, 0x1, &phyStatus);
763 * Enable SmartDMA transmit task
767 tfifo_print(dev->name, fec);
769 SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
771 tfifo_print(dev->name, fec);
777 fec->cleanTbdNum -= 1;
779 #if (DEBUG & 0x129) && (DEBUG & 0x80000000)
780 printf ("smartDMA ethernet Tx task enabled\n");
783 * wait until frame is sent .
785 while (pTbd->status & FEC_TBD_READY) {
788 printf ("TDB status = %04x\n", pTbd->status);
796 /********************************************************************/
797 static int mpc5xxx_fec_recv(struct eth_device *dev)
800 * This command pulls one frame from the card
802 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
803 volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
804 unsigned long ievent;
805 int frame_length, len = 0;
807 uchar buff[FEC_MAX_PKT_SIZE];
810 printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
817 * Check if any critical events have happened
819 ievent = fec->eth->ievent;
820 fec->eth->ievent = ievent;
821 if (ievent & 0x20060000) {
822 /* BABT, Rx/Tx FIFO errors */
823 mpc5xxx_fec_halt(dev);
824 mpc5xxx_fec_init(dev, NULL);
827 if (ievent & 0x80000000) {
828 /* Heartbeat error */
829 fec->eth->x_cntrl |= 0x00000001;
831 if (ievent & 0x10000000) {
832 /* Graceful stop complete */
833 if (fec->eth->x_cntrl & 0x00000001) {
834 mpc5xxx_fec_halt(dev);
835 fec->eth->x_cntrl &= ~0x00000001;
836 mpc5xxx_fec_init(dev, NULL);
840 if (!(pRbd->status & FEC_RBD_EMPTY)) {
841 if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
842 ((pRbd->dataLength - 4) > 14)) {
845 * Get buffer address and size
847 frame = (NBUF *)pRbd->dataPointer;
848 frame_length = pRbd->dataLength - 4;
853 printf("recv data hdr:");
854 for (i = 0; i < 14; i++)
855 printf("%x ", *(frame->head + i));
860 * Fill the buffer and pass it to upper layers
862 memcpy(buff, frame->head, 14);
863 memcpy(buff + 14, frame->data, frame_length);
864 net_process_received_packet(buff, frame_length);
868 * Reset buffer descriptor as empty
870 mpc5xxx_fec_rbd_clean(fec, pRbd);
872 SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
877 /********************************************************************/
878 int mpc5xxx_fec_initialize(bd_t * bis)
880 mpc5xxx_fec_priv *fec;
881 struct eth_device *dev;
883 char env_enetaddr[6];
886 fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
887 dev = (struct eth_device *)malloc(sizeof(*dev));
888 memset(dev, 0, sizeof *dev);
890 fec->eth = (ethernet_regs *)MPC5XXX_FEC;
891 fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
892 fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
893 #if defined(CONFIG_MPC5xxx_FEC_MII100)
894 fec->xcv_type = MII100;
895 #elif defined(CONFIG_MPC5xxx_FEC_MII10)
896 fec->xcv_type = MII10;
897 #elif defined(CONFIG_MPC5xxx_FEC_SEVENWIRE)
898 fec->xcv_type = SEVENWIRE;
900 #error fec->xcv_type not initialized.
902 if (fec->xcv_type != SEVENWIRE) {
904 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
905 * and do not drop the Preamble.
906 * No MII for 7-wire mode
908 fec->eth->mii_speed = (((gd->arch.ipb_clk >> 20) / 5) << 1);
911 dev->priv = (void *)fec;
912 dev->iobase = MPC5XXX_FEC;
913 dev->init = mpc5xxx_fec_init;
914 dev->halt = mpc5xxx_fec_halt;
915 dev->send = mpc5xxx_fec_send;
916 dev->recv = mpc5xxx_fec_recv;
918 strcpy(dev->name, "FEC");
921 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
923 struct mii_dev *mdiodev = mdio_alloc();
926 strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
927 mdiodev->read = fec5xxx_miiphy_read;
928 mdiodev->write = fec5xxx_miiphy_write;
930 retval = mdio_register(mdiodev);
936 * Try to set the mac address now. The fec mac address is
937 * a garbage after reset. When not using fec for booting
938 * the Linux fec driver will try to work with this garbage.
940 tmp = getenv("ethaddr");
942 for (i=0; i<6; i++) {
943 env_enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
945 tmp = (*end) ? end+1 : end;
947 mpc5xxx_fec_set_hwaddr(fec, env_enetaddr);
953 /* MII-interface related functions */
954 /********************************************************************/
955 int fec5xxx_miiphy_read(struct mii_dev *bus, int phyAddr, int devad,
959 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
960 uint32 reg; /* convenient holder for the PHY register */
961 uint32 phy; /* convenient holder for the PHY */
962 int timeout = 0xffff;
965 * reading from any PHY's register is done by properly
966 * programming the FEC's MII data register.
968 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
969 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
971 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA | phy | reg);
974 * wait for the related interrupt
976 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
980 printf ("Read MDIO failed...\n");
986 * clear mii interrupt bit
988 eth->ievent = 0x00800000;
991 * it's now safe to read the PHY's register
993 retVal = (uint16) eth->mii_data;
998 /********************************************************************/
999 int fec5xxx_miiphy_write(struct mii_dev *bus, int phyAddr, int devad,
1000 int regAddr, u16 data)
1002 ethernet_regs *eth = (ethernet_regs *)MPC5XXX_FEC;
1003 uint32 reg; /* convenient holder for the PHY register */
1004 uint32 phy; /* convenient holder for the PHY */
1005 int timeout = 0xffff;
1007 reg = regAddr << FEC_MII_DATA_RA_SHIFT;
1008 phy = phyAddr << FEC_MII_DATA_PA_SHIFT;
1010 eth->mii_data = (FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR |
1011 FEC_MII_DATA_TA | phy | reg | data);
1014 * wait for the MII interrupt
1016 while ((timeout--) && (!(eth->ievent & 0x00800000))) ;
1020 printf ("Write MDIO failed...\n");
1026 * clear MII interrupt bit
1028 eth->ievent = 0x00800000;