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
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 static uint32 local_crc32(char *string, unsigned int crc_value, int len);
36 uint8 data[1500]; /* actual data */
37 int length; /* actual length */
38 int used; /* buffer in use or not */
39 uint8 head[16]; /* MAC header(6 + 6 + 2) + 2(aligned) */
42 int fec5xxx_miiphy_read(char *devname, uint8 phyAddr, uint8 regAddr, uint16 * retVal);
43 int fec5xxx_miiphy_write(char *devname, uint8 phyAddr, uint8 regAddr, uint16 data);
45 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis);
47 /********************************************************************/
49 static void mpc5xxx_fec_phydump (char *devname)
52 uint8 phyAddr = CONFIG_PHY_ADDR;
54 #if CONFIG_PHY_TYPE == 0x79c874 /* AMD Am79C874 */
55 /* regs to print: 0...7, 16...19, 21, 23, 24 */
56 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
57 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
59 /* regs to print: 0...8, 16...20 */
60 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
61 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
65 for (i = 0; i < 32; i++) {
67 miiphy_read(devname, phyAddr, i, &phyStatus);
68 printf("Mii reg %d: 0x%04x\n", i, phyStatus);
74 /********************************************************************/
75 static int mpc5xxx_fec_rbd_init(mpc5xxx_fec_priv *fec)
81 for (ix = 0; ix < FEC_RBD_NUM; ix++) {
83 data = (char *)malloc(FEC_MAX_PKT_SIZE);
85 printf ("RBD INIT FAILED\n");
88 fec->rbdBase[ix].dataPointer = (uint32)data;
90 fec->rbdBase[ix].status = FEC_RBD_EMPTY;
91 fec->rbdBase[ix].dataLength = 0;
96 * have the last RBD to close the ring
98 fec->rbdBase[ix - 1].status |= FEC_RBD_WRAP;
104 /********************************************************************/
105 static void mpc5xxx_fec_tbd_init(mpc5xxx_fec_priv *fec)
109 for (ix = 0; ix < FEC_TBD_NUM; ix++) {
110 fec->tbdBase[ix].status = 0;
114 * Have the last TBD to close the ring
116 fec->tbdBase[ix - 1].status |= FEC_TBD_WRAP;
119 * Initialize some indices
122 fec->usedTbdIndex = 0;
123 fec->cleanTbdNum = FEC_TBD_NUM;
126 /********************************************************************/
127 static void mpc5xxx_fec_rbd_clean(mpc5xxx_fec_priv *fec, volatile FEC_RBD * pRbd)
130 * Reset buffer descriptor as empty
132 if ((fec->rbdIndex) == (FEC_RBD_NUM - 1))
133 pRbd->status = (FEC_RBD_WRAP | FEC_RBD_EMPTY);
135 pRbd->status = FEC_RBD_EMPTY;
137 pRbd->dataLength = 0;
140 * Now, we have an empty RxBD, restart the SmartDMA receive task
142 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
147 fec->rbdIndex = (fec->rbdIndex + 1) % FEC_RBD_NUM;
150 /********************************************************************/
151 static void mpc5xxx_fec_tbd_scrub(mpc5xxx_fec_priv *fec)
153 volatile FEC_TBD *pUsedTbd;
156 printf ("tbd_scrub: fec->cleanTbdNum = %d, fec->usedTbdIndex = %d\n",
157 fec->cleanTbdNum, fec->usedTbdIndex);
161 * process all the consumed TBDs
163 while (fec->cleanTbdNum < FEC_TBD_NUM) {
164 pUsedTbd = &fec->tbdBase[fec->usedTbdIndex];
165 if (pUsedTbd->status & FEC_TBD_READY) {
167 printf("Cannot clean TBD %d, in use\n", fec->cleanTbdNum);
173 * clean this buffer descriptor
175 if (fec->usedTbdIndex == (FEC_TBD_NUM - 1))
176 pUsedTbd->status = FEC_TBD_WRAP;
178 pUsedTbd->status = 0;
181 * update some indeces for a correct handling of the TBD ring
184 fec->usedTbdIndex = (fec->usedTbdIndex + 1) % FEC_TBD_NUM;
188 /********************************************************************/
189 static void mpc5xxx_fec_set_hwaddr(mpc5xxx_fec_priv *fec, char *mac)
191 uint8 currByte; /* byte for which to compute the CRC */
192 int byte; /* loop - counter */
193 int bit; /* loop - counter */
194 uint32 crc = 0xffffffff; /* initial value */
197 * The algorithm used is the following:
198 * we loop on each of the six bytes of the provided address,
199 * and we compute the CRC by left-shifting the previous
200 * value by one position, so that each bit in the current
201 * byte of the address may contribute the calculation. If
202 * the latter and the MSB in the CRC are different, then
203 * the CRC value so computed is also ex-ored with the
204 * "polynomium generator". The current byte of the address
205 * is also shifted right by one bit at each iteration.
206 * This is because the CRC generatore in hardware is implemented
207 * as a shift-register with as many ex-ores as the radixes
208 * in the polynomium. This suggests that we represent the
209 * polynomiumm itself as a 32-bit constant.
211 for (byte = 0; byte < 6; byte++) {
212 currByte = mac[byte];
213 for (bit = 0; bit < 8; bit++) {
214 if ((currByte & 0x01) ^ (crc & 0x01)) {
216 crc = crc ^ 0xedb88320;
227 * Set individual hash table register
230 fec->eth->iaddr1 = (1 << (crc - 32));
231 fec->eth->iaddr2 = 0;
233 fec->eth->iaddr1 = 0;
234 fec->eth->iaddr2 = (1 << crc);
238 * Set physical address
240 fec->eth->paddr1 = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
241 fec->eth->paddr2 = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
244 /********************************************************************/
245 static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
247 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
248 struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA;
251 printf ("mpc5xxx_fec_init... Begin\n");
254 mpc5xxx_fec_init_phy(dev, bis);
257 * Initialize RxBD/TxBD rings
259 mpc5xxx_fec_rbd_init(fec);
260 mpc5xxx_fec_tbd_init(fec);
263 * Clear FEC-Lite interrupt event register(IEVENT)
265 fec->eth->ievent = 0xffffffff;
268 * Set interrupt mask register
270 fec->eth->imask = 0x00000000;
273 * Set FEC-Lite receive control register(R_CNTRL):
275 if (fec->xcv_type == SEVENWIRE) {
277 * Frame length=1518; 7-wire mode
279 fec->eth->r_cntrl = 0x05ee0020; /*0x05ee0000;FIXME */
282 * Frame length=1518; MII mode;
284 fec->eth->r_cntrl = 0x05ee0024; /*0x05ee0004;FIXME */
287 fec->eth->x_cntrl = 0x00000000; /* half-duplex, heartbeat disabled */
290 * Set Opcode/Pause Duration Register
292 fec->eth->op_pause = 0x00010020; /*FIXME 0xffff0020; */
295 * Set Rx FIFO alarm and granularity value
297 fec->eth->rfifo_cntrl = 0x0c000000
298 | (fec->eth->rfifo_cntrl & ~0x0f000000);
299 fec->eth->rfifo_alarm = 0x0000030c;
301 if (fec->eth->rfifo_status & 0x00700000 ) {
302 printf("mpc5xxx_fec_init() RFIFO error\n");
307 * Set Tx FIFO granularity value
309 fec->eth->tfifo_cntrl = 0x0c000000
310 | (fec->eth->tfifo_cntrl & ~0x0f000000);
312 printf("tfifo_status: 0x%08x\n", fec->eth->tfifo_status);
313 printf("tfifo_alarm: 0x%08x\n", fec->eth->tfifo_alarm);
317 * Set transmit fifo watermark register(X_WMRK), default = 64
319 fec->eth->tfifo_alarm = 0x00000080;
320 fec->eth->x_wmrk = 0x2;
323 * Set individual address filter for unicast address
324 * and set physical address registers.
326 mpc5xxx_fec_set_hwaddr(fec, (char *)dev->enetaddr);
329 * Set multicast address filter
331 fec->eth->gaddr1 = 0x00000000;
332 fec->eth->gaddr2 = 0x00000000;
335 * Turn ON cheater FSM: ????
337 fec->eth->xmit_fsm = 0x03000000;
339 #if defined(CONFIG_MPC5200)
341 * Turn off COMM bus prefetch in the MGT5200 BestComm. It doesn't
342 * work w/ the current receive task.
344 sdma->PtdCntrl |= 0x00000001;
348 * Set priority of different initiators
350 sdma->IPR0 = 7; /* always */
351 sdma->IPR3 = 6; /* Eth RX */
352 sdma->IPR4 = 5; /* Eth Tx */
355 * Clear SmartDMA task interrupt pending bits
357 SDMA_CLEAR_IEVENT(FEC_RECV_TASK_NO);
360 * Initialize SmartDMA parameters stored in SRAM
362 *(volatile int *)FEC_TBD_BASE = (int)fec->tbdBase;
363 *(volatile int *)FEC_RBD_BASE = (int)fec->rbdBase;
364 *(volatile int *)FEC_TBD_NEXT = (int)fec->tbdBase;
365 *(volatile int *)FEC_RBD_NEXT = (int)fec->rbdBase;
368 * Enable FEC-Lite controller
370 fec->eth->ecntrl |= 0x00000006;
373 if (fec->xcv_type != SEVENWIRE)
374 mpc5xxx_fec_phydump (dev->name);
378 * Enable SmartDMA receive task
380 SDMA_TASK_ENABLE(FEC_RECV_TASK_NO);
383 printf("mpc5xxx_fec_init... Done \n");
389 /********************************************************************/
390 static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
392 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
393 const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
394 static int initialized = 0;
401 printf ("mpc5xxx_fec_init_phy... Begin\n");
405 * Initialize GPIO pins
407 if (fec->xcv_type == SEVENWIRE) {
408 /* 10MBit with 7-wire operation */
409 #if defined(CONFIG_TOTAL5200)
410 /* 7-wire and USB2 on Ethernet */
411 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00030000;
412 #else /* !CONFIG_TOTAL5200 */
414 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00020000;
415 #endif /* CONFIG_TOTAL5200 */
417 /* 100MBit with MD operation */
418 *(vu_long *)MPC5XXX_GPS_PORT_CONFIG |= 0x00050000;
422 * Clear FEC-Lite interrupt event register(IEVENT)
424 fec->eth->ievent = 0xffffffff;
427 * Set interrupt mask register
429 fec->eth->imask = 0x00000000;
432 * In original Promess-provided code PHY initialization is disabled with the
433 * following comment: "Phy initialization is DISABLED for now. There was a
434 * problem with running 100 Mbps on PRO board". Thus we temporarily disable
435 * PHY initialization for the Motion-PRO board, until a proper fix is found.
438 if (fec->xcv_type != SEVENWIRE) {
440 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
441 * and do not drop the Preamble.
443 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
446 if (fec->xcv_type != SEVENWIRE) {
448 * Initialize PHY(LXT971A):
450 * Generally, on power up, the LXT971A reads its configuration
451 * pins to check for forced operation, If not cofigured for
452 * forced operation, it uses auto-negotiation/parallel detection
453 * to automatically determine line operating conditions.
454 * If the PHY device on the other side of the link supports
455 * auto-negotiation, the LXT971A auto-negotiates with it
456 * using Fast Link Pulse(FLP) Bursts. If the PHY partner does not
457 * support auto-negotiation, the LXT971A automatically detects
458 * the presence of either link pulses(10Mbps PHY) or Idle
459 * symbols(100Mbps) and sets its operating conditions accordingly.
461 * When auto-negotiation is controlled by software, the following
462 * steps are recommended.
465 * The physical address is dependent on hardware configuration.
472 * Reset PHY, then delay 300ns
474 miiphy_write(dev->name, phyAddr, 0x0, 0x8000);
477 #if defined(CONFIG_UC101) || defined(CONFIG_MUCMC52)
478 /* Set the LED configuration Register for the UC101
480 miiphy_write(dev->name, phyAddr, 0x14, 0x4122);
482 if (fec->xcv_type == MII10) {
484 * Force 10Base-T, FDX operation
487 printf("Forcing 10 Mbps ethernet link... ");
489 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
491 miiphy_write(dev->name, fec, phyAddr, 0x0, 0x0100);
493 miiphy_write(dev->name, phyAddr, 0x0, 0x0180);
496 do { /* wait for link status to go down */
498 if ((timeout--) == 0) {
500 printf("hmmm, should not have waited...");
504 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
508 } while ((phyStatus & 0x0004)); /* !link up */
511 do { /* wait for link status to come back up */
513 if ((timeout--) == 0) {
514 printf("failed. Link is down.\n");
517 miiphy_read(dev->name, phyAddr, 0x1, &phyStatus);
521 } while (!(phyStatus & 0x0004)); /* !link up */
526 } else { /* MII100 */
528 * Set the auto-negotiation advertisement register bits
530 miiphy_write(dev->name, phyAddr, 0x4, 0x01e1);
533 * Set MDIO bit 0.12 = 1(&& bit 0.9=1?) to enable auto-negotiation
535 miiphy_write(dev->name, phyAddr, 0x0, 0x1200);
538 * Wait for AN completion
544 if ((timeout--) == 0) {
546 printf("PHY auto neg 0 failed...\n");
551 if (miiphy_read(dev->name, phyAddr, 0x1, &phyStatus) != 0) {
553 printf("PHY auto neg 1 failed 0x%04x...\n", phyStatus);
557 } while (!(phyStatus & 0x0004));
560 printf("PHY auto neg complete! \n");
567 if (fec->xcv_type != SEVENWIRE)
568 mpc5xxx_fec_phydump (dev->name);
573 printf("mpc5xxx_fec_init_phy... Done \n");
579 /********************************************************************/
580 static void mpc5xxx_fec_halt(struct eth_device *dev)
582 #if defined(CONFIG_MPC5200)
583 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);
614 #if defined(CONFIG_MPC5200)
616 * Turn on COMM bus prefetch in the MGT5200 BestComm after we're
617 * done. It doesn't work w/ the current receive task.
619 sdma->PtdCntrl &= ~0x00000001;
623 * Disable the Ethernet Controller
625 fec->eth->ecntrl &= 0xfffffffd;
628 * Clear FIFO status registers
630 fec->eth->rfifo_status &= 0x00700000;
631 fec->eth->tfifo_status &= 0x00700000;
633 fec->eth->reset_cntrl = 0x01000000;
636 * Issue a reset command to the FEC chip
638 fec->eth->ecntrl |= 0x1;
641 * wait at least 16 clock cycles
645 /* don't leave the MII speed set to zero */
646 if (fec->xcv_type != SEVENWIRE) {
648 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
649 * and do not drop the Preamble.
651 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
655 printf("Ethernet task stopped\n");
660 /********************************************************************/
662 static void tfifo_print(char *devname, mpc5xxx_fec_priv *fec)
664 uint16 phyAddr = CONFIG_PHY_ADDR;
667 if ((fec->eth->tfifo_lrf_ptr != fec->eth->tfifo_lwf_ptr)
668 || (fec->eth->tfifo_rdptr != fec->eth->tfifo_wrptr)) {
670 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
671 printf("\nphyStatus: 0x%04x\n", phyStatus);
672 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
673 printf("ievent: 0x%08x\n", fec->eth->ievent);
674 printf("x_status: 0x%08x\n", fec->eth->x_status);
675 printf("tfifo: status 0x%08x\n", fec->eth->tfifo_status);
677 printf(" control 0x%08x\n", fec->eth->tfifo_cntrl);
678 printf(" lrfp 0x%08x\n", fec->eth->tfifo_lrf_ptr);
679 printf(" lwfp 0x%08x\n", fec->eth->tfifo_lwf_ptr);
680 printf(" alarm 0x%08x\n", fec->eth->tfifo_alarm);
681 printf(" readptr 0x%08x\n", fec->eth->tfifo_rdptr);
682 printf(" writptr 0x%08x\n", fec->eth->tfifo_wrptr);
686 static void rfifo_print(char *devname, mpc5xxx_fec_priv *fec)
688 uint16 phyAddr = CONFIG_PHY_ADDR;
691 if ((fec->eth->rfifo_lrf_ptr != fec->eth->rfifo_lwf_ptr)
692 || (fec->eth->rfifo_rdptr != fec->eth->rfifo_wrptr)) {
694 miiphy_read(devname, phyAddr, 0x1, &phyStatus);
695 printf("\nphyStatus: 0x%04x\n", phyStatus);
696 printf("ecntrl: 0x%08x\n", fec->eth->ecntrl);
697 printf("ievent: 0x%08x\n", fec->eth->ievent);
698 printf("x_status: 0x%08x\n", fec->eth->x_status);
699 printf("rfifo: status 0x%08x\n", fec->eth->rfifo_status);
701 printf(" control 0x%08x\n", fec->eth->rfifo_cntrl);
702 printf(" lrfp 0x%08x\n", fec->eth->rfifo_lrf_ptr);
703 printf(" lwfp 0x%08x\n", fec->eth->rfifo_lwf_ptr);
704 printf(" alarm 0x%08x\n", fec->eth->rfifo_alarm);
705 printf(" readptr 0x%08x\n", fec->eth->rfifo_rdptr);
706 printf(" writptr 0x%08x\n", fec->eth->rfifo_wrptr);
711 /********************************************************************/
713 static int mpc5xxx_fec_send(struct eth_device *dev, volatile void *eth_data,
717 * This routine transmits one frame. This routine only accepts
718 * 6-byte Ethernet addresses.
720 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
721 volatile FEC_TBD *pTbd;
724 printf("tbd status: 0x%04x\n", fec->tbdBase[0].status);
725 tfifo_print(dev->name, fec);
729 * Clear Tx BD ring at first
731 mpc5xxx_fec_tbd_scrub(fec);
734 * Check for valid length of data.
736 if ((data_length > 1500) || (data_length <= 0)) {
741 * Check the number of vacant TxBDs.
743 if (fec->cleanTbdNum < 1) {
745 printf("No available TxBDs ...\n");
751 * Get the first TxBD to send the mac header
753 pTbd = &fec->tbdBase[fec->tbdIndex];
754 pTbd->dataLength = data_length;
755 pTbd->dataPointer = (uint32)eth_data;
756 pTbd->status |= FEC_TBD_LAST | FEC_TBD_TC | FEC_TBD_READY;
757 fec->tbdIndex = (fec->tbdIndex + 1) % FEC_TBD_NUM;
760 printf("SDMA_TASK_ENABLE, fec->tbdIndex = %d \n", fec->tbdIndex);
766 if (fec->xcv_type != SEVENWIRE) {
768 miiphy_read(dev->name, 0, 0x1, &phyStatus);
772 * Enable SmartDMA transmit task
776 tfifo_print(dev->name, fec);
778 SDMA_TASK_ENABLE (FEC_XMIT_TASK_NO);
780 tfifo_print(dev->name, fec);
786 fec->cleanTbdNum -= 1;
788 #if (DEBUG & 0x129) && (DEBUG & 0x80000000)
789 printf ("smartDMA ethernet Tx task enabled\n");
792 * wait until frame is sent .
794 while (pTbd->status & FEC_TBD_READY) {
797 printf ("TDB status = %04x\n", pTbd->status);
805 /********************************************************************/
806 static int mpc5xxx_fec_recv(struct eth_device *dev)
809 * This command pulls one frame from the card
811 mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
812 volatile FEC_RBD *pRbd = &fec->rbdBase[fec->rbdIndex];
813 unsigned long ievent;
814 int frame_length, len = 0;
816 uchar buff[FEC_MAX_PKT_SIZE];
819 printf ("mpc5xxx_fec_recv %d Start...\n", fec->rbdIndex);
826 * Check if any critical events have happened
828 ievent = fec->eth->ievent;
829 fec->eth->ievent = ievent;
830 if (ievent & 0x20060000) {
831 /* BABT, Rx/Tx FIFO errors */
832 mpc5xxx_fec_halt(dev);
833 mpc5xxx_fec_init(dev, NULL);
836 if (ievent & 0x80000000) {
837 /* Heartbeat error */
838 fec->eth->x_cntrl |= 0x00000001;
840 if (ievent & 0x10000000) {
841 /* Graceful stop complete */
842 if (fec->eth->x_cntrl & 0x00000001) {
843 mpc5xxx_fec_halt(dev);
844 fec->eth->x_cntrl &= ~0x00000001;
845 mpc5xxx_fec_init(dev, NULL);
849 if (!(pRbd->status & FEC_RBD_EMPTY)) {
850 if ((pRbd->status & FEC_RBD_LAST) && !(pRbd->status & FEC_RBD_ERR) &&
851 ((pRbd->dataLength - 4) > 14)) {
854 * Get buffer address and size
856 frame = (NBUF *)pRbd->dataPointer;
857 frame_length = pRbd->dataLength - 4;
862 printf("recv data hdr:");
863 for (i = 0; i < 14; i++)
864 printf("%x ", *(frame->head + i));
869 * Fill the buffer and pass it to upper layers
871 memcpy(buff, frame->head, 14);
872 memcpy(buff + 14, frame->data, frame_length);
873 NetReceive(buff, frame_length);
877 * Reset buffer descriptor as empty
879 mpc5xxx_fec_rbd_clean(fec, pRbd);
881 SDMA_CLEAR_IEVENT (FEC_RECV_TASK_NO);
886 /********************************************************************/
887 int mpc5xxx_fec_initialize(bd_t * bis)
889 mpc5xxx_fec_priv *fec;
890 struct eth_device *dev;
892 char env_enetaddr[6];
895 fec = (mpc5xxx_fec_priv *)malloc(sizeof(*fec));
896 dev = (struct eth_device *)malloc(sizeof(*dev));
897 memset(dev, 0, sizeof *dev);
899 fec->eth = (ethernet_regs *)MPC5XXX_FEC;
900 fec->tbdBase = (FEC_TBD *)FEC_BD_BASE;
901 fec->rbdBase = (FEC_RBD *)(FEC_BD_BASE + FEC_TBD_NUM * sizeof(FEC_TBD));
902 #if defined(CONFIG_MPC5xxx_FEC_MII100)
903 fec->xcv_type = MII100;
904 #elif defined(CONFIG_MPC5xxx_FEC_MII10)
905 fec->xcv_type = MII10;
906 #elif defined(CONFIG_MPC5xxx_FEC_SEVENWIRE)
907 fec->xcv_type = SEVENWIRE;
909 #error fec->xcv_type not initialized.
911 if (fec->xcv_type != SEVENWIRE) {
913 * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
914 * and do not drop the Preamble.
916 fec->eth->mii_speed = (((gd->ipb_clk >> 20) / 5) << 1); /* No MII for 7-wire mode */
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 ETHERNET");
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(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(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;
1030 static uint32 local_crc32(char *string, unsigned int crc_value, int len)
1034 unsigned int crc, count;
1040 * crc = 0xffffffff; * The initialized value should be 0xffffffff
1044 for (i = len; --i >= 0;) {
1046 for (count = 0; count < 8; count++) {
1047 if ((c & 0x01) ^ (crc & 0x01)) {
1049 crc = crc ^ 0xedb88320;
1058 * In big endian system, do byte swaping for crc value