1 /*
2 * ax88180: ASIX AX88180 Non-PCI Gigabit Ethernet u-boot driver
3 *
4 * This program is free software; you can distribute it and/or modify
5 * it under the terms of the GNU General Public License (Version 2) as
6 * published by the Free Software Foundation.
7 * This program is distributed in the hope it will be useful, but
8 * WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
10 * See the GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
14 * USA.
15 */
16
17 /*
18 * ========================================================================
19 * ASIX AX88180 Non-PCI 16/32-bit Gigabit Ethernet Linux Driver
20 *
21 * The AX88180 Ethernet controller is a high performance and highly
22 * integrated local CPU bus Ethernet controller with embedded 40K bytes
23 * SRAM and supports both 16-bit and 32-bit SRAM-Like interfaces for any
24 * embedded systems.
25 * The AX88180 is a single chip 10/100/1000Mbps Gigabit Ethernet
26 * controller that supports both MII and RGMII interfaces and is
27 * compliant to IEEE 802.3, IEEE 802.3u and IEEE 802.3z standards.
28 *
29 * Please visit ASIX's web site (http://www.asix.com.tw) for more
30 * details.
31 *
32 * Module Name : ax88180.c
33 * Date : 2008-07-07
34 * History
35 * 09/06/2006 : New release for AX88180 US2 chip.
36 * 07/07/2008 : Fix up the coding style and using inline functions
37 * instead of macros
38 * ========================================================================
39 */
40 #include <common.h>
41 #include <command.h>
42 #include <net.h>
43 #include <malloc.h>
44 #include <linux/mii.h>
45 #include "ax88180.h"
46
47 /*
48 * ===========================================================================
49 * Local SubProgram Declaration
50 * ===========================================================================
51 */
52 static void ax88180_rx_handler (struct eth_device *dev);
53 static int ax88180_phy_initial (struct eth_device *dev);
54 static void ax88180_media_config (struct eth_device *dev);
55 static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev);
56 static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev);
57 static unsigned short ax88180_mdio_read (struct eth_device *dev,
58 unsigned long regaddr);
59 static void ax88180_mdio_write (struct eth_device *dev,
60 unsigned long regaddr, unsigned short regdata);
61
62 /*
63 * ===========================================================================
64 * Local SubProgram Bodies
65 * ===========================================================================
66 */
ax88180_mdio_check_complete(struct eth_device * dev)67 static int ax88180_mdio_check_complete (struct eth_device *dev)
68 {
69 int us_cnt = 10000;
70 unsigned short tmpval;
71
72 /* MDIO read/write should not take more than 10 ms */
73 while (--us_cnt) {
74 tmpval = INW (dev, MDIOCTRL);
75 if (((tmpval & READ_PHY) == 0) && ((tmpval & WRITE_PHY) == 0))
76 break;
77 }
78
79 return us_cnt;
80 }
81
82 static unsigned short
ax88180_mdio_read(struct eth_device * dev,unsigned long regaddr)83 ax88180_mdio_read (struct eth_device *dev, unsigned long regaddr)
84 {
85 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
86 unsigned long tmpval = 0;
87
88 OUTW (dev, (READ_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL);
89
90 if (ax88180_mdio_check_complete (dev))
91 tmpval = INW (dev, MDIODP);
92 else
93 printf ("Failed to read PHY register!\n");
94
95 return (unsigned short)(tmpval & 0xFFFF);
96 }
97
98 static void
ax88180_mdio_write(struct eth_device * dev,unsigned long regaddr,unsigned short regdata)99 ax88180_mdio_write (struct eth_device *dev, unsigned long regaddr,
100 unsigned short regdata)
101 {
102 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
103
104 OUTW (dev, regdata, MDIODP);
105
106 OUTW (dev, (WRITE_PHY | (regaddr << 8) | priv->PhyAddr), MDIOCTRL);
107
108 if (!ax88180_mdio_check_complete (dev))
109 printf ("Failed to write PHY register!\n");
110 }
111
ax88180_phy_reset(struct eth_device * dev)112 static int ax88180_phy_reset (struct eth_device *dev)
113 {
114 unsigned short delay_cnt = 500;
115
116 ax88180_mdio_write (dev, MII_BMCR, (BMCR_RESET | BMCR_ANENABLE));
117
118 /* Wait for the reset to complete, or time out (500 ms) */
119 while (ax88180_mdio_read (dev, MII_BMCR) & BMCR_RESET) {
120 udelay (1000);
121 if (--delay_cnt == 0) {
122 printf ("Failed to reset PHY!\n");
123 return -1;
124 }
125 }
126
127 return 0;
128 }
129
ax88180_mac_reset(struct eth_device * dev)130 static void ax88180_mac_reset (struct eth_device *dev)
131 {
132 unsigned long tmpval;
133 unsigned char i;
134
135 struct {
136 unsigned short offset, value;
137 } program_seq[] = {
138 {
139 MISC, MISC_NORMAL}, {
140 RXINDICATOR, DEFAULT_RXINDICATOR}, {
141 TXCMD, DEFAULT_TXCMD}, {
142 TXBS, DEFAULT_TXBS}, {
143 TXDES0, DEFAULT_TXDES0}, {
144 TXDES1, DEFAULT_TXDES1}, {
145 TXDES2, DEFAULT_TXDES2}, {
146 TXDES3, DEFAULT_TXDES3}, {
147 TXCFG, DEFAULT_TXCFG}, {
148 MACCFG2, DEFAULT_MACCFG2}, {
149 MACCFG3, DEFAULT_MACCFG3}, {
150 TXLEN, DEFAULT_TXLEN}, {
151 RXBTHD0, DEFAULT_RXBTHD0}, {
152 RXBTHD1, DEFAULT_RXBTHD1}, {
153 RXFULTHD, DEFAULT_RXFULTHD}, {
154 DOGTHD0, DEFAULT_DOGTHD0}, {
155 DOGTHD1, DEFAULT_DOGTHD1},};
156
157 OUTW (dev, MISC_RESET_MAC, MISC);
158 tmpval = INW (dev, MISC);
159
160 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
161 OUTW (dev, program_seq[i].value, program_seq[i].offset);
162 }
163
ax88180_poll_tx_complete(struct eth_device * dev)164 static int ax88180_poll_tx_complete (struct eth_device *dev)
165 {
166 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
167 unsigned long tmpval, txbs_txdp;
168 int TimeOutCnt = 10000;
169
170 txbs_txdp = 1 << priv->NextTxDesc;
171
172 while (TimeOutCnt--) {
173
174 tmpval = INW (dev, TXBS);
175
176 if ((tmpval & txbs_txdp) == 0)
177 break;
178
179 udelay (100);
180 }
181
182 if (TimeOutCnt)
183 return 0;
184 else
185 return -TimeOutCnt;
186 }
187
ax88180_rx_handler(struct eth_device * dev)188 static void ax88180_rx_handler (struct eth_device *dev)
189 {
190 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
191 unsigned long data_size;
192 unsigned short rxcurt_ptr, rxbound_ptr, next_ptr;
193 int i;
194 #if defined (CONFIG_DRIVER_AX88180_16BIT)
195 unsigned short *rxdata = (unsigned short *)net_rx_packets[0];
196 #else
197 unsigned long *rxdata = (unsigned long *)net_rx_packets[0];
198 #endif
199 unsigned short count;
200
201 rxcurt_ptr = INW (dev, RXCURT);
202 rxbound_ptr = INW (dev, RXBOUND);
203 next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK;
204
205 debug ("ax88180: RX original RXBOUND=0x%04x,"
206 " RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
207
208 while (next_ptr != rxcurt_ptr) {
209
210 OUTW (dev, RX_START_READ, RXINDICATOR);
211
212 data_size = READ_RXBUF (dev) & 0xFFFF;
213
214 if ((data_size == 0) || (data_size > MAX_RX_SIZE)) {
215
216 OUTW (dev, RX_STOP_READ, RXINDICATOR);
217
218 ax88180_mac_reset (dev);
219 printf ("ax88180: Invalid Rx packet length!"
220 " (len=0x%04lx)\n", data_size);
221
222 debug ("ax88180: RX RXBOUND=0x%04x,"
223 "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
224 return;
225 }
226
227 rxbound_ptr += (((data_size + 0xF) & 0xFFF0) >> 4) + 1;
228 rxbound_ptr &= RX_PAGE_NUM_MASK;
229
230 /* Comput access times */
231 count = (data_size + priv->PadSize) >> priv->BusWidth;
232
233 for (i = 0; i < count; i++) {
234 *(rxdata + i) = READ_RXBUF (dev);
235 }
236
237 OUTW (dev, RX_STOP_READ, RXINDICATOR);
238
239 /* Pass the packet up to the protocol layers. */
240 net_process_received_packet(net_rx_packets[0], data_size);
241
242 OUTW (dev, rxbound_ptr, RXBOUND);
243
244 rxcurt_ptr = INW (dev, RXCURT);
245 rxbound_ptr = INW (dev, RXBOUND);
246 next_ptr = (rxbound_ptr + 1) & RX_PAGE_NUM_MASK;
247
248 debug ("ax88180: RX updated RXBOUND=0x%04x,"
249 "RXCURT=0x%04x\n", rxbound_ptr, rxcurt_ptr);
250 }
251
252 return;
253 }
254
ax88180_phy_initial(struct eth_device * dev)255 static int ax88180_phy_initial (struct eth_device *dev)
256 {
257 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
258 unsigned long tmp_regval;
259 unsigned short phyaddr;
260
261 /* Search for first avaliable PHY chipset */
262 #ifdef CONFIG_PHY_ADDR
263 phyaddr = CONFIG_PHY_ADDR;
264 #else
265 for (phyaddr = 0; phyaddr < 32; ++phyaddr)
266 #endif
267 {
268 priv->PhyAddr = phyaddr;
269 priv->PhyID0 = ax88180_mdio_read(dev, MII_PHYSID1);
270 priv->PhyID1 = ax88180_mdio_read(dev, MII_PHYSID2);
271
272 switch (priv->PhyID0) {
273 case MARVELL_ALASKA_PHYSID0:
274 debug("ax88180: Found Marvell Alaska PHY family."
275 " (PHY Addr=0x%x)\n", priv->PhyAddr);
276
277 switch (priv->PhyID1) {
278 case MARVELL_88E1118_PHYSID1:
279 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 2);
280 ax88180_mdio_write(dev, M88E1118_CR,
281 M88E1118_CR_DEFAULT);
282 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 3);
283 ax88180_mdio_write(dev, M88E1118_LEDCTL,
284 M88E1118_LEDCTL_DEFAULT);
285 ax88180_mdio_write(dev, M88E1118_LEDMIX,
286 M88E1118_LEDMIX_LED050 | M88E1118_LEDMIX_LED150 | 0x15);
287 ax88180_mdio_write(dev, M88E1118_PAGE_SEL, 0);
288 default: /* Default to 88E1111 Phy */
289 tmp_regval = ax88180_mdio_read(dev, M88E1111_EXT_SSR);
290 if ((tmp_regval & HWCFG_MODE_MASK) != RGMII_COPPER_MODE)
291 ax88180_mdio_write(dev, M88E1111_EXT_SCR,
292 DEFAULT_EXT_SCR);
293 }
294
295 if (ax88180_phy_reset(dev) < 0)
296 return 0;
297 ax88180_mdio_write(dev, M88_IER, LINK_CHANGE_INT);
298
299 return 1;
300
301 case CICADA_CIS8201_PHYSID0:
302 debug("ax88180: Found CICADA CIS8201 PHY"
303 " chipset. (PHY Addr=0x%x)\n", priv->PhyAddr);
304
305 ax88180_mdio_write(dev, CIS_IMR,
306 (CIS_INT_ENABLE | LINK_CHANGE_INT));
307
308 /* Set CIS_SMI_PRIORITY bit before force the media mode */
309 tmp_regval = ax88180_mdio_read(dev, CIS_AUX_CTRL_STATUS);
310 tmp_regval &= ~CIS_SMI_PRIORITY;
311 ax88180_mdio_write(dev, CIS_AUX_CTRL_STATUS, tmp_regval);
312
313 return 1;
314
315 case 0xffff:
316 /* No PHY at this addr */
317 break;
318
319 default:
320 printf("ax88180: Unknown PHY chipset %#x at addr %#x\n",
321 priv->PhyID0, priv->PhyAddr);
322 break;
323 }
324 }
325
326 printf("ax88180: Unknown PHY chipset!!\n");
327 return 0;
328 }
329
ax88180_media_config(struct eth_device * dev)330 static void ax88180_media_config (struct eth_device *dev)
331 {
332 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
333 unsigned long bmcr_val, bmsr_val;
334 unsigned long rxcfg_val, maccfg0_val, maccfg1_val;
335 unsigned long RealMediaMode;
336 int i;
337
338 /* Waiting 2 seconds for PHY link stable */
339 for (i = 0; i < 20000; i++) {
340 bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
341 if (bmsr_val & BMSR_LSTATUS) {
342 break;
343 }
344 udelay (100);
345 }
346
347 bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
348 debug ("ax88180: BMSR=0x%04x\n", (unsigned int)bmsr_val);
349
350 if (bmsr_val & BMSR_LSTATUS) {
351 bmcr_val = ax88180_mdio_read (dev, MII_BMCR);
352
353 if (bmcr_val & BMCR_ANENABLE) {
354
355 /*
356 * Waiting for Auto-negotiation completion, this may
357 * take up to 5 seconds.
358 */
359 debug ("ax88180: Auto-negotiation is "
360 "enabled. Waiting for NWay completion..\n");
361 for (i = 0; i < 50000; i++) {
362 bmsr_val = ax88180_mdio_read (dev, MII_BMSR);
363 if (bmsr_val & BMSR_ANEGCOMPLETE) {
364 break;
365 }
366 udelay (100);
367 }
368 } else
369 debug ("ax88180: Auto-negotiation is disabled.\n");
370
371 debug ("ax88180: BMCR=0x%04x, BMSR=0x%04x\n",
372 (unsigned int)bmcr_val, (unsigned int)bmsr_val);
373
374 /* Get real media mode here */
375 switch (priv->PhyID0) {
376 case MARVELL_ALASKA_PHYSID0:
377 RealMediaMode = get_MarvellPHY_media_mode(dev);
378 break;
379 case CICADA_CIS8201_PHYSID0:
380 RealMediaMode = get_CicadaPHY_media_mode(dev);
381 break;
382 default:
383 RealMediaMode = MEDIA_1000FULL;
384 break;
385 }
386
387 priv->LinkState = INS_LINK_UP;
388
389 switch (RealMediaMode) {
390 case MEDIA_1000FULL:
391 debug ("ax88180: 1000Mbps Full-duplex mode.\n");
392 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
393 maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0;
394 maccfg1_val = GIGA_MODE_EN | RXFLOW_EN |
395 FULLDUPLEX | DEFAULT_MACCFG1;
396 break;
397
398 case MEDIA_1000HALF:
399 debug ("ax88180: 1000Mbps Half-duplex mode.\n");
400 rxcfg_val = DEFAULT_RXCFG;
401 maccfg0_val = DEFAULT_MACCFG0;
402 maccfg1_val = GIGA_MODE_EN | DEFAULT_MACCFG1;
403 break;
404
405 case MEDIA_100FULL:
406 debug ("ax88180: 100Mbps Full-duplex mode.\n");
407 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
408 maccfg0_val = SPEED100 | TXFLOW_ENABLE
409 | DEFAULT_MACCFG0;
410 maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1;
411 break;
412
413 case MEDIA_100HALF:
414 debug ("ax88180: 100Mbps Half-duplex mode.\n");
415 rxcfg_val = DEFAULT_RXCFG;
416 maccfg0_val = SPEED100 | DEFAULT_MACCFG0;
417 maccfg1_val = DEFAULT_MACCFG1;
418 break;
419
420 case MEDIA_10FULL:
421 debug ("ax88180: 10Mbps Full-duplex mode.\n");
422 rxcfg_val = RXFLOW_ENABLE | DEFAULT_RXCFG;
423 maccfg0_val = TXFLOW_ENABLE | DEFAULT_MACCFG0;
424 maccfg1_val = RXFLOW_EN | FULLDUPLEX | DEFAULT_MACCFG1;
425 break;
426
427 case MEDIA_10HALF:
428 debug ("ax88180: 10Mbps Half-duplex mode.\n");
429 rxcfg_val = DEFAULT_RXCFG;
430 maccfg0_val = DEFAULT_MACCFG0;
431 maccfg1_val = DEFAULT_MACCFG1;
432 break;
433 default:
434 debug ("ax88180: Unknow media mode.\n");
435 rxcfg_val = DEFAULT_RXCFG;
436 maccfg0_val = DEFAULT_MACCFG0;
437 maccfg1_val = DEFAULT_MACCFG1;
438
439 priv->LinkState = INS_LINK_DOWN;
440 break;
441 }
442
443 } else {
444 rxcfg_val = DEFAULT_RXCFG;
445 maccfg0_val = DEFAULT_MACCFG0;
446 maccfg1_val = DEFAULT_MACCFG1;
447
448 priv->LinkState = INS_LINK_DOWN;
449 }
450
451 OUTW (dev, rxcfg_val, RXCFG);
452 OUTW (dev, maccfg0_val, MACCFG0);
453 OUTW (dev, maccfg1_val, MACCFG1);
454
455 return;
456 }
457
get_MarvellPHY_media_mode(struct eth_device * dev)458 static unsigned long get_MarvellPHY_media_mode (struct eth_device *dev)
459 {
460 unsigned long m88_ssr;
461 unsigned long MediaMode;
462
463 m88_ssr = ax88180_mdio_read (dev, M88_SSR);
464 switch (m88_ssr & SSR_MEDIA_MASK) {
465 case SSR_1000FULL:
466 MediaMode = MEDIA_1000FULL;
467 break;
468 case SSR_1000HALF:
469 MediaMode = MEDIA_1000HALF;
470 break;
471 case SSR_100FULL:
472 MediaMode = MEDIA_100FULL;
473 break;
474 case SSR_100HALF:
475 MediaMode = MEDIA_100HALF;
476 break;
477 case SSR_10FULL:
478 MediaMode = MEDIA_10FULL;
479 break;
480 case SSR_10HALF:
481 MediaMode = MEDIA_10HALF;
482 break;
483 default:
484 MediaMode = MEDIA_UNKNOWN;
485 break;
486 }
487
488 return MediaMode;
489 }
490
get_CicadaPHY_media_mode(struct eth_device * dev)491 static unsigned long get_CicadaPHY_media_mode (struct eth_device *dev)
492 {
493 unsigned long tmp_regval;
494 unsigned long MediaMode;
495
496 tmp_regval = ax88180_mdio_read (dev, CIS_AUX_CTRL_STATUS);
497 switch (tmp_regval & CIS_MEDIA_MASK) {
498 case CIS_1000FULL:
499 MediaMode = MEDIA_1000FULL;
500 break;
501 case CIS_1000HALF:
502 MediaMode = MEDIA_1000HALF;
503 break;
504 case CIS_100FULL:
505 MediaMode = MEDIA_100FULL;
506 break;
507 case CIS_100HALF:
508 MediaMode = MEDIA_100HALF;
509 break;
510 case CIS_10FULL:
511 MediaMode = MEDIA_10FULL;
512 break;
513 case CIS_10HALF:
514 MediaMode = MEDIA_10HALF;
515 break;
516 default:
517 MediaMode = MEDIA_UNKNOWN;
518 break;
519 }
520
521 return MediaMode;
522 }
523
ax88180_halt(struct eth_device * dev)524 static void ax88180_halt (struct eth_device *dev)
525 {
526 /* Disable AX88180 TX/RX functions */
527 OUTW (dev, WAKEMOD, CMD);
528 }
529
ax88180_init(struct eth_device * dev,bd_t * bd)530 static int ax88180_init (struct eth_device *dev, bd_t * bd)
531 {
532 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
533 unsigned short tmp_regval;
534
535 ax88180_mac_reset (dev);
536
537 /* Disable interrupt */
538 OUTW (dev, CLEAR_IMR, IMR);
539
540 /* Disable AX88180 TX/RX functions */
541 OUTW (dev, WAKEMOD, CMD);
542
543 /* Fill the MAC address */
544 tmp_regval =
545 dev->enetaddr[0] | (((unsigned short)dev->enetaddr[1]) << 8);
546 OUTW (dev, tmp_regval, MACID0);
547
548 tmp_regval =
549 dev->enetaddr[2] | (((unsigned short)dev->enetaddr[3]) << 8);
550 OUTW (dev, tmp_regval, MACID1);
551
552 tmp_regval =
553 dev->enetaddr[4] | (((unsigned short)dev->enetaddr[5]) << 8);
554 OUTW (dev, tmp_regval, MACID2);
555
556 ax88180_media_config (dev);
557
558 OUTW (dev, DEFAULT_RXFILTER, RXFILTER);
559
560 /* Initial variables here */
561 priv->FirstTxDesc = TXDP0;
562 priv->NextTxDesc = TXDP0;
563
564 /* Check if there is any invalid interrupt status and clear it. */
565 OUTW (dev, INW (dev, ISR), ISR);
566
567 /* Start AX88180 TX/RX functions */
568 OUTW (dev, (RXEN | TXEN | WAKEMOD), CMD);
569
570 return 0;
571 }
572
573 /* Get a data block via Ethernet */
ax88180_recv(struct eth_device * dev)574 static int ax88180_recv (struct eth_device *dev)
575 {
576 unsigned short ISR_Status;
577 unsigned short tmp_regval;
578
579 /* Read and check interrupt status here. */
580 ISR_Status = INW (dev, ISR);
581
582 while (ISR_Status) {
583 /* Clear the interrupt status */
584 OUTW (dev, ISR_Status, ISR);
585
586 debug ("\nax88180: The interrupt status = 0x%04x\n",
587 ISR_Status);
588
589 if (ISR_Status & ISR_PHY) {
590 /* Read ISR register once to clear PHY interrupt bit */
591 tmp_regval = ax88180_mdio_read (dev, M88_ISR);
592 ax88180_media_config (dev);
593 }
594
595 if ((ISR_Status & ISR_RX) || (ISR_Status & ISR_RXBUFFOVR)) {
596 ax88180_rx_handler (dev);
597 }
598
599 /* Read and check interrupt status again */
600 ISR_Status = INW (dev, ISR);
601 }
602
603 return 0;
604 }
605
606 /* Send a data block via Ethernet. */
ax88180_send(struct eth_device * dev,void * packet,int length)607 static int ax88180_send(struct eth_device *dev, void *packet, int length)
608 {
609 struct ax88180_private *priv = (struct ax88180_private *)dev->priv;
610 unsigned short TXDES_addr;
611 unsigned short txcmd_txdp, txbs_txdp;
612 unsigned short tmp_data;
613 int i;
614 #if defined (CONFIG_DRIVER_AX88180_16BIT)
615 volatile unsigned short *txdata = (volatile unsigned short *)packet;
616 #else
617 volatile unsigned long *txdata = (volatile unsigned long *)packet;
618 #endif
619 unsigned short count;
620
621 if (priv->LinkState != INS_LINK_UP) {
622 return 0;
623 }
624
625 priv->FirstTxDesc = priv->NextTxDesc;
626 txbs_txdp = 1 << priv->FirstTxDesc;
627
628 debug ("ax88180: TXDP%d is available\n", priv->FirstTxDesc);
629
630 txcmd_txdp = priv->FirstTxDesc << 13;
631 TXDES_addr = TXDES0 + (priv->FirstTxDesc << 2);
632
633 OUTW (dev, (txcmd_txdp | length | TX_START_WRITE), TXCMD);
634
635 /* Comput access times */
636 count = (length + priv->PadSize) >> priv->BusWidth;
637
638 for (i = 0; i < count; i++) {
639 WRITE_TXBUF (dev, *(txdata + i));
640 }
641
642 OUTW (dev, txcmd_txdp | length, TXCMD);
643 OUTW (dev, txbs_txdp, TXBS);
644 OUTW (dev, (TXDPx_ENABLE | length), TXDES_addr);
645
646 priv->NextTxDesc = (priv->NextTxDesc + 1) & TXDP_MASK;
647
648 /*
649 * Check the available transmit descriptor, if we had exhausted all
650 * transmit descriptor ,then we have to wait for at least one free
651 * descriptor
652 */
653 txbs_txdp = 1 << priv->NextTxDesc;
654 tmp_data = INW (dev, TXBS);
655
656 if (tmp_data & txbs_txdp) {
657 if (ax88180_poll_tx_complete (dev) < 0) {
658 ax88180_mac_reset (dev);
659 priv->FirstTxDesc = TXDP0;
660 priv->NextTxDesc = TXDP0;
661 printf ("ax88180: Transmit time out occurred!\n");
662 }
663 }
664
665 return 0;
666 }
667
ax88180_read_mac_addr(struct eth_device * dev)668 static void ax88180_read_mac_addr (struct eth_device *dev)
669 {
670 unsigned short macid0_val, macid1_val, macid2_val;
671 unsigned short tmp_regval;
672 unsigned short i;
673
674 /* Reload MAC address from EEPROM */
675 OUTW (dev, RELOAD_EEPROM, PROMCTRL);
676
677 /* Waiting for reload eeprom completion */
678 for (i = 0; i < 500; i++) {
679 tmp_regval = INW (dev, PROMCTRL);
680 if ((tmp_regval & RELOAD_EEPROM) == 0)
681 break;
682 udelay (1000);
683 }
684
685 /* Get MAC addresses */
686 macid0_val = INW (dev, MACID0);
687 macid1_val = INW (dev, MACID1);
688 macid2_val = INW (dev, MACID2);
689
690 if (((macid0_val | macid1_val | macid2_val) != 0) &&
691 ((macid0_val & 0x01) == 0)) {
692 dev->enetaddr[0] = (unsigned char)macid0_val;
693 dev->enetaddr[1] = (unsigned char)(macid0_val >> 8);
694 dev->enetaddr[2] = (unsigned char)macid1_val;
695 dev->enetaddr[3] = (unsigned char)(macid1_val >> 8);
696 dev->enetaddr[4] = (unsigned char)macid2_val;
697 dev->enetaddr[5] = (unsigned char)(macid2_val >> 8);
698 }
699 }
700
701 /* Exported SubProgram Bodies */
ax88180_initialize(bd_t * bis)702 int ax88180_initialize (bd_t * bis)
703 {
704 struct eth_device *dev;
705 struct ax88180_private *priv;
706
707 dev = (struct eth_device *)malloc (sizeof *dev);
708
709 if (NULL == dev)
710 return 0;
711
712 memset (dev, 0, sizeof *dev);
713
714 priv = (struct ax88180_private *)malloc (sizeof (*priv));
715
716 if (NULL == priv)
717 return 0;
718
719 memset (priv, 0, sizeof *priv);
720
721 strcpy(dev->name, "ax88180");
722 dev->iobase = AX88180_BASE;
723 dev->priv = priv;
724 dev->init = ax88180_init;
725 dev->halt = ax88180_halt;
726 dev->send = ax88180_send;
727 dev->recv = ax88180_recv;
728
729 priv->BusWidth = BUS_WIDTH_32;
730 priv->PadSize = 3;
731 #if defined (CONFIG_DRIVER_AX88180_16BIT)
732 OUTW (dev, (START_BASE >> 8), BASE);
733 OUTW (dev, DECODE_EN, DECODE);
734
735 priv->BusWidth = BUS_WIDTH_16;
736 priv->PadSize = 1;
737 #endif
738
739 ax88180_mac_reset (dev);
740
741 /* Disable interrupt */
742 OUTW (dev, CLEAR_IMR, IMR);
743
744 /* Disable AX88180 TX/RX functions */
745 OUTW (dev, WAKEMOD, CMD);
746
747 ax88180_read_mac_addr (dev);
748
749 eth_register (dev);
750
751 return ax88180_phy_initial (dev);
752
753 }
754