xref: /rk3399_rockchip-uboot/drivers/net/xilinx_emaclite.c (revision a0b2bfb0bfb91c17038ce2555a0e1038802b997e)
1 /*
2  * (C) Copyright 2007-2009 Michal Simek
3  * (C) Copyright 2003 Xilinx Inc.
4  *
5  * Michal SIMEK <monstr@monstr.eu>
6  *
7  * SPDX-License-Identifier:	GPL-2.0+
8  */
9 
10 #include <common.h>
11 #include <net.h>
12 #include <config.h>
13 #include <console.h>
14 #include <malloc.h>
15 #include <asm/io.h>
16 #include <phy.h>
17 #include <miiphy.h>
18 #include <fdtdec.h>
19 #include <asm-generic/errno.h>
20 
21 #undef DEBUG
22 
23 #define ENET_ADDR_LENGTH	6
24 
25 /* EmacLite constants */
26 #define XEL_BUFFER_OFFSET	0x0800	/* Next buffer's offset */
27 #define XEL_TPLR_OFFSET		0x07F4	/* Tx packet length */
28 #define XEL_TSR_OFFSET		0x07FC	/* Tx status */
29 #define XEL_RSR_OFFSET		0x17FC	/* Rx status */
30 #define XEL_RXBUFF_OFFSET	0x1000	/* Receive Buffer */
31 
32 /* Xmit complete */
33 #define XEL_TSR_XMIT_BUSY_MASK		0x00000001UL
34 /* Xmit interrupt enable bit */
35 #define XEL_TSR_XMIT_IE_MASK		0x00000008UL
36 /* Buffer is active, SW bit only */
37 #define XEL_TSR_XMIT_ACTIVE_MASK	0x80000000UL
38 /* Program the MAC address */
39 #define XEL_TSR_PROGRAM_MASK		0x00000002UL
40 /* define for programming the MAC address into the EMAC Lite */
41 #define XEL_TSR_PROG_MAC_ADDR	(XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_PROGRAM_MASK)
42 
43 /* Transmit packet length upper byte */
44 #define XEL_TPLR_LENGTH_MASK_HI		0x0000FF00UL
45 /* Transmit packet length lower byte */
46 #define XEL_TPLR_LENGTH_MASK_LO		0x000000FFUL
47 
48 /* Recv complete */
49 #define XEL_RSR_RECV_DONE_MASK		0x00000001UL
50 /* Recv interrupt enable bit */
51 #define XEL_RSR_RECV_IE_MASK		0x00000008UL
52 
53 /* MDIO Address Register Bit Masks */
54 #define XEL_MDIOADDR_REGADR_MASK  0x0000001F	/* Register Address */
55 #define XEL_MDIOADDR_PHYADR_MASK  0x000003E0	/* PHY Address */
56 #define XEL_MDIOADDR_PHYADR_SHIFT 5
57 #define XEL_MDIOADDR_OP_MASK	  0x00000400	/* RD/WR Operation */
58 
59 /* MDIO Write Data Register Bit Masks */
60 #define XEL_MDIOWR_WRDATA_MASK	  0x0000FFFF	/* Data to be Written */
61 
62 /* MDIO Read Data Register Bit Masks */
63 #define XEL_MDIORD_RDDATA_MASK	  0x0000FFFF	/* Data to be Read */
64 
65 /* MDIO Control Register Bit Masks */
66 #define XEL_MDIOCTRL_MDIOSTS_MASK 0x00000001	/* MDIO Status Mask */
67 #define XEL_MDIOCTRL_MDIOEN_MASK  0x00000008	/* MDIO Enable */
68 
69 struct emaclite_regs {
70 	u32 tx_ping; /* 0x0 - TX Ping buffer */
71 	u32 reserved1[504];
72 	u32 mdioaddr; /* 0x7e4 - MDIO Address Register */
73 	u32 mdiowr; /* 0x7e8 - MDIO Write Data Register */
74 	u32 mdiord;/* 0x7ec - MDIO Read Data Register */
75 	u32 mdioctrl; /* 0x7f0 - MDIO Control Register */
76 	u32 tx_ping_tplr; /* 0x7f4 - Tx packet length */
77 	u32 global_interrupt; /* 0x7f8 - Global interrupt enable */
78 	u32 tx_ping_tsr; /* 0x7fc - Tx status */
79 	u32 tx_pong; /* 0x800 - TX Pong buffer */
80 	u32 reserved2[508];
81 	u32 tx_pong_tplr; /* 0xff4 - Tx packet length */
82 	u32 reserved3; /* 0xff8 */
83 	u32 tx_pong_tsr; /* 0xffc - Tx status */
84 	u32 rx_ping; /* 0x1000 - Receive Buffer */
85 	u32 reserved4[510];
86 	u32 rx_ping_rsr; /* 0x17fc - Rx status */
87 	u32 rx_pong; /* 0x1800 - Receive Buffer */
88 	u32 reserved5[510];
89 	u32 rx_pong_rsr; /* 0x1ffc - Rx status */
90 };
91 
92 struct xemaclite {
93 	u32 nexttxbuffertouse;	/* Next TX buffer to write to */
94 	u32 nextrxbuffertouse;	/* Next RX buffer to read from */
95 	u32 txpp;		/* TX ping pong buffer */
96 	u32 rxpp;		/* RX ping pong buffer */
97 	int phyaddr;
98 	struct emaclite_regs *regs;
99 	struct phy_device *phydev;
100 	struct mii_dev *bus;
101 };
102 
103 static u32 etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
104 
105 static void xemaclite_alignedread(u32 *srcptr, void *destptr, u32 bytecount)
106 {
107 	u32 i;
108 	u32 alignbuffer;
109 	u32 *to32ptr;
110 	u32 *from32ptr;
111 	u8 *to8ptr;
112 	u8 *from8ptr;
113 
114 	from32ptr = (u32 *) srcptr;
115 
116 	/* Word aligned buffer, no correction needed. */
117 	to32ptr = (u32 *) destptr;
118 	while (bytecount > 3) {
119 		*to32ptr++ = *from32ptr++;
120 		bytecount -= 4;
121 	}
122 	to8ptr = (u8 *) to32ptr;
123 
124 	alignbuffer = *from32ptr++;
125 	from8ptr = (u8 *) &alignbuffer;
126 
127 	for (i = 0; i < bytecount; i++)
128 		*to8ptr++ = *from8ptr++;
129 }
130 
131 static void xemaclite_alignedwrite(void *srcptr, u32 destptr, u32 bytecount)
132 {
133 	u32 i;
134 	u32 alignbuffer;
135 	u32 *to32ptr = (u32 *) destptr;
136 	u32 *from32ptr;
137 	u8 *to8ptr;
138 	u8 *from8ptr;
139 
140 	from32ptr = (u32 *) srcptr;
141 	while (bytecount > 3) {
142 
143 		*to32ptr++ = *from32ptr++;
144 		bytecount -= 4;
145 	}
146 
147 	alignbuffer = 0;
148 	to8ptr = (u8 *) &alignbuffer;
149 	from8ptr = (u8 *) from32ptr;
150 
151 	for (i = 0; i < bytecount; i++)
152 		*to8ptr++ = *from8ptr++;
153 
154 	*to32ptr++ = alignbuffer;
155 }
156 
157 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
158 static int wait_for_bit(const char *func, u32 *reg, const u32 mask,
159 			bool set, unsigned int timeout)
160 {
161 	u32 val;
162 	unsigned long start = get_timer(0);
163 
164 	while (1) {
165 		val = readl(reg);
166 
167 		if (!set)
168 			val = ~val;
169 
170 		if ((val & mask) == mask)
171 			return 0;
172 
173 		if (get_timer(start) > timeout)
174 			break;
175 
176 		if (ctrlc()) {
177 			puts("Abort\n");
178 			return -EINTR;
179 		}
180 
181 		udelay(1);
182 	}
183 
184 	debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
185 	      func, reg, mask, set);
186 
187 	return -ETIMEDOUT;
188 }
189 
190 static int mdio_wait(struct emaclite_regs *regs)
191 {
192 	return wait_for_bit(__func__, &regs->mdioctrl,
193 			    XEL_MDIOCTRL_MDIOSTS_MASK, false, 2000);
194 }
195 
196 static u32 phyread(struct xemaclite *emaclite, u32 phyaddress, u32 registernum,
197 		   u16 *data)
198 {
199 	struct emaclite_regs *regs = emaclite->regs;
200 
201 	if (mdio_wait(regs))
202 		return 1;
203 
204 	u32 ctrl_reg = in_be32(&regs->mdioctrl);
205 	out_be32(&regs->mdioaddr, XEL_MDIOADDR_OP_MASK |
206 		 ((phyaddress << XEL_MDIOADDR_PHYADR_SHIFT) | registernum));
207 	out_be32(&regs->mdioctrl, ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK);
208 
209 	if (mdio_wait(regs))
210 		return 1;
211 
212 	/* Read data */
213 	*data = in_be32(&regs->mdiord);
214 	return 0;
215 }
216 
217 static u32 phywrite(struct xemaclite *emaclite, u32 phyaddress, u32 registernum,
218 		    u16 data)
219 {
220 	struct emaclite_regs *regs = emaclite->regs;
221 
222 	if (mdio_wait(regs))
223 		return 1;
224 
225 	/*
226 	 * Write the PHY address, register number and clear the OP bit in the
227 	 * MDIO Address register and then write the value into the MDIO Write
228 	 * Data register. Finally, set the Status bit in the MDIO Control
229 	 * register to start a MDIO write transaction.
230 	 */
231 	u32 ctrl_reg = in_be32(&regs->mdioctrl);
232 	out_be32(&regs->mdioaddr, ~XEL_MDIOADDR_OP_MASK &
233 		 ((phyaddress << XEL_MDIOADDR_PHYADR_SHIFT) | registernum));
234 	out_be32(&regs->mdiowr, data);
235 	out_be32(&regs->mdioctrl, ctrl_reg | XEL_MDIOCTRL_MDIOSTS_MASK);
236 
237 	if (mdio_wait(regs))
238 		return 1;
239 
240 	return 0;
241 }
242 #endif
243 
244 static void emaclite_halt(struct eth_device *dev)
245 {
246 	debug("eth_halt\n");
247 }
248 
249 /* Use MII register 1 (MII status register) to detect PHY */
250 #define PHY_DETECT_REG  1
251 
252 /* Mask used to verify certain PHY features (or register contents)
253  * in the register above:
254  *  0x1000: 10Mbps full duplex support
255  *  0x0800: 10Mbps half duplex support
256  *  0x0008: Auto-negotiation support
257  */
258 #define PHY_DETECT_MASK 0x1808
259 
260 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
261 static int setup_phy(struct eth_device *dev)
262 {
263 	int i;
264 	u16 phyreg;
265 	struct xemaclite *emaclite = dev->priv;
266 	struct phy_device *phydev;
267 
268 	u32 supported = SUPPORTED_10baseT_Half |
269 			SUPPORTED_10baseT_Full |
270 			SUPPORTED_100baseT_Half |
271 			SUPPORTED_100baseT_Full;
272 
273 	if (emaclite->phyaddr != -1) {
274 		phyread(emaclite, emaclite->phyaddr, PHY_DETECT_REG, &phyreg);
275 		if ((phyreg != 0xFFFF) &&
276 		    ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
277 			/* Found a valid PHY address */
278 			debug("Default phy address %d is valid\n",
279 			      emaclite->phyaddr);
280 		} else {
281 			debug("PHY address is not setup correctly %d\n",
282 			      emaclite->phyaddr);
283 			emaclite->phyaddr = -1;
284 		}
285 	}
286 
287 	if (emaclite->phyaddr == -1) {
288 		/* detect the PHY address */
289 		for (i = 31; i >= 0; i--) {
290 			phyread(emaclite, i, PHY_DETECT_REG, &phyreg);
291 			if ((phyreg != 0xFFFF) &&
292 			    ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
293 				/* Found a valid PHY address */
294 				emaclite->phyaddr = i;
295 				debug("emaclite: Found valid phy address, %d\n",
296 				      i);
297 				break;
298 			}
299 		}
300 	}
301 
302 	/* interface - look at tsec */
303 	phydev = phy_connect(emaclite->bus, emaclite->phyaddr, dev,
304 			     PHY_INTERFACE_MODE_MII);
305 	/*
306 	 * Phy can support 1000baseT but device NOT that's why phydev->supported
307 	 * must be setup for 1000baseT. phydev->advertising setups what speeds
308 	 * will be used for autonegotiation where 1000baseT must be disabled.
309 	 */
310 	phydev->supported = supported | SUPPORTED_1000baseT_Half |
311 						SUPPORTED_1000baseT_Full;
312 	phydev->advertising = supported;
313 	emaclite->phydev = phydev;
314 	phy_config(phydev);
315 	phy_startup(phydev);
316 
317 	if (!phydev->link) {
318 		printf("%s: No link.\n", phydev->dev->name);
319 		return 0;
320 	}
321 
322 	/* Do not setup anything */
323 	return 1;
324 }
325 #endif
326 
327 static int emaclite_init(struct eth_device *dev, bd_t *bis)
328 {
329 	struct xemaclite *emaclite = dev->priv;
330 	struct emaclite_regs *regs = emaclite->regs;
331 
332 	debug("EmacLite Initialization Started\n");
333 
334 /*
335  * TX - TX_PING & TX_PONG initialization
336  */
337 	/* Restart PING TX */
338 	out_be32(&regs->tx_ping_tsr, 0);
339 	/* Copy MAC address */
340 	xemaclite_alignedwrite(dev->enetaddr, (u32)&regs->tx_ping,
341 			       ENET_ADDR_LENGTH);
342 	/* Set the length */
343 	out_be32(&regs->tx_ping_tplr, ENET_ADDR_LENGTH);
344 	/* Update the MAC address in the EMAC Lite */
345 	out_be32(&regs->tx_ping_tsr, XEL_TSR_PROG_MAC_ADDR);
346 	/* Wait for EMAC Lite to finish with the MAC address update */
347 	while ((in_be32 (&regs->tx_ping_tsr) &
348 		XEL_TSR_PROG_MAC_ADDR) != 0)
349 		;
350 
351 	if (emaclite->txpp) {
352 		/* The same operation with PONG TX */
353 		out_be32(&regs->tx_pong_tsr, 0);
354 		xemaclite_alignedwrite(dev->enetaddr, (u32)&regs->tx_pong,
355 				       ENET_ADDR_LENGTH);
356 		out_be32(&regs->tx_pong_tplr, ENET_ADDR_LENGTH);
357 		out_be32(&regs->tx_pong_tsr, XEL_TSR_PROG_MAC_ADDR);
358 		while ((in_be32(&regs->tx_pong_tsr) &
359 		       XEL_TSR_PROG_MAC_ADDR) != 0)
360 			;
361 	}
362 
363 /*
364  * RX - RX_PING & RX_PONG initialization
365  */
366 	/* Write out the value to flush the RX buffer */
367 	out_be32 (dev->iobase + XEL_RSR_OFFSET, XEL_RSR_RECV_IE_MASK);
368 
369 	if (emaclite->rxpp)
370 		out_be32 (dev->iobase + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
371 			XEL_RSR_RECV_IE_MASK);
372 
373 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
374 	out_be32(&regs->mdioctrl, XEL_MDIOCTRL_MDIOEN_MASK);
375 	if (in_be32(&regs->mdioctrl) & XEL_MDIOCTRL_MDIOEN_MASK)
376 		if (!setup_phy(dev))
377 			return -1;
378 #endif
379 	debug("EmacLite Initialization complete\n");
380 	return 0;
381 }
382 
383 static int xemaclite_txbufferavailable(struct eth_device *dev)
384 {
385 	u32 reg;
386 	u32 txpingbusy;
387 	u32 txpongbusy;
388 	struct xemaclite *emaclite = dev->priv;
389 
390 	/*
391 	 * Read the other buffer register
392 	 * and determine if the other buffer is available
393 	 */
394 	reg = in_be32 (dev->iobase +
395 			emaclite->nexttxbuffertouse + 0);
396 	txpingbusy = ((reg & XEL_TSR_XMIT_BUSY_MASK) ==
397 			XEL_TSR_XMIT_BUSY_MASK);
398 
399 	reg = in_be32 (dev->iobase +
400 			(emaclite->nexttxbuffertouse ^ XEL_TSR_OFFSET) + 0);
401 	txpongbusy = ((reg & XEL_TSR_XMIT_BUSY_MASK) ==
402 			XEL_TSR_XMIT_BUSY_MASK);
403 
404 	return !(txpingbusy && txpongbusy);
405 }
406 
407 static int emaclite_send(struct eth_device *dev, void *ptr, int len)
408 {
409 	u32 reg;
410 	u32 baseaddress;
411 	struct xemaclite *emaclite = dev->priv;
412 
413 	u32 maxtry = 1000;
414 
415 	if (len > PKTSIZE)
416 		len = PKTSIZE;
417 
418 	while (!xemaclite_txbufferavailable(dev) && maxtry) {
419 		udelay(10);
420 		maxtry--;
421 	}
422 
423 	if (!maxtry) {
424 		printf("Error: Timeout waiting for ethernet TX buffer\n");
425 		/* Restart PING TX */
426 		out_be32 (dev->iobase + XEL_TSR_OFFSET, 0);
427 		if (emaclite->txpp) {
428 			out_be32 (dev->iobase + XEL_TSR_OFFSET +
429 				XEL_BUFFER_OFFSET, 0);
430 		}
431 		return -1;
432 	}
433 
434 	/* Determine the expected TX buffer address */
435 	baseaddress = (dev->iobase + emaclite->nexttxbuffertouse);
436 
437 	/* Determine if the expected buffer address is empty */
438 	reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
439 	if (((reg & XEL_TSR_XMIT_BUSY_MASK) == 0)
440 		&& ((in_be32 ((baseaddress) + XEL_TSR_OFFSET)
441 			& XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
442 
443 		if (emaclite->txpp)
444 			emaclite->nexttxbuffertouse ^= XEL_BUFFER_OFFSET;
445 
446 		debug("Send packet from 0x%x\n", baseaddress);
447 		/* Write the frame to the buffer */
448 		xemaclite_alignedwrite(ptr, baseaddress, len);
449 		out_be32 (baseaddress + XEL_TPLR_OFFSET,(len &
450 			(XEL_TPLR_LENGTH_MASK_HI | XEL_TPLR_LENGTH_MASK_LO)));
451 		reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
452 		reg |= XEL_TSR_XMIT_BUSY_MASK;
453 		if ((reg & XEL_TSR_XMIT_IE_MASK) != 0)
454 			reg |= XEL_TSR_XMIT_ACTIVE_MASK;
455 		out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
456 		return 0;
457 	}
458 
459 	if (emaclite->txpp) {
460 		/* Switch to second buffer */
461 		baseaddress ^= XEL_BUFFER_OFFSET;
462 		/* Determine if the expected buffer address is empty */
463 		reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
464 		if (((reg & XEL_TSR_XMIT_BUSY_MASK) == 0)
465 			&& ((in_be32 ((baseaddress) + XEL_TSR_OFFSET)
466 				& XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
467 			debug("Send packet from 0x%x\n", baseaddress);
468 			/* Write the frame to the buffer */
469 			xemaclite_alignedwrite(ptr, baseaddress, len);
470 			out_be32 (baseaddress + XEL_TPLR_OFFSET, (len &
471 				(XEL_TPLR_LENGTH_MASK_HI |
472 					XEL_TPLR_LENGTH_MASK_LO)));
473 			reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
474 			reg |= XEL_TSR_XMIT_BUSY_MASK;
475 			if ((reg & XEL_TSR_XMIT_IE_MASK) != 0)
476 				reg |= XEL_TSR_XMIT_ACTIVE_MASK;
477 			out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
478 			return 0;
479 		}
480 	}
481 
482 	puts("Error while sending frame\n");
483 	return -1;
484 }
485 
486 static int emaclite_recv(struct eth_device *dev)
487 {
488 	u32 length;
489 	u32 reg;
490 	u32 baseaddress;
491 	struct xemaclite *emaclite = dev->priv;
492 
493 	baseaddress = dev->iobase + emaclite->nextrxbuffertouse;
494 	reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
495 	debug("Testing data at address 0x%x\n", baseaddress);
496 	if ((reg & XEL_RSR_RECV_DONE_MASK) == XEL_RSR_RECV_DONE_MASK) {
497 		if (emaclite->rxpp)
498 			emaclite->nextrxbuffertouse ^= XEL_BUFFER_OFFSET;
499 	} else {
500 
501 		if (!emaclite->rxpp) {
502 			debug("No data was available - address 0x%x\n",
503 								baseaddress);
504 			return 0;
505 		} else {
506 			baseaddress ^= XEL_BUFFER_OFFSET;
507 			reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
508 			if ((reg & XEL_RSR_RECV_DONE_MASK) !=
509 						XEL_RSR_RECV_DONE_MASK) {
510 				debug("No data was available - address 0x%x\n",
511 						baseaddress);
512 				return 0;
513 			}
514 		}
515 	}
516 	/* Get the length of the frame that arrived */
517 	switch(((ntohl(in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0xC))) &
518 			0xFFFF0000 ) >> 16) {
519 		case 0x806:
520 			length = 42 + 20; /* FIXME size of ARP */
521 			debug("ARP Packet\n");
522 			break;
523 		case 0x800:
524 			length = 14 + 14 +
525 			(((ntohl(in_be32 (baseaddress + XEL_RXBUFF_OFFSET +
526 						0x10))) & 0xFFFF0000) >> 16);
527 			/* FIXME size of IP packet */
528 			debug ("IP Packet\n");
529 			break;
530 		default:
531 			debug("Other Packet\n");
532 			length = PKTSIZE;
533 			break;
534 	}
535 
536 	xemaclite_alignedread((u32 *) (baseaddress + XEL_RXBUFF_OFFSET),
537 			etherrxbuff, length);
538 
539 	/* Acknowledge the frame */
540 	reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
541 	reg &= ~XEL_RSR_RECV_DONE_MASK;
542 	out_be32 (baseaddress + XEL_RSR_OFFSET, reg);
543 
544 	debug("Packet receive from 0x%x, length %dB\n", baseaddress, length);
545 	net_process_received_packet((uchar *)etherrxbuff, length);
546 	return length;
547 
548 }
549 
550 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
551 static int emaclite_miiphy_read(const char *devname, uchar addr,
552 				uchar reg, ushort *val)
553 {
554 	u32 ret;
555 	struct eth_device *dev = eth_get_dev();
556 
557 	ret = phyread(dev->priv, addr, reg, val);
558 	debug("emaclite: Read MII 0x%x, 0x%x, 0x%x\n", addr, reg, *val);
559 	return ret;
560 }
561 
562 static int emaclite_miiphy_write(const char *devname, uchar addr,
563 				 uchar reg, ushort val)
564 {
565 	struct eth_device *dev = eth_get_dev();
566 
567 	debug("emaclite: Write MII 0x%x, 0x%x, 0x%x\n", addr, reg, val);
568 	return phywrite(dev->priv, addr, reg, val);
569 }
570 #endif
571 
572 int xilinx_emaclite_initialize(bd_t *bis, unsigned long base_addr,
573 							int txpp, int rxpp)
574 {
575 	struct eth_device *dev;
576 	struct xemaclite *emaclite;
577 	struct emaclite_regs *regs;
578 
579 	dev = calloc(1, sizeof(*dev));
580 	if (dev == NULL)
581 		return -1;
582 
583 	emaclite = calloc(1, sizeof(struct xemaclite));
584 	if (emaclite == NULL) {
585 		free(dev);
586 		return -1;
587 	}
588 
589 	dev->priv = emaclite;
590 
591 	emaclite->txpp = txpp;
592 	emaclite->rxpp = rxpp;
593 
594 	sprintf(dev->name, "Xelite.%lx", base_addr);
595 
596 	emaclite->regs = (struct emaclite_regs *)base_addr;
597 	regs = emaclite->regs;
598 	dev->iobase = base_addr;
599 	dev->init = emaclite_init;
600 	dev->halt = emaclite_halt;
601 	dev->send = emaclite_send;
602 	dev->recv = emaclite_recv;
603 
604 #ifdef CONFIG_PHY_ADDR
605 	emaclite->phyaddr = CONFIG_PHY_ADDR;
606 #else
607 	emaclite->phyaddr = -1;
608 #endif
609 
610 	eth_register(dev);
611 
612 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
613 	miiphy_register(dev->name, emaclite_miiphy_read, emaclite_miiphy_write);
614 	emaclite->bus = miiphy_get_dev_by_name(dev->name);
615 
616 	out_be32(&regs->mdioctrl, XEL_MDIOCTRL_MDIOEN_MASK);
617 #endif
618 
619 	return 1;
620 }
621