2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2007 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 * SPDX-License-Identifier: GPL-2.0+
21 /* Ethernet Transmit and Receive Buffers */
22 #define DBUF_LENGTH 1520
23 #define PKT_MAXBUF_SIZE 1518
24 #define PKT_MINBUF_SIZE 64
25 #define PKT_MAXBLR_SIZE 1536
26 #define LAST_PKTBUFSRX PKTBUFSRX - 1
27 #define BD_ENET_RX_W_E (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY)
28 #define BD_ENET_TX_RDY_LST (BD_ENET_TX_READY | BD_ENET_TX_LAST)
29 #define FIFO_ERRSTAT (FIFO_STAT_RXW | FIFO_STAT_UF | FIFO_STAT_OF)
31 /* RxBD bits definitions */
32 #define BD_ENET_RX_ERR (BD_ENET_RX_LG | BD_ENET_RX_NO | BD_ENET_RX_CR | \
33 BD_ENET_RX_OV | BD_ENET_RX_TR)
35 #include <asm/immap.h>
36 #include <asm/fsl_mcdmafec.h>
40 DECLARE_GLOBAL_DATA_PTR;
42 struct fec_info_dma fec_info[] = {
43 #ifdef CONFIG_SYS_FEC0_IOBASE
46 CONFIG_SYS_FEC0_IOBASE, /* io base */
47 CONFIG_SYS_FEC0_PINMUX, /* gpio pin muxing */
48 CONFIG_SYS_FEC0_MIIBASE, /* mii base */
50 0, /* duplex and speed */
58 0, /* initialized flag */
59 (struct fec_info_dma *)-1, /* next */
60 FEC0_RX_TASK, /* rxTask */
61 FEC0_TX_TASK, /* txTask */
62 FEC0_RX_PRIORITY, /* rxPri */
63 FEC0_TX_PRIORITY, /* txPri */
64 FEC0_RX_INIT, /* rxInit */
65 FEC0_TX_INIT, /* txInit */
70 #ifdef CONFIG_SYS_FEC1_IOBASE
73 CONFIG_SYS_FEC1_IOBASE, /* io base */
74 CONFIG_SYS_FEC1_PINMUX, /* gpio pin muxing */
75 CONFIG_SYS_FEC1_MIIBASE, /* mii base */
77 0, /* duplex and speed */
79 0, /* phy name init */
80 #ifdef CONFIG_SYS_DMA_USE_INTSRAM
81 (cbd_t *)DBUF_LENGTH, /* RX BD */
89 0, /* initialized flag */
90 (struct fec_info_dma *)-1, /* next */
91 FEC1_RX_TASK, /* rxTask */
92 FEC1_TX_TASK, /* txTask */
93 FEC1_RX_PRIORITY, /* rxPri */
94 FEC1_TX_PRIORITY, /* txPri */
95 FEC1_RX_INIT, /* rxInit */
96 FEC1_TX_INIT, /* txInit */
103 static int fec_send(struct eth_device *dev, void *packet, int length);
104 static int fec_recv(struct eth_device *dev);
105 static int fec_init(struct eth_device *dev, bd_t * bd);
106 static void fec_halt(struct eth_device *dev);
109 static void dbg_fec_regs(struct eth_device *dev)
111 struct fec_info_dma *info = dev->priv;
112 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
115 printf("ievent %x - %x\n", (int)&fecp->eir, fecp->eir);
116 printf("imask %x - %x\n", (int)&fecp->eimr, fecp->eimr);
117 printf("ecntrl %x - %x\n", (int)&fecp->ecr, fecp->ecr);
118 printf("mii_mframe %x - %x\n", (int)&fecp->mmfr, fecp->mmfr);
119 printf("mii_speed %x - %x\n", (int)&fecp->mscr, fecp->mscr);
120 printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc);
121 printf("r_cntrl %x - %x\n", (int)&fecp->rcr, fecp->rcr);
122 printf("r hash %x - %x\n", (int)&fecp->rhr, fecp->rhr);
123 printf("x_cntrl %x - %x\n", (int)&fecp->tcr, fecp->tcr);
124 printf("padr_l %x - %x\n", (int)&fecp->palr, fecp->palr);
125 printf("padr_u %x - %x\n", (int)&fecp->paur, fecp->paur);
126 printf("op_pause %x - %x\n", (int)&fecp->opd, fecp->opd);
127 printf("iadr_u %x - %x\n", (int)&fecp->iaur, fecp->iaur);
128 printf("iadr_l %x - %x\n", (int)&fecp->ialr, fecp->ialr);
129 printf("gadr_u %x - %x\n", (int)&fecp->gaur, fecp->gaur);
130 printf("gadr_l %x - %x\n", (int)&fecp->galr, fecp->galr);
131 printf("x_wmrk %x - %x\n", (int)&fecp->tfwr, fecp->tfwr);
132 printf("r_fdata %x - %x\n", (int)&fecp->rfdr, fecp->rfdr);
133 printf("r_fstat %x - %x\n", (int)&fecp->rfsr, fecp->rfsr);
134 printf("r_fctrl %x - %x\n", (int)&fecp->rfcr, fecp->rfcr);
135 printf("r_flrfp %x - %x\n", (int)&fecp->rlrfp, fecp->rlrfp);
136 printf("r_flwfp %x - %x\n", (int)&fecp->rlwfp, fecp->rlwfp);
137 printf("r_frfar %x - %x\n", (int)&fecp->rfar, fecp->rfar);
138 printf("r_frfrp %x - %x\n", (int)&fecp->rfrp, fecp->rfrp);
139 printf("r_frfwp %x - %x\n", (int)&fecp->rfwp, fecp->rfwp);
140 printf("t_fdata %x - %x\n", (int)&fecp->tfdr, fecp->tfdr);
141 printf("t_fstat %x - %x\n", (int)&fecp->tfsr, fecp->tfsr);
142 printf("t_fctrl %x - %x\n", (int)&fecp->tfcr, fecp->tfcr);
143 printf("t_flrfp %x - %x\n", (int)&fecp->tlrfp, fecp->tlrfp);
144 printf("t_flwfp %x - %x\n", (int)&fecp->tlwfp, fecp->tlwfp);
145 printf("t_ftfar %x - %x\n", (int)&fecp->tfar, fecp->tfar);
146 printf("t_ftfrp %x - %x\n", (int)&fecp->tfrp, fecp->tfrp);
147 printf("t_ftfwp %x - %x\n", (int)&fecp->tfwp, fecp->tfwp);
148 printf("frst %x - %x\n", (int)&fecp->frst, fecp->frst);
149 printf("ctcwr %x - %x\n", (int)&fecp->ctcwr, fecp->ctcwr);
153 static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd,
156 if ((dup_spd >> 16) == FULL) {
157 /* Set maximum frame length */
158 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE |
159 FEC_RCR_PROM | 0x100;
160 fecp->tcr = FEC_TCR_FDEN;
162 /* Half duplex mode */
163 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) |
164 FEC_RCR_MII_MODE | FEC_RCR_DRT;
165 fecp->tcr &= ~FEC_TCR_FDEN;
168 if ((dup_spd & 0xFFFF) == _100BASET) {
172 bd->bi_ethspeed = 100;
177 bd->bi_ethspeed = 10;
181 static int fec_send(struct eth_device *dev, void *packet, int length)
183 struct fec_info_dma *info = dev->priv;
184 cbd_t *pTbd, *pUsedTbd;
187 miiphy_read(dev->name, info->phy_addr, MII_BMSR, &phyStatus);
189 /* process all the consumed TBDs */
190 while (info->cleanTbdNum < CONFIG_SYS_TX_ETH_BUFFER) {
191 pUsedTbd = &info->txbd[info->usedTbdIdx];
192 if (pUsedTbd->cbd_sc & BD_ENET_TX_READY) {
194 printf("Cannot clean TBD %d, in use\n",
200 /* clean this buffer descriptor */
201 if (info->usedTbdIdx == (CONFIG_SYS_TX_ETH_BUFFER - 1))
202 pUsedTbd->cbd_sc = BD_ENET_TX_WRAP;
204 pUsedTbd->cbd_sc = 0;
206 /* update some indeces for a correct handling of the TBD ring */
208 info->usedTbdIdx = (info->usedTbdIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER;
211 /* Check for valid length of data. */
212 if ((length > 1500) || (length <= 0)) {
216 /* Check the number of vacant TxBDs. */
217 if (info->cleanTbdNum < 1) {
218 printf("No available TxBDs ...\n");
222 /* Get the first TxBD to send the mac header */
223 pTbd = &info->txbd[info->txIdx];
224 pTbd->cbd_datlen = length;
225 pTbd->cbd_bufaddr = (u32) packet;
226 pTbd->cbd_sc |= BD_ENET_TX_LAST | BD_ENET_TX_TC | BD_ENET_TX_READY;
227 info->txIdx = (info->txIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER;
229 /* Enable DMA transmit task */
230 MCD_continDma(info->txTask);
232 info->cleanTbdNum -= 1;
234 /* wait until frame is sent . */
235 while (pTbd->cbd_sc & BD_ENET_TX_READY) {
239 return (int)(info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS);
242 static int fec_recv(struct eth_device *dev)
244 struct fec_info_dma *info = dev->priv;
245 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
247 cbd_t *pRbd = &info->rxbd[info->rxIdx];
249 int frame_length, len = 0;
251 /* Check if any critical events have happened */
256 if (ievent & (FEC_EIR_BABT | FEC_EIR_TXERR | FEC_EIR_RXERR)) {
257 printf("fec_recv: error\n");
263 if (ievent & FEC_EIR_HBERR) {
264 /* Heartbeat error */
265 fecp->tcr |= FEC_TCR_GTS;
268 if (ievent & FEC_EIR_GRA) {
269 /* Graceful stop complete */
270 if (fecp->tcr & FEC_TCR_GTS) {
271 printf("fec_recv: tcr_gts\n");
273 fecp->tcr &= ~FEC_TCR_GTS;
279 if (!(pRbd->cbd_sc & BD_ENET_RX_EMPTY)) {
280 if ((pRbd->cbd_sc & BD_ENET_RX_LAST)
281 && !(pRbd->cbd_sc & BD_ENET_RX_ERR)
282 && ((pRbd->cbd_datlen - 4) > 14)) {
284 /* Get buffer address and size */
285 frame_length = pRbd->cbd_datlen - 4;
287 /* Fill the buffer and pass it to upper layers */
288 NetReceive((uchar *)pRbd->cbd_bufaddr, frame_length);
292 /* Reset buffer descriptor as empty */
293 if ((info->rxIdx) == (PKTBUFSRX - 1))
294 pRbd->cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
296 pRbd->cbd_sc = BD_ENET_RX_EMPTY;
298 pRbd->cbd_datlen = PKTSIZE_ALIGN;
300 /* Now, we have an empty RxBD, restart the DMA receive task */
301 MCD_continDma(info->rxTask);
303 /* Increment BD count */
304 info->rxIdx = (info->rxIdx + 1) % PKTBUFSRX;
310 static void fec_set_hwaddr(volatile fecdma_t * fecp, u8 * mac)
312 u8 currByte; /* byte for which to compute the CRC */
313 int byte; /* loop - counter */
314 int bit; /* loop - counter */
315 u32 crc = 0xffffffff; /* initial value */
317 for (byte = 0; byte < 6; byte++) {
318 currByte = mac[byte];
319 for (bit = 0; bit < 8; bit++) {
320 if ((currByte & 0x01) ^ (crc & 0x01)) {
322 crc = crc ^ 0xedb88320;
332 /* Set individual hash table register */
334 fecp->ialr = (1 << (crc - 32));
338 fecp->iaur = (1 << crc);
341 /* Set physical address */
342 fecp->palr = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
343 fecp->paur = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
345 /* Clear multicast address hash table */
350 static int fec_init(struct eth_device *dev, bd_t * bd)
352 struct fec_info_dma *info = dev->priv;
353 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
358 printf("fec_init: iobase 0x%08x ...\n", info->iobase);
361 fecpin_setclear(dev, 1);
365 #if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \
366 defined (CONFIG_SYS_DISCOVER_PHY)
370 set_fec_duplex_speed(fecp, bd, info->dup_spd);
372 #ifndef CONFIG_SYS_DISCOVER_PHY
373 set_fec_duplex_speed(fecp, bd, (FECDUPLEX << 16) | FECSPEED);
374 #endif /* ifndef CONFIG_SYS_DISCOVER_PHY */
375 #endif /* CONFIG_CMD_MII || CONFIG_MII */
377 /* We use strictly polling mode only */
380 /* Clear any pending interrupt */
381 fecp->eir = 0xffffffff;
383 /* Set station address */
384 if ((u32) fecp == CONFIG_SYS_FEC0_IOBASE)
385 eth_getenv_enetaddr("ethaddr", enetaddr);
387 eth_getenv_enetaddr("eth1addr", enetaddr);
388 fec_set_hwaddr(fecp, enetaddr);
390 /* Set Opcode/Pause Duration Register */
391 fecp->opd = 0x00010020;
393 /* Setup Buffers and Buffer Desriptors */
397 /* Setup Receiver Buffer Descriptors (13.14.24.18)
398 * Settings: Empty, Wrap */
399 for (i = 0; i < PKTBUFSRX; i++) {
400 info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
401 info->rxbd[i].cbd_datlen = PKTSIZE_ALIGN;
402 info->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
404 info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
406 /* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
407 * Settings: Last, Tx CRC */
408 for (i = 0; i < CONFIG_SYS_TX_ETH_BUFFER; i++) {
409 info->txbd[i].cbd_sc = 0;
410 info->txbd[i].cbd_datlen = 0;
411 info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]);
413 info->txbd[CONFIG_SYS_TX_ETH_BUFFER - 1].cbd_sc |= BD_ENET_TX_WRAP;
415 info->usedTbdIdx = 0;
416 info->cleanTbdNum = CONFIG_SYS_TX_ETH_BUFFER;
418 /* Set Rx FIFO alarm and granularity value */
419 fecp->rfcr = 0x0c000000;
420 fecp->rfar = 0x0000030c;
422 /* Set Tx FIFO granularity value */
423 fecp->tfcr = FIFO_CTRL_FRAME | FIFO_CTRL_GR(6) | 0x00040000;
424 fecp->tfar = 0x00000080;
427 fecp->ctcwr = 0x03000000;
429 /* Enable DMA receive task */
430 MCD_startDma(info->rxTask, /* Dma channel */
431 (s8 *) info->rxbd, /*Source Address */
432 0, /* Source increment */
433 (s8 *) (&fecp->rfdr), /* dest */
434 4, /* dest increment */
437 info->rxInit, /* initiator */
438 info->rxPri, /* priority */
439 (MCD_FECRX_DMA | MCD_TT_FLAGS_DEF), /* Flags */
440 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */
443 /* Enable DMA tx task with no ready buffer descriptors */
444 MCD_startDma(info->txTask, /* Dma channel */
445 (s8 *) info->txbd, /*Source Address */
446 0, /* Source increment */
447 (s8 *) (&fecp->tfdr), /* dest */
451 info->txInit, /* initiator */
452 info->txPri, /* priority */
453 (MCD_FECTX_DMA | MCD_TT_FLAGS_DEF), /* Flags */
454 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */
457 /* Now enable the transmit and receive processing */
458 fecp->ecr |= FEC_ECR_ETHER_EN;
463 static void fec_halt(struct eth_device *dev)
465 struct fec_info_dma *info = dev->priv;
466 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
467 int counter = 0xffff;
469 /* issue graceful stop command to the FEC transmitter if necessary */
470 fecp->tcr |= FEC_TCR_GTS;
472 /* wait for graceful stop to register */
473 while ((counter--) && (!(fecp->eir & FEC_EIR_GRA))) ;
475 /* Disable DMA tasks */
476 MCD_killDma(info->txTask);
477 MCD_killDma(info->rxTask);;
479 /* Disable the Ethernet Controller */
480 fecp->ecr &= ~FEC_ECR_ETHER_EN;
482 /* Clear FIFO status registers */
483 fecp->rfsr &= FIFO_ERRSTAT;
484 fecp->tfsr &= FIFO_ERRSTAT;
486 fecp->frst = 0x01000000;
488 /* Issue a reset command to the FEC chip */
489 fecp->ecr |= FEC_ECR_RESET;
491 /* wait at least 20 clock cycles */
495 printf("Ethernet task stopped\n");
499 int mcdmafec_initialize(bd_t * bis)
501 struct eth_device *dev;
503 #ifdef CONFIG_SYS_DMA_USE_INTSRAM
504 u32 tmp = CONFIG_SYS_INTSRAM + 0x2000;
507 for (i = 0; i < ARRAY_SIZE(fec_info); i++) {
510 (struct eth_device *)memalign(CONFIG_SYS_CACHELINE_SIZE,
515 memset(dev, 0, sizeof(*dev));
517 sprintf(dev->name, "FEC%d", fec_info[i].index);
519 dev->priv = &fec_info[i];
520 dev->init = fec_init;
521 dev->halt = fec_halt;
522 dev->send = fec_send;
523 dev->recv = fec_recv;
525 /* setup Receive and Transmit buffer descriptor */
526 #ifdef CONFIG_SYS_DMA_USE_INTSRAM
527 fec_info[i].rxbd = (cbd_t *)((u32)fec_info[i].rxbd + tmp);
528 tmp = (u32)fec_info[i].rxbd;
530 (cbd_t *)((u32)fec_info[i].txbd + tmp +
531 (PKTBUFSRX * sizeof(cbd_t)));
532 tmp = (u32)fec_info[i].txbd;
534 (char *)((u32)fec_info[i].txbuf + tmp +
535 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t)));
536 tmp = (u32)fec_info[i].txbuf;
539 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE,
540 (PKTBUFSRX * sizeof(cbd_t)));
542 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE,
543 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t)));
545 (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, DBUF_LENGTH);
549 printf("rxbd %x txbd %x\n",
550 (int)fec_info[i].rxbd, (int)fec_info[i].txbd);
553 fec_info[i].phy_name = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, 32);
557 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
558 miiphy_register(dev->name,
559 mcffec_miiphy_read, mcffec_miiphy_write);
563 fec_info[i - 1].next = &fec_info[i];
565 fec_info[i - 1].next = &fec_info[0];
568 bis->bi_ethspeed = 10;