2 * Freescale Three Speed Ethernet Controller driver
4 * Copyright 2004-2011, 2013 Freescale Semiconductor, Inc.
5 * (C) Copyright 2003, Motorola, Inc.
8 * SPDX-License-Identifier: GPL-2.0+
18 #include <asm/errno.h>
19 #include <asm/processor.h>
22 DECLARE_GLOBAL_DATA_PTR;
24 /* Default initializations for TSEC controllers. */
26 static struct tsec_info_struct tsec_info[] = {
28 STD_TSEC_INFO(1), /* TSEC1 */
31 STD_TSEC_INFO(2), /* TSEC2 */
33 #ifdef CONFIG_MPC85XX_FEC
35 .regs = TSEC_GET_REGS(2, 0x2000),
36 .devname = CONFIG_MPC85XX_FEC_NAME,
37 .phyaddr = FEC_PHY_ADDR,
39 .mii_devname = DEFAULT_MII_NAME
43 STD_TSEC_INFO(3), /* TSEC3 */
46 STD_TSEC_INFO(4), /* TSEC4 */
50 #define TBIANA_SETTINGS ( \
51 TBIANA_ASYMMETRIC_PAUSE \
52 | TBIANA_SYMMETRIC_PAUSE \
53 | TBIANA_FULL_DUPLEX \
56 /* By default force the TBI PHY into 1000Mbps full duplex when in SGMII mode */
57 #ifndef CONFIG_TSEC_TBICR_SETTINGS
58 #define CONFIG_TSEC_TBICR_SETTINGS ( \
64 #endif /* CONFIG_TSEC_TBICR_SETTINGS */
66 /* Configure the TBI for SGMII operation */
67 static void tsec_configure_serdes(struct tsec_private *priv)
70 * Access TBI PHY registers at given TSEC register offset as opposed
71 * to the register offset used for external PHY accesses
73 tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
74 0, TBI_ANA, TBIANA_SETTINGS);
75 tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
76 0, TBI_TBICON, TBICON_CLK_SELECT);
77 tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
78 0, TBI_CR, CONFIG_TSEC_TBICR_SETTINGS);
81 #ifdef CONFIG_MCAST_TFTP
83 /* CREDITS: linux gianfar driver, slightly adjusted... thanx. */
85 /* Set the appropriate hash bit for the given addr */
88 * The algorithm works like so:
89 * 1) Take the Destination Address (ie the multicast address), and
90 * do a CRC on it (little endian), and reverse the bits of the
92 * 2) Use the 8 most significant bits as a hash into a 256-entry
93 * table. The table is controlled through 8 32-bit registers:
94 * gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is entry
95 * 255. This means that the 3 most significant bits in the
96 * hash index which gaddr register to use, and the 5 other bits
97 * indicate which bit (assuming an IBM numbering scheme, which
98 * for PowerPC (tm) is usually the case) in the register holds
101 static int tsec_mcast_addr(struct eth_device *dev, const u8 *mcast_mac, u8 set)
103 struct tsec_private *priv = (struct tsec_private *)dev->priv;
104 struct tsec __iomem *regs = priv->regs;
106 u8 whichbit, whichreg;
108 result = ether_crc(MAC_ADDR_LEN, mcast_mac);
109 whichbit = (result >> 24) & 0x1f; /* the 5 LSB = which bit to set */
110 whichreg = result >> 29; /* the 3 MSB = which reg to set it in */
112 value = 1 << (31-whichbit);
115 setbits_be32(®s->hash.gaddr0 + whichreg, value);
117 clrbits_be32(®s->hash.gaddr0 + whichreg, value);
121 #endif /* Multicast TFTP ? */
124 * Initialized required registers to appropriate values, zeroing
125 * those we don't care about (unless zero is bad, in which case,
126 * choose a more appropriate value)
128 static void init_registers(struct tsec __iomem *regs)
131 out_be32(®s->ievent, IEVENT_INIT_CLEAR);
133 out_be32(®s->imask, IMASK_INIT_CLEAR);
135 out_be32(®s->hash.iaddr0, 0);
136 out_be32(®s->hash.iaddr1, 0);
137 out_be32(®s->hash.iaddr2, 0);
138 out_be32(®s->hash.iaddr3, 0);
139 out_be32(®s->hash.iaddr4, 0);
140 out_be32(®s->hash.iaddr5, 0);
141 out_be32(®s->hash.iaddr6, 0);
142 out_be32(®s->hash.iaddr7, 0);
144 out_be32(®s->hash.gaddr0, 0);
145 out_be32(®s->hash.gaddr1, 0);
146 out_be32(®s->hash.gaddr2, 0);
147 out_be32(®s->hash.gaddr3, 0);
148 out_be32(®s->hash.gaddr4, 0);
149 out_be32(®s->hash.gaddr5, 0);
150 out_be32(®s->hash.gaddr6, 0);
151 out_be32(®s->hash.gaddr7, 0);
153 out_be32(®s->rctrl, 0x00000000);
155 /* Init RMON mib registers */
156 memset((void *)®s->rmon, 0, sizeof(regs->rmon));
158 out_be32(®s->rmon.cam1, 0xffffffff);
159 out_be32(®s->rmon.cam2, 0xffffffff);
161 out_be32(®s->mrblr, MRBLR_INIT_SETTINGS);
163 out_be32(®s->minflr, MINFLR_INIT_SETTINGS);
165 out_be32(®s->attr, ATTR_INIT_SETTINGS);
166 out_be32(®s->attreli, ATTRELI_INIT_SETTINGS);
171 * Configure maccfg2 based on negotiated speed and duplex
172 * reported by PHY handling code
174 static void adjust_link(struct tsec_private *priv, struct phy_device *phydev)
176 struct tsec __iomem *regs = priv->regs;
180 printf("%s: No link.\n", phydev->dev->name);
184 /* clear all bits relative with interface mode */
185 ecntrl = in_be32(®s->ecntrl);
186 ecntrl &= ~ECNTRL_R100;
188 maccfg2 = in_be32(®s->maccfg2);
189 maccfg2 &= ~(MACCFG2_IF | MACCFG2_FULL_DUPLEX);
192 maccfg2 |= MACCFG2_FULL_DUPLEX;
194 switch (phydev->speed) {
196 maccfg2 |= MACCFG2_GMII;
200 maccfg2 |= MACCFG2_MII;
203 * Set R100 bit in all modes although
204 * it is only used in RGMII mode
206 if (phydev->speed == 100)
207 ecntrl |= ECNTRL_R100;
210 printf("%s: Speed was bad\n", phydev->dev->name);
214 out_be32(®s->ecntrl, ecntrl);
215 out_be32(®s->maccfg2, maccfg2);
217 printf("Speed: %d, %s duplex%s\n", phydev->speed,
218 (phydev->duplex) ? "full" : "half",
219 (phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
223 * This returns the status bits of the device. The return value
224 * is never checked, and this is what the 8260 driver did, so we
225 * do the same. Presumably, this would be zero if there were no
228 static int tsec_send(struct eth_device *dev, void *packet, int length)
230 struct tsec_private *priv = (struct tsec_private *)dev->priv;
231 struct tsec __iomem *regs = priv->regs;
236 /* Find an empty buffer descriptor */
238 in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
240 if (i >= TOUT_LOOP) {
241 debug("%s: tsec: tx buffers full\n", dev->name);
246 out_be32(&priv->txbd[priv->tx_idx].bufptr, (u32)packet);
247 out_be16(&priv->txbd[priv->tx_idx].length, length);
248 status = in_be16(&priv->txbd[priv->tx_idx].status);
249 out_be16(&priv->txbd[priv->tx_idx].status, status |
250 (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT));
252 /* Tell the DMA to go */
253 out_be32(®s->tstat, TSTAT_CLEAR_THALT);
255 /* Wait for buffer to be transmitted */
257 in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_READY;
259 if (i >= TOUT_LOOP) {
260 debug("%s: tsec: tx error\n", dev->name);
265 priv->tx_idx = (priv->tx_idx + 1) % TX_BUF_CNT;
266 result = in_be16(&priv->txbd[priv->tx_idx].status) & TXBD_STATS;
271 static int tsec_recv(struct eth_device *dev)
273 struct tsec_private *priv = (struct tsec_private *)dev->priv;
274 struct tsec __iomem *regs = priv->regs;
276 while (!(in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY)) {
277 int length = in_be16(&priv->rxbd[priv->rx_idx].length);
278 uint16_t status = in_be16(&priv->rxbd[priv->rx_idx].status);
279 uchar *packet = net_rx_packets[priv->rx_idx];
281 /* Send the packet up if there were no errors */
282 if (!(status & RXBD_STATS))
283 net_process_received_packet(packet, length - 4);
285 printf("Got error %x\n", (status & RXBD_STATS));
287 out_be16(&priv->rxbd[priv->rx_idx].length, 0);
290 /* Set the wrap bit if this is the last element in the list */
291 if ((priv->rx_idx + 1) == PKTBUFSRX)
293 out_be16(&priv->rxbd[priv->rx_idx].status, status);
295 priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;
298 if (in_be32(®s->ievent) & IEVENT_BSY) {
299 out_be32(®s->ievent, IEVENT_BSY);
300 out_be32(®s->rstat, RSTAT_CLEAR_RHALT);
306 /* Stop the interface */
307 static void tsec_halt(struct eth_device *dev)
309 struct tsec_private *priv = (struct tsec_private *)dev->priv;
310 struct tsec __iomem *regs = priv->regs;
312 clrbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
313 setbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
315 while ((in_be32(®s->ievent) & (IEVENT_GRSC | IEVENT_GTSC))
316 != (IEVENT_GRSC | IEVENT_GTSC))
319 clrbits_be32(®s->maccfg1, MACCFG1_TX_EN | MACCFG1_RX_EN);
321 /* Shut down the PHY, as needed */
322 phy_shutdown(priv->phydev);
325 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
327 * When MACCFG1[Rx_EN] is enabled during system boot as part
328 * of the eTSEC port initialization sequence,
329 * the eTSEC Rx logic may not be properly initialized.
331 void redundant_init(struct tsec_private *priv)
333 struct tsec __iomem *regs = priv->regs;
336 static const u8 pkt[] = {
337 0x00, 0x1e, 0x4f, 0x12, 0xcb, 0x2c, 0x00, 0x25,
338 0x64, 0xbb, 0xd1, 0xab, 0x08, 0x00, 0x45, 0x00,
339 0x00, 0x5c, 0xdd, 0x22, 0x00, 0x00, 0x80, 0x01,
340 0x1f, 0x71, 0x0a, 0xc1, 0x14, 0x22, 0x0a, 0xc1,
341 0x14, 0x6a, 0x08, 0x00, 0xef, 0x7e, 0x02, 0x00,
342 0x94, 0x05, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
343 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
344 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
345 0x77, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
346 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
347 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
348 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
349 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70,
352 /* Enable promiscuous mode */
353 setbits_be32(®s->rctrl, 0x8);
354 /* Enable loopback mode */
355 setbits_be32(®s->maccfg1, MACCFG1_LOOPBACK);
356 /* Enable transmit and receive */
357 setbits_be32(®s->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);
359 /* Tell the DMA it is clear to go */
360 setbits_be32(®s->dmactrl, DMACTRL_INIT_SETTINGS);
361 out_be32(®s->tstat, TSTAT_CLEAR_THALT);
362 out_be32(®s->rstat, RSTAT_CLEAR_RHALT);
363 clrbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
367 tsec_send(priv->dev, (void *)pkt, sizeof(pkt));
369 /* Wait for buffer to be received */
371 in_be16(&priv->rxbd[priv->rx_idx].status) & RXBD_EMPTY;
373 if (t >= 10 * TOUT_LOOP) {
374 printf("%s: tsec: rx error\n", priv->dev->name);
379 if (!memcmp(pkt, net_rx_packets[priv->rx_idx], sizeof(pkt)))
382 out_be16(&priv->rxbd[priv->rx_idx].length, 0);
384 if ((priv->rx_idx + 1) == PKTBUFSRX)
386 out_be16(&priv->rxbd[priv->rx_idx].status, status);
387 priv->rx_idx = (priv->rx_idx + 1) % PKTBUFSRX;
389 if (in_be32(®s->ievent) & IEVENT_BSY) {
390 out_be32(®s->ievent, IEVENT_BSY);
391 out_be32(®s->rstat, RSTAT_CLEAR_RHALT);
394 printf("loopback recv packet error!\n");
395 clrbits_be32(®s->maccfg1, MACCFG1_RX_EN);
397 setbits_be32(®s->maccfg1, MACCFG1_RX_EN);
399 } while ((count++ < 4) && (fail == 1));
402 panic("eTSEC init fail!\n");
403 /* Disable promiscuous mode */
404 clrbits_be32(®s->rctrl, 0x8);
405 /* Disable loopback mode */
406 clrbits_be32(®s->maccfg1, MACCFG1_LOOPBACK);
411 * Set up the buffers and their descriptors, and bring up the
414 static void startup_tsec(struct tsec_private *priv)
416 struct tsec __iomem *regs = priv->regs;
420 /* reset the indices to zero */
423 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
427 /* Point to the buffer descriptors */
428 out_be32(®s->tbase, (u32)&priv->txbd[0]);
429 out_be32(®s->rbase, (u32)&priv->rxbd[0]);
431 /* Initialize the Rx Buffer descriptors */
432 for (i = 0; i < PKTBUFSRX; i++) {
433 out_be16(&priv->rxbd[i].status, RXBD_EMPTY);
434 out_be16(&priv->rxbd[i].length, 0);
435 out_be32(&priv->rxbd[i].bufptr, (u32)net_rx_packets[i]);
437 status = in_be16(&priv->rxbd[PKTBUFSRX - 1].status);
438 out_be16(&priv->rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP);
440 /* Initialize the TX Buffer Descriptors */
441 for (i = 0; i < TX_BUF_CNT; i++) {
442 out_be16(&priv->txbd[i].status, 0);
443 out_be16(&priv->txbd[i].length, 0);
444 out_be32(&priv->txbd[i].bufptr, 0);
446 status = in_be16(&priv->txbd[TX_BUF_CNT - 1].status);
447 out_be16(&priv->txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP);
449 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
451 if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
452 redundant_init(priv);
454 /* Enable Transmit and Receive */
455 setbits_be32(®s->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);
457 /* Tell the DMA it is clear to go */
458 setbits_be32(®s->dmactrl, DMACTRL_INIT_SETTINGS);
459 out_be32(®s->tstat, TSTAT_CLEAR_THALT);
460 out_be32(®s->rstat, RSTAT_CLEAR_RHALT);
461 clrbits_be32(®s->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
465 * Initializes data structures and registers for the controller,
466 * and brings the interface up. Returns the link status, meaning
467 * that it returns success if the link is up, failure otherwise.
468 * This allows U-Boot to find the first active controller.
470 static int tsec_init(struct eth_device *dev, bd_t * bd)
472 struct tsec_private *priv = (struct tsec_private *)dev->priv;
473 struct tsec __iomem *regs = priv->regs;
477 /* Make sure the controller is stopped */
480 /* Init MACCFG2. Defaults to GMII */
481 out_be32(®s->maccfg2, MACCFG2_INIT_SETTINGS);
484 out_be32(®s->ecntrl, ECNTRL_INIT_SETTINGS);
487 * Copy the station address into the address registers.
488 * For a station address of 0x12345678ABCD in transmission
489 * order (BE), MACnADDR1 is set to 0xCDAB7856 and
490 * MACnADDR2 is set to 0x34120000.
492 tempval = (dev->enetaddr[5] << 24) | (dev->enetaddr[4] << 16) |
493 (dev->enetaddr[3] << 8) | dev->enetaddr[2];
495 out_be32(®s->macstnaddr1, tempval);
497 tempval = (dev->enetaddr[1] << 24) | (dev->enetaddr[0] << 16);
499 out_be32(®s->macstnaddr2, tempval);
501 /* Clear out (for the most part) the other registers */
502 init_registers(regs);
504 /* Ready the device for tx/rx */
507 /* Start up the PHY */
508 ret = phy_startup(priv->phydev);
510 printf("Could not initialize PHY %s\n",
511 priv->phydev->dev->name);
515 adjust_link(priv, priv->phydev);
517 /* If there's no link, fail */
518 return priv->phydev->link ? 0 : -1;
521 static phy_interface_t tsec_get_interface(struct tsec_private *priv)
523 struct tsec __iomem *regs = priv->regs;
526 ecntrl = in_be32(®s->ecntrl);
528 if (ecntrl & ECNTRL_SGMII_MODE)
529 return PHY_INTERFACE_MODE_SGMII;
531 if (ecntrl & ECNTRL_TBI_MODE) {
532 if (ecntrl & ECNTRL_REDUCED_MODE)
533 return PHY_INTERFACE_MODE_RTBI;
535 return PHY_INTERFACE_MODE_TBI;
538 if (ecntrl & ECNTRL_REDUCED_MODE) {
539 if (ecntrl & ECNTRL_REDUCED_MII_MODE)
540 return PHY_INTERFACE_MODE_RMII;
542 phy_interface_t interface = priv->interface;
545 * This isn't autodetected, so it must
546 * be set by the platform code.
548 if ((interface == PHY_INTERFACE_MODE_RGMII_ID) ||
549 (interface == PHY_INTERFACE_MODE_RGMII_TXID) ||
550 (interface == PHY_INTERFACE_MODE_RGMII_RXID))
553 return PHY_INTERFACE_MODE_RGMII;
557 if (priv->flags & TSEC_GIGABIT)
558 return PHY_INTERFACE_MODE_GMII;
560 return PHY_INTERFACE_MODE_MII;
564 * Discover which PHY is attached to the device, and configure it
565 * properly. If the PHY is not recognized, then return 0
566 * (failure). Otherwise, return 1
568 static int init_phy(struct tsec_private *priv)
570 struct phy_device *phydev;
571 struct tsec __iomem *regs = priv->regs;
572 u32 supported = (SUPPORTED_10baseT_Half |
573 SUPPORTED_10baseT_Full |
574 SUPPORTED_100baseT_Half |
575 SUPPORTED_100baseT_Full);
577 if (priv->flags & TSEC_GIGABIT)
578 supported |= SUPPORTED_1000baseT_Full;
580 /* Assign a Physical address to the TBI */
581 out_be32(®s->tbipa, CONFIG_SYS_TBIPA_VALUE);
583 priv->interface = tsec_get_interface(priv);
585 if (priv->interface == PHY_INTERFACE_MODE_SGMII)
586 tsec_configure_serdes(priv);
588 phydev = phy_connect(priv->bus, priv->phyaddr, priv->dev,
593 phydev->supported &= supported;
594 phydev->advertising = phydev->supported;
596 priv->phydev = phydev;
604 * Initialize device structure. Returns success if PHY
605 * initialization succeeded (i.e. if it recognizes the PHY)
607 static int tsec_initialize(bd_t *bis, struct tsec_info_struct *tsec_info)
609 struct eth_device *dev;
611 struct tsec_private *priv;
613 dev = (struct eth_device *)malloc(sizeof *dev);
618 memset(dev, 0, sizeof *dev);
620 priv = (struct tsec_private *)malloc(sizeof(*priv));
625 priv->regs = tsec_info->regs;
626 priv->phyregs_sgmii = tsec_info->miiregs_sgmii;
628 priv->phyaddr = tsec_info->phyaddr;
629 priv->flags = tsec_info->flags;
631 sprintf(dev->name, tsec_info->devname);
632 priv->interface = tsec_info->interface;
633 priv->bus = miiphy_get_dev_by_name(tsec_info->mii_devname);
637 dev->init = tsec_init;
638 dev->halt = tsec_halt;
639 dev->send = tsec_send;
640 dev->recv = tsec_recv;
641 #ifdef CONFIG_MCAST_TFTP
642 dev->mcast = tsec_mcast_addr;
645 /* Tell U-Boot to get the addr from the env */
646 for (i = 0; i < 6; i++)
647 dev->enetaddr[i] = 0;
652 setbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
653 udelay(2); /* Soft Reset must be asserted for 3 TX clocks */
654 clrbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
656 /* Try to initialize PHY here, and return */
657 return init_phy(priv);
661 * Initialize all the TSEC devices
663 * Returns the number of TSEC devices that were initialized
665 int tsec_eth_init(bd_t *bis, struct tsec_info_struct *tsecs, int num)
670 for (i = 0; i < num; i++) {
671 ret = tsec_initialize(bis, &tsecs[i]);
679 int tsec_standard_init(bd_t *bis)
681 struct fsl_pq_mdio_info info;
683 info.regs = TSEC_GET_MDIO_REGS_BASE(1);
684 info.name = DEFAULT_MII_NAME;
686 fsl_pq_mdio_init(bis, &info);
688 return tsec_eth_init(bis, tsec_info, ARRAY_SIZE(tsec_info));