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1 /*
2  * Altera 10/100/1000 triple speed ethernet mac driver
3  *
4  * Copyright (C) 2008 Altera Corporation.
5  * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 #include <common.h>
12 #include <cpu_func.h>
13 #include <dm.h>
14 #include <errno.h>
15 #include <fdt_support.h>
16 #include <memalign.h>
17 #include <miiphy.h>
18 #include <net.h>
19 #include <asm/cache.h>
20 #include <asm/dma-mapping.h>
21 #include <asm/io.h>
22 #include "altera_tse.h"
23 
24 DECLARE_GLOBAL_DATA_PTR;
25 
alt_sgdma_construct_descriptor(struct alt_sgdma_descriptor * desc,struct alt_sgdma_descriptor * next,void * read_addr,void * write_addr,u16 length_or_eop,int generate_eop,int read_fixed,int write_fixed_or_sop)26 static inline void alt_sgdma_construct_descriptor(
27 	struct alt_sgdma_descriptor *desc,
28 	struct alt_sgdma_descriptor *next,
29 	void *read_addr,
30 	void *write_addr,
31 	u16 length_or_eop,
32 	int generate_eop,
33 	int read_fixed,
34 	int write_fixed_or_sop)
35 {
36 	u8 val;
37 
38 	/*
39 	 * Mark the "next" descriptor as "not" owned by hardware. This prevents
40 	 * The SGDMA controller from continuing to process the chain.
41 	 */
42 	next->descriptor_control = next->descriptor_control &
43 		~ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK;
44 
45 	memset(desc, 0, sizeof(struct alt_sgdma_descriptor));
46 	desc->source = virt_to_phys(read_addr);
47 	desc->destination = virt_to_phys(write_addr);
48 	desc->next = virt_to_phys(next);
49 	desc->bytes_to_transfer = length_or_eop;
50 
51 	/*
52 	 * Set the descriptor control block as follows:
53 	 * - Set "owned by hardware" bit
54 	 * - Optionally set "generate EOP" bit
55 	 * - Optionally set the "read from fixed address" bit
56 	 * - Optionally set the "write to fixed address bit (which serves
57 	 *   serves as a "generate SOP" control bit in memory-to-stream mode).
58 	 * - Set the 4-bit atlantic channel, if specified
59 	 *
60 	 * Note this step is performed after all other descriptor information
61 	 * has been filled out so that, if the controller already happens to be
62 	 * pointing at this descriptor, it will not run (via the "owned by
63 	 * hardware" bit) until all other descriptor has been set up.
64 	 */
65 	val = ALT_SGDMA_DESCRIPTOR_CONTROL_OWNED_BY_HW_MSK;
66 	if (generate_eop)
67 		val |= ALT_SGDMA_DESCRIPTOR_CONTROL_GENERATE_EOP_MSK;
68 	if (read_fixed)
69 		val |= ALT_SGDMA_DESCRIPTOR_CONTROL_READ_FIXED_ADDRESS_MSK;
70 	if (write_fixed_or_sop)
71 		val |= ALT_SGDMA_DESCRIPTOR_CONTROL_WRITE_FIXED_ADDRESS_MSK;
72 	desc->descriptor_control = val;
73 }
74 
alt_sgdma_wait_transfer(struct alt_sgdma_registers * regs)75 static int alt_sgdma_wait_transfer(struct alt_sgdma_registers *regs)
76 {
77 	int status;
78 	ulong ctime;
79 
80 	/* Wait for the descriptor (chain) to complete */
81 	ctime = get_timer(0);
82 	while (1) {
83 		status = readl(&regs->status);
84 		if (!(status & ALT_SGDMA_STATUS_BUSY_MSK))
85 			break;
86 		if (get_timer(ctime) > ALT_TSE_SGDMA_BUSY_TIMEOUT) {
87 			status = -ETIMEDOUT;
88 			debug("sgdma timeout\n");
89 			break;
90 		}
91 	}
92 
93 	/* Clear Run */
94 	writel(0, &regs->control);
95 	/* Clear status */
96 	writel(0xff, &regs->status);
97 
98 	return status;
99 }
100 
alt_sgdma_start_transfer(struct alt_sgdma_registers * regs,struct alt_sgdma_descriptor * desc)101 static int alt_sgdma_start_transfer(struct alt_sgdma_registers *regs,
102 				    struct alt_sgdma_descriptor *desc)
103 {
104 	u32 val;
105 
106 	/* Point the controller at the descriptor */
107 	writel(virt_to_phys(desc), &regs->next_descriptor_pointer);
108 
109 	/*
110 	 * Set up SGDMA controller to:
111 	 * - Disable interrupt generation
112 	 * - Run once a valid descriptor is written to controller
113 	 * - Stop on an error with any particular descriptor
114 	 */
115 	val = ALT_SGDMA_CONTROL_RUN_MSK | ALT_SGDMA_CONTROL_STOP_DMA_ER_MSK;
116 	writel(val, &regs->control);
117 
118 	return 0;
119 }
120 
tse_adjust_link(struct altera_tse_priv * priv,struct phy_device * phydev)121 static void tse_adjust_link(struct altera_tse_priv *priv,
122 			    struct phy_device *phydev)
123 {
124 	struct alt_tse_mac *mac_dev = priv->mac_dev;
125 	u32 refvar;
126 
127 	if (!phydev->link) {
128 		debug("%s: No link.\n", phydev->dev->name);
129 		return;
130 	}
131 
132 	refvar = readl(&mac_dev->command_config);
133 
134 	if (phydev->duplex)
135 		refvar |= ALTERA_TSE_CMD_HD_ENA_MSK;
136 	else
137 		refvar &= ~ALTERA_TSE_CMD_HD_ENA_MSK;
138 
139 	switch (phydev->speed) {
140 	case 1000:
141 		refvar |= ALTERA_TSE_CMD_ETH_SPEED_MSK;
142 		refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
143 		break;
144 	case 100:
145 		refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
146 		refvar &= ~ALTERA_TSE_CMD_ENA_10_MSK;
147 		break;
148 	case 10:
149 		refvar &= ~ALTERA_TSE_CMD_ETH_SPEED_MSK;
150 		refvar |= ALTERA_TSE_CMD_ENA_10_MSK;
151 		break;
152 	}
153 	writel(refvar, &mac_dev->command_config);
154 }
155 
altera_tse_send_sgdma(struct udevice * dev,void * packet,int length)156 static int altera_tse_send_sgdma(struct udevice *dev, void *packet, int length)
157 {
158 	struct altera_tse_priv *priv = dev_get_priv(dev);
159 	struct alt_sgdma_descriptor *tx_desc = priv->tx_desc;
160 
161 	alt_sgdma_construct_descriptor(
162 		tx_desc,
163 		tx_desc + 1,
164 		packet,	/* read addr */
165 		NULL,	/* write addr */
166 		length,	/* length or EOP ,will change for each tx */
167 		1,	/* gen eop */
168 		0,	/* read fixed */
169 		1	/* write fixed or sop */
170 		);
171 
172 	/* send the packet */
173 	alt_sgdma_start_transfer(priv->sgdma_tx, tx_desc);
174 	alt_sgdma_wait_transfer(priv->sgdma_tx);
175 	debug("sent %d bytes\n", tx_desc->actual_bytes_transferred);
176 
177 	return tx_desc->actual_bytes_transferred;
178 }
179 
altera_tse_recv_sgdma(struct udevice * dev,int flags,uchar ** packetp)180 static int altera_tse_recv_sgdma(struct udevice *dev, int flags,
181 				 uchar **packetp)
182 {
183 	struct altera_tse_priv *priv = dev_get_priv(dev);
184 	struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
185 	int packet_length;
186 
187 	if (rx_desc->descriptor_status &
188 	    ALT_SGDMA_DESCRIPTOR_STATUS_TERMINATED_BY_EOP_MSK) {
189 		alt_sgdma_wait_transfer(priv->sgdma_rx);
190 		packet_length = rx_desc->actual_bytes_transferred;
191 		debug("recv %d bytes\n", packet_length);
192 		*packetp = priv->rx_buf;
193 
194 		return packet_length;
195 	}
196 
197 	return -EAGAIN;
198 }
199 
altera_tse_free_pkt_sgdma(struct udevice * dev,uchar * packet,int length)200 static int altera_tse_free_pkt_sgdma(struct udevice *dev, uchar *packet,
201 				     int length)
202 {
203 	struct altera_tse_priv *priv = dev_get_priv(dev);
204 	struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
205 
206 	alt_sgdma_construct_descriptor(
207 		rx_desc,
208 		rx_desc + 1,
209 		NULL,	/* read addr */
210 		priv->rx_buf, /* write addr */
211 		0,	/* length or EOP */
212 		0,	/* gen eop */
213 		0,	/* read fixed */
214 		0	/* write fixed or sop */
215 		);
216 
217 	/* setup the sgdma */
218 	alt_sgdma_start_transfer(priv->sgdma_rx, rx_desc);
219 	debug("recv setup\n");
220 
221 	return 0;
222 }
223 
altera_tse_stop_mac(struct altera_tse_priv * priv)224 static void altera_tse_stop_mac(struct altera_tse_priv *priv)
225 {
226 	struct alt_tse_mac *mac_dev = priv->mac_dev;
227 	u32 status;
228 	ulong ctime;
229 
230 	/* reset the mac */
231 	writel(ALTERA_TSE_CMD_SW_RESET_MSK, &mac_dev->command_config);
232 	ctime = get_timer(0);
233 	while (1) {
234 		status = readl(&mac_dev->command_config);
235 		if (!(status & ALTERA_TSE_CMD_SW_RESET_MSK))
236 			break;
237 		if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
238 			debug("Reset mac timeout\n");
239 			break;
240 		}
241 	}
242 }
243 
altera_tse_stop_sgdma(struct udevice * dev)244 static void altera_tse_stop_sgdma(struct udevice *dev)
245 {
246 	struct altera_tse_priv *priv = dev_get_priv(dev);
247 	struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
248 	struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
249 	struct alt_sgdma_descriptor *rx_desc = priv->rx_desc;
250 	int ret;
251 
252 	/* clear rx desc & wait for sgdma to complete */
253 	rx_desc->descriptor_control = 0;
254 	writel(0, &rx_sgdma->control);
255 	ret = alt_sgdma_wait_transfer(rx_sgdma);
256 	if (ret == -ETIMEDOUT)
257 		writel(ALT_SGDMA_CONTROL_SOFTWARERESET_MSK,
258 		       &rx_sgdma->control);
259 
260 	writel(0, &tx_sgdma->control);
261 	ret = alt_sgdma_wait_transfer(tx_sgdma);
262 	if (ret == -ETIMEDOUT)
263 		writel(ALT_SGDMA_CONTROL_SOFTWARERESET_MSK,
264 		       &tx_sgdma->control);
265 }
266 
msgdma_reset(struct msgdma_csr * csr)267 static void msgdma_reset(struct msgdma_csr *csr)
268 {
269 	u32 status;
270 	ulong ctime;
271 
272 	/* Reset mSGDMA */
273 	writel(MSGDMA_CSR_STAT_MASK, &csr->status);
274 	writel(MSGDMA_CSR_CTL_RESET, &csr->control);
275 	ctime = get_timer(0);
276 	while (1) {
277 		status = readl(&csr->status);
278 		if (!(status & MSGDMA_CSR_STAT_RESETTING))
279 			break;
280 		if (get_timer(ctime) > ALT_TSE_SW_RESET_TIMEOUT) {
281 			debug("Reset msgdma timeout\n");
282 			break;
283 		}
284 	}
285 	/* Clear status */
286 	writel(MSGDMA_CSR_STAT_MASK, &csr->status);
287 }
288 
msgdma_wait(struct msgdma_csr * csr)289 static u32 msgdma_wait(struct msgdma_csr *csr)
290 {
291 	u32 status;
292 	ulong ctime;
293 
294 	/* Wait for the descriptor to complete */
295 	ctime = get_timer(0);
296 	while (1) {
297 		status = readl(&csr->status);
298 		if (!(status & MSGDMA_CSR_STAT_BUSY))
299 			break;
300 		if (get_timer(ctime) > ALT_TSE_SGDMA_BUSY_TIMEOUT) {
301 			debug("sgdma timeout\n");
302 			break;
303 		}
304 	}
305 	/* Clear status */
306 	writel(MSGDMA_CSR_STAT_MASK, &csr->status);
307 
308 	return status;
309 }
310 
altera_tse_send_msgdma(struct udevice * dev,void * packet,int length)311 static int altera_tse_send_msgdma(struct udevice *dev, void *packet,
312 				  int length)
313 {
314 	struct altera_tse_priv *priv = dev_get_priv(dev);
315 	struct msgdma_extended_desc *desc = priv->tx_desc;
316 	u32 tx_buf = virt_to_phys(packet);
317 	u32 status;
318 
319 	writel(tx_buf, &desc->read_addr_lo);
320 	writel(0, &desc->read_addr_hi);
321 	writel(0, &desc->write_addr_lo);
322 	writel(0, &desc->write_addr_hi);
323 	writel(length, &desc->len);
324 	writel(0, &desc->burst_seq_num);
325 	writel(MSGDMA_DESC_TX_STRIDE, &desc->stride);
326 	writel(MSGDMA_DESC_CTL_TX_SINGLE, &desc->control);
327 	status = msgdma_wait(priv->sgdma_tx);
328 	debug("sent %d bytes, status %08x\n", length, status);
329 
330 	return 0;
331 }
332 
altera_tse_recv_msgdma(struct udevice * dev,int flags,uchar ** packetp)333 static int altera_tse_recv_msgdma(struct udevice *dev, int flags,
334 				  uchar **packetp)
335 {
336 	struct altera_tse_priv *priv = dev_get_priv(dev);
337 	struct msgdma_csr *csr = priv->sgdma_rx;
338 	struct msgdma_response *resp = priv->rx_resp;
339 	u32 level, length, status;
340 
341 	level = readl(&csr->resp_fill_level);
342 	if (level & 0xffff) {
343 		length = readl(&resp->bytes_transferred);
344 		status = readl(&resp->status);
345 		debug("recv %d bytes, status %08x\n", length, status);
346 		*packetp = priv->rx_buf;
347 
348 		return length;
349 	}
350 
351 	return -EAGAIN;
352 }
353 
altera_tse_free_pkt_msgdma(struct udevice * dev,uchar * packet,int length)354 static int altera_tse_free_pkt_msgdma(struct udevice *dev, uchar *packet,
355 				      int length)
356 {
357 	struct altera_tse_priv *priv = dev_get_priv(dev);
358 	struct msgdma_extended_desc *desc = priv->rx_desc;
359 	u32 rx_buf = virt_to_phys(priv->rx_buf);
360 
361 	writel(0, &desc->read_addr_lo);
362 	writel(0, &desc->read_addr_hi);
363 	writel(rx_buf, &desc->write_addr_lo);
364 	writel(0, &desc->write_addr_hi);
365 	writel(PKTSIZE_ALIGN, &desc->len);
366 	writel(0, &desc->burst_seq_num);
367 	writel(MSGDMA_DESC_RX_STRIDE, &desc->stride);
368 	writel(MSGDMA_DESC_CTL_RX_SINGLE, &desc->control);
369 	debug("recv setup\n");
370 
371 	return 0;
372 }
373 
altera_tse_stop_msgdma(struct udevice * dev)374 static void altera_tse_stop_msgdma(struct udevice *dev)
375 {
376 	struct altera_tse_priv *priv = dev_get_priv(dev);
377 
378 	msgdma_reset(priv->sgdma_rx);
379 	msgdma_reset(priv->sgdma_tx);
380 }
381 
tse_mdio_read(struct mii_dev * bus,int addr,int devad,int reg)382 static int tse_mdio_read(struct mii_dev *bus, int addr, int devad, int reg)
383 {
384 	struct altera_tse_priv *priv = bus->priv;
385 	struct alt_tse_mac *mac_dev = priv->mac_dev;
386 	u32 value;
387 
388 	/* set mdio address */
389 	writel(addr, &mac_dev->mdio_phy1_addr);
390 	/* get the data */
391 	value = readl(&mac_dev->mdio_phy1[reg]);
392 
393 	return value & 0xffff;
394 }
395 
tse_mdio_write(struct mii_dev * bus,int addr,int devad,int reg,u16 val)396 static int tse_mdio_write(struct mii_dev *bus, int addr, int devad, int reg,
397 			  u16 val)
398 {
399 	struct altera_tse_priv *priv = bus->priv;
400 	struct alt_tse_mac *mac_dev = priv->mac_dev;
401 
402 	/* set mdio address */
403 	writel(addr, &mac_dev->mdio_phy1_addr);
404 	/* set the data */
405 	writel(val, &mac_dev->mdio_phy1[reg]);
406 
407 	return 0;
408 }
409 
tse_mdio_init(const char * name,struct altera_tse_priv * priv)410 static int tse_mdio_init(const char *name, struct altera_tse_priv *priv)
411 {
412 	struct mii_dev *bus = mdio_alloc();
413 
414 	if (!bus) {
415 		printf("Failed to allocate MDIO bus\n");
416 		return -ENOMEM;
417 	}
418 
419 	bus->read = tse_mdio_read;
420 	bus->write = tse_mdio_write;
421 	snprintf(bus->name, sizeof(bus->name), "%s", name);
422 
423 	bus->priv = (void *)priv;
424 
425 	return mdio_register(bus);
426 }
427 
tse_phy_init(struct altera_tse_priv * priv,void * dev)428 static int tse_phy_init(struct altera_tse_priv *priv, void *dev)
429 {
430 	struct phy_device *phydev;
431 	unsigned int mask = 0xffffffff;
432 
433 	if (priv->phyaddr)
434 		mask = 1 << priv->phyaddr;
435 
436 	phydev = phy_find_by_mask(priv->bus, mask, priv->interface);
437 	if (!phydev)
438 		return -ENODEV;
439 
440 	phy_connect_dev(phydev, dev);
441 
442 	phydev->supported &= PHY_GBIT_FEATURES;
443 	phydev->advertising = phydev->supported;
444 
445 	priv->phydev = phydev;
446 	phy_config(phydev);
447 
448 	return 0;
449 }
450 
altera_tse_write_hwaddr(struct udevice * dev)451 static int altera_tse_write_hwaddr(struct udevice *dev)
452 {
453 	struct altera_tse_priv *priv = dev_get_priv(dev);
454 	struct alt_tse_mac *mac_dev = priv->mac_dev;
455 	struct eth_pdata *pdata = dev_get_platdata(dev);
456 	u8 *hwaddr = pdata->enetaddr;
457 	u32 mac_lo, mac_hi;
458 
459 	mac_lo = (hwaddr[3] << 24) | (hwaddr[2] << 16) |
460 		(hwaddr[1] << 8) | hwaddr[0];
461 	mac_hi = (hwaddr[5] << 8) | hwaddr[4];
462 	debug("Set MAC address to 0x%04x%08x\n", mac_hi, mac_lo);
463 
464 	writel(mac_lo, &mac_dev->mac_addr_0);
465 	writel(mac_hi, &mac_dev->mac_addr_1);
466 	writel(mac_lo, &mac_dev->supp_mac_addr_0_0);
467 	writel(mac_hi, &mac_dev->supp_mac_addr_0_1);
468 	writel(mac_lo, &mac_dev->supp_mac_addr_1_0);
469 	writel(mac_hi, &mac_dev->supp_mac_addr_1_1);
470 	writel(mac_lo, &mac_dev->supp_mac_addr_2_0);
471 	writel(mac_hi, &mac_dev->supp_mac_addr_2_1);
472 	writel(mac_lo, &mac_dev->supp_mac_addr_3_0);
473 	writel(mac_hi, &mac_dev->supp_mac_addr_3_1);
474 
475 	return 0;
476 }
477 
altera_tse_send(struct udevice * dev,void * packet,int length)478 static int altera_tse_send(struct udevice *dev, void *packet, int length)
479 {
480 	struct altera_tse_priv *priv = dev_get_priv(dev);
481 	unsigned long tx_buf = (unsigned long)packet;
482 
483 	flush_dcache_range(tx_buf, tx_buf + length);
484 
485 	return priv->ops->send(dev, packet, length);
486 }
487 
altera_tse_recv(struct udevice * dev,int flags,uchar ** packetp)488 static int altera_tse_recv(struct udevice *dev, int flags, uchar **packetp)
489 {
490 	struct altera_tse_priv *priv = dev_get_priv(dev);
491 
492 	return priv->ops->recv(dev, flags, packetp);
493 }
494 
altera_tse_free_pkt(struct udevice * dev,uchar * packet,int length)495 static int altera_tse_free_pkt(struct udevice *dev, uchar *packet,
496 			       int length)
497 {
498 	struct altera_tse_priv *priv = dev_get_priv(dev);
499 	unsigned long rx_buf = (unsigned long)priv->rx_buf;
500 
501 	invalidate_dcache_range(rx_buf, rx_buf + PKTSIZE_ALIGN);
502 
503 	return priv->ops->free_pkt(dev, packet, length);
504 }
505 
altera_tse_stop(struct udevice * dev)506 static void altera_tse_stop(struct udevice *dev)
507 {
508 	struct altera_tse_priv *priv = dev_get_priv(dev);
509 
510 	priv->ops->stop(dev);
511 	altera_tse_stop_mac(priv);
512 }
513 
altera_tse_start(struct udevice * dev)514 static int altera_tse_start(struct udevice *dev)
515 {
516 	struct altera_tse_priv *priv = dev_get_priv(dev);
517 	struct alt_tse_mac *mac_dev = priv->mac_dev;
518 	u32 val;
519 	int ret;
520 
521 	/* need to create sgdma */
522 	debug("Configuring rx desc\n");
523 	altera_tse_free_pkt(dev, priv->rx_buf, PKTSIZE_ALIGN);
524 	/* start TSE */
525 	debug("Configuring TSE Mac\n");
526 	/* Initialize MAC registers */
527 	writel(PKTSIZE_ALIGN, &mac_dev->max_frame_length);
528 	writel(priv->rx_fifo_depth - 16, &mac_dev->rx_sel_empty_threshold);
529 	writel(0, &mac_dev->rx_sel_full_threshold);
530 	writel(priv->tx_fifo_depth - 16, &mac_dev->tx_sel_empty_threshold);
531 	writel(0, &mac_dev->tx_sel_full_threshold);
532 	writel(8, &mac_dev->rx_almost_empty_threshold);
533 	writel(8, &mac_dev->rx_almost_full_threshold);
534 	writel(8, &mac_dev->tx_almost_empty_threshold);
535 	writel(3, &mac_dev->tx_almost_full_threshold);
536 
537 	/* NO Shift */
538 	writel(0, &mac_dev->rx_cmd_stat);
539 	writel(0, &mac_dev->tx_cmd_stat);
540 
541 	/* enable MAC */
542 	val = ALTERA_TSE_CMD_TX_ENA_MSK | ALTERA_TSE_CMD_RX_ENA_MSK;
543 	writel(val, &mac_dev->command_config);
544 
545 	/* Start up the PHY */
546 	ret = phy_startup(priv->phydev);
547 	if (ret) {
548 		debug("Could not initialize PHY %s\n",
549 		      priv->phydev->dev->name);
550 		return ret;
551 	}
552 
553 	tse_adjust_link(priv, priv->phydev);
554 
555 	if (!priv->phydev->link)
556 		return -EIO;
557 
558 	return 0;
559 }
560 
561 static const struct tse_ops tse_sgdma_ops = {
562 	.send		= altera_tse_send_sgdma,
563 	.recv		= altera_tse_recv_sgdma,
564 	.free_pkt	= altera_tse_free_pkt_sgdma,
565 	.stop		= altera_tse_stop_sgdma,
566 };
567 
568 static const struct tse_ops tse_msgdma_ops = {
569 	.send		= altera_tse_send_msgdma,
570 	.recv		= altera_tse_recv_msgdma,
571 	.free_pkt	= altera_tse_free_pkt_msgdma,
572 	.stop		= altera_tse_stop_msgdma,
573 };
574 
altera_tse_probe(struct udevice * dev)575 static int altera_tse_probe(struct udevice *dev)
576 {
577 	struct eth_pdata *pdata = dev_get_platdata(dev);
578 	struct altera_tse_priv *priv = dev_get_priv(dev);
579 	void *blob = (void *)gd->fdt_blob;
580 	int node = dev_of_offset(dev);
581 	const char *list, *end;
582 	const fdt32_t *cell;
583 	void *base, *desc_mem = NULL;
584 	unsigned long addr, size;
585 	int parent, addrc, sizec;
586 	int len, idx;
587 	int ret;
588 
589 	priv->dma_type = dev_get_driver_data(dev);
590 	if (priv->dma_type == ALT_SGDMA)
591 		priv->ops = &tse_sgdma_ops;
592 	else
593 		priv->ops = &tse_msgdma_ops;
594 	/*
595 	 * decode regs. there are multiple reg tuples, and they need to
596 	 * match with reg-names.
597 	 */
598 	parent = fdt_parent_offset(blob, node);
599 	fdt_support_default_count_cells(blob, parent, &addrc, &sizec);
600 	list = fdt_getprop(blob, node, "reg-names", &len);
601 	if (!list)
602 		return -ENOENT;
603 	end = list + len;
604 	cell = fdt_getprop(blob, node, "reg", &len);
605 	if (!cell)
606 		return -ENOENT;
607 	idx = 0;
608 	while (list < end) {
609 		addr = fdt_translate_address((void *)blob,
610 					     node, cell + idx);
611 		size = fdt_addr_to_cpu(cell[idx + addrc]);
612 		base = map_physmem(addr, size, MAP_NOCACHE);
613 		len = strlen(list);
614 		if (strcmp(list, "control_port") == 0)
615 			priv->mac_dev = base;
616 		else if (strcmp(list, "rx_csr") == 0)
617 			priv->sgdma_rx = base;
618 		else if (strcmp(list, "rx_desc") == 0)
619 			priv->rx_desc = base;
620 		else if (strcmp(list, "rx_resp") == 0)
621 			priv->rx_resp = base;
622 		else if (strcmp(list, "tx_csr") == 0)
623 			priv->sgdma_tx = base;
624 		else if (strcmp(list, "tx_desc") == 0)
625 			priv->tx_desc = base;
626 		else if (strcmp(list, "s1") == 0)
627 			desc_mem = base;
628 		idx += addrc + sizec;
629 		list += (len + 1);
630 	}
631 	/* decode fifo depth */
632 	priv->rx_fifo_depth = fdtdec_get_int(blob, node,
633 		"rx-fifo-depth", 0);
634 	priv->tx_fifo_depth = fdtdec_get_int(blob, node,
635 		"tx-fifo-depth", 0);
636 	/* decode phy */
637 	addr = fdtdec_get_int(blob, node,
638 			      "phy-handle", 0);
639 	addr = fdt_node_offset_by_phandle(blob, addr);
640 	priv->phyaddr = fdtdec_get_int(blob, addr,
641 		"reg", 0);
642 	/* init desc */
643 	if (priv->dma_type == ALT_SGDMA) {
644 		len = sizeof(struct alt_sgdma_descriptor) * 4;
645 		if (!desc_mem) {
646 			desc_mem = dma_alloc_coherent(len, &addr);
647 			if (!desc_mem)
648 				return -ENOMEM;
649 		}
650 		memset(desc_mem, 0, len);
651 		priv->tx_desc = desc_mem;
652 		priv->rx_desc = priv->tx_desc +
653 			2 * sizeof(struct alt_sgdma_descriptor);
654 	}
655 	/* allocate recv packet buffer */
656 	priv->rx_buf = malloc_cache_aligned(PKTSIZE_ALIGN);
657 	if (!priv->rx_buf)
658 		return -ENOMEM;
659 
660 	/* stop controller */
661 	debug("Reset TSE & SGDMAs\n");
662 	altera_tse_stop(dev);
663 
664 	/* start the phy */
665 	priv->interface = pdata->phy_interface;
666 	tse_mdio_init(dev->name, priv);
667 	priv->bus = miiphy_get_dev_by_name(dev->name);
668 
669 	ret = tse_phy_init(priv, dev);
670 
671 	return ret;
672 }
673 
altera_tse_ofdata_to_platdata(struct udevice * dev)674 static int altera_tse_ofdata_to_platdata(struct udevice *dev)
675 {
676 	struct eth_pdata *pdata = dev_get_platdata(dev);
677 	const char *phy_mode;
678 
679 	pdata->phy_interface = -1;
680 	phy_mode = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "phy-mode",
681 			       NULL);
682 	if (phy_mode)
683 		pdata->phy_interface = phy_get_interface_by_name(phy_mode);
684 	if (pdata->phy_interface == -1) {
685 		debug("%s: Invalid PHY interface '%s'\n", __func__, phy_mode);
686 		return -EINVAL;
687 	}
688 
689 	return 0;
690 }
691 
692 static const struct eth_ops altera_tse_ops = {
693 	.start		= altera_tse_start,
694 	.send		= altera_tse_send,
695 	.recv		= altera_tse_recv,
696 	.free_pkt	= altera_tse_free_pkt,
697 	.stop		= altera_tse_stop,
698 	.write_hwaddr	= altera_tse_write_hwaddr,
699 };
700 
701 static const struct udevice_id altera_tse_ids[] = {
702 	{ .compatible = "altr,tse-msgdma-1.0", .data = ALT_MSGDMA },
703 	{ .compatible = "altr,tse-1.0", .data = ALT_SGDMA },
704 	{}
705 };
706 
707 U_BOOT_DRIVER(altera_tse) = {
708 	.name	= "altera_tse",
709 	.id	= UCLASS_ETH,
710 	.of_match = altera_tse_ids,
711 	.ops	= &altera_tse_ops,
712 	.ofdata_to_platdata = altera_tse_ofdata_to_platdata,
713 	.platdata_auto_alloc_size = sizeof(struct eth_pdata),
714 	.priv_auto_alloc_size = sizeof(struct altera_tse_priv),
715 	.probe	= altera_tse_probe,
716 };
717