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25#include <common.h>
26#include <command.h>
27#include <net.h>
28#include <miiphy.h>
29#include <malloc.h>
30#include <netdev.h>
31#include <linux/compiler.h>
32#include <asm/arch/emac_defs.h>
33#include <asm/io.h>
34#include "davinci_emac.h"
35
36unsigned int emac_dbg = 0;
37#define debug_emac(fmt,args...) if (emac_dbg) printf(fmt,##args)
38
39#ifdef EMAC_HW_RAM_ADDR
40static inline unsigned long BD_TO_HW(unsigned long x)
41{
42 if (x == 0)
43 return 0;
44
45 return x - EMAC_WRAPPER_RAM_ADDR + EMAC_HW_RAM_ADDR;
46}
47
48static inline unsigned long HW_TO_BD(unsigned long x)
49{
50 if (x == 0)
51 return 0;
52
53 return x - EMAC_HW_RAM_ADDR + EMAC_WRAPPER_RAM_ADDR;
54}
55#else
56#define BD_TO_HW(x) (x)
57#define HW_TO_BD(x) (x)
58#endif
59
60#ifdef DAVINCI_EMAC_GIG_ENABLE
61#define emac_gigabit_enable(phy_addr) davinci_eth_gigabit_enable(phy_addr)
62#else
63#define emac_gigabit_enable(phy_addr)
64#endif
65
66#if !defined(CONFIG_SYS_EMAC_TI_CLKDIV)
67#define CONFIG_SYS_EMAC_TI_CLKDIV ((EMAC_MDIO_BUS_FREQ / \
68 EMAC_MDIO_CLOCK_FREQ) - 1)
69#endif
70
71static void davinci_eth_mdio_enable(void);
72
73static int gen_init_phy(int phy_addr);
74static int gen_is_phy_connected(int phy_addr);
75static int gen_get_link_speed(int phy_addr);
76static int gen_auto_negotiate(int phy_addr);
77
78void eth_mdio_enable(void)
79{
80 davinci_eth_mdio_enable();
81}
82
83
84static volatile emac_regs *adap_emac = (emac_regs *)EMAC_BASE_ADDR;
85static volatile ewrap_regs *adap_ewrap = (ewrap_regs *)EMAC_WRAPPER_BASE_ADDR;
86static volatile mdio_regs *adap_mdio = (mdio_regs *)EMAC_MDIO_BASE_ADDR;
87
88
89static volatile emac_desc *emac_rx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_RX_DESC_BASE);
90static volatile emac_desc *emac_tx_desc = (emac_desc *)(EMAC_WRAPPER_RAM_ADDR + EMAC_TX_DESC_BASE);
91static volatile emac_desc *emac_rx_active_head = 0;
92static volatile emac_desc *emac_rx_active_tail = 0;
93static int emac_rx_queue_active = 0;
94
95
96static unsigned char emac_rx_buffers[EMAC_MAX_RX_BUFFERS * EMAC_RXBUF_SIZE]
97 __aligned(ARCH_DMA_MINALIGN);
98
99#ifndef CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT
100#define CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 3
101#endif
102
103
104static u_int8_t active_phy_addr[CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT];
105
106
107static u_int8_t num_phy;
108
109phy_t phy[CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT];
110
111static int davinci_eth_set_mac_addr(struct eth_device *dev)
112{
113 unsigned long mac_hi;
114 unsigned long mac_lo;
115
116
117
118
119
120
121 writel(0, &adap_emac->MACINDEX);
122 mac_hi = (dev->enetaddr[3] << 24) |
123 (dev->enetaddr[2] << 16) |
124 (dev->enetaddr[1] << 8) |
125 (dev->enetaddr[0]);
126 mac_lo = (dev->enetaddr[5] << 8) |
127 (dev->enetaddr[4]);
128
129 writel(mac_hi, &adap_emac->MACADDRHI);
130#if defined(DAVINCI_EMAC_VERSION2)
131 writel(mac_lo | EMAC_MAC_ADDR_IS_VALID | EMAC_MAC_ADDR_MATCH,
132 &adap_emac->MACADDRLO);
133#else
134 writel(mac_lo, &adap_emac->MACADDRLO);
135#endif
136
137 writel(0, &adap_emac->MACHASH1);
138 writel(0, &adap_emac->MACHASH2);
139
140
141 writel(mac_hi, &adap_emac->MACSRCADDRHI);
142 writel(mac_lo, &adap_emac->MACSRCADDRLO);
143
144
145 return 0;
146}
147
148static void davinci_eth_mdio_enable(void)
149{
150 u_int32_t clkdiv;
151
152 clkdiv = CONFIG_SYS_EMAC_TI_CLKDIV;
153
154 writel((clkdiv & 0xff) |
155 MDIO_CONTROL_ENABLE |
156 MDIO_CONTROL_FAULT |
157 MDIO_CONTROL_FAULT_ENABLE,
158 &adap_mdio->CONTROL);
159
160 while (readl(&adap_mdio->CONTROL) & MDIO_CONTROL_IDLE)
161 ;
162}
163
164
165
166
167
168
169static int davinci_eth_phy_detect(void)
170{
171 u_int32_t phy_act_state;
172 int i;
173 int j;
174 unsigned int count = 0;
175
176 for (i = 0; i < CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT; i++)
177 active_phy_addr[i] = 0xff;
178
179 udelay(1000);
180 phy_act_state = readl(&adap_mdio->ALIVE);
181
182 if (phy_act_state == 0)
183 return 0;
184
185 debug_emac("davinci_eth_phy_detect(), ALIVE = 0x%08x\n", phy_act_state);
186
187 for (i = 0, j = 0; i < 32; i++)
188 if (phy_act_state & (1 << i)) {
189 count++;
190 if (count <= CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT) {
191 active_phy_addr[j++] = i;
192 } else {
193 printf("%s: to many PHYs detected.\n",
194 __func__);
195 count = 0;
196 break;
197 }
198 }
199
200 num_phy = count;
201
202 return count;
203}
204
205
206
207int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data)
208{
209 int tmp;
210
211 while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
212 ;
213
214 writel(MDIO_USERACCESS0_GO |
215 MDIO_USERACCESS0_WRITE_READ |
216 ((reg_num & 0x1f) << 21) |
217 ((phy_addr & 0x1f) << 16),
218 &adap_mdio->USERACCESS0);
219
220
221 while ((tmp = readl(&adap_mdio->USERACCESS0)) & MDIO_USERACCESS0_GO)
222 ;
223
224 if (tmp & MDIO_USERACCESS0_ACK) {
225 *data = tmp & 0xffff;
226 return 1;
227 }
228
229 return 0;
230}
231
232
233int davinci_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data)
234{
235
236 while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
237 ;
238
239 writel(MDIO_USERACCESS0_GO |
240 MDIO_USERACCESS0_WRITE_WRITE |
241 ((reg_num & 0x1f) << 21) |
242 ((phy_addr & 0x1f) << 16) |
243 (data & 0xffff),
244 &adap_mdio->USERACCESS0);
245
246
247 while (readl(&adap_mdio->USERACCESS0) & MDIO_USERACCESS0_GO)
248 ;
249
250 return 1;
251}
252
253
254static int gen_init_phy(int phy_addr)
255{
256 int ret = 1;
257
258 if (gen_get_link_speed(phy_addr)) {
259
260 ret = gen_get_link_speed(phy_addr);
261 }
262
263 return(ret);
264}
265
266static int gen_is_phy_connected(int phy_addr)
267{
268 u_int16_t dummy;
269
270 return davinci_eth_phy_read(phy_addr, MII_PHYSID1, &dummy);
271}
272
273static int get_active_phy(void)
274{
275 int i;
276
277 for (i = 0; i < num_phy; i++)
278 if (phy[i].get_link_speed(active_phy_addr[i]))
279 return i;
280
281 return -1;
282}
283
284static int gen_get_link_speed(int phy_addr)
285{
286 u_int16_t tmp;
287
288 if (davinci_eth_phy_read(phy_addr, MII_STATUS_REG, &tmp) &&
289 (tmp & 0x04)) {
290#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \
291 defined(CONFIG_MACH_DAVINCI_DA850_EVM)
292 davinci_eth_phy_read(phy_addr, MII_LPA, &tmp);
293
294
295 if (tmp & (LPA_100FULL | LPA_10FULL)) {
296
297 writel(EMAC_MACCONTROL_MIIEN_ENABLE |
298 EMAC_MACCONTROL_FULLDUPLEX_ENABLE,
299 &adap_emac->MACCONTROL);
300 } else {
301
302 writel(EMAC_MACCONTROL_MIIEN_ENABLE,
303 &adap_emac->MACCONTROL);
304 }
305
306 if (tmp & (LPA_100FULL | LPA_100HALF))
307 writel(readl(&adap_emac->MACCONTROL) |
308 EMAC_MACCONTROL_RMIISPEED_100,
309 &adap_emac->MACCONTROL);
310 else
311 writel(readl(&adap_emac->MACCONTROL) &
312 ~EMAC_MACCONTROL_RMIISPEED_100,
313 &adap_emac->MACCONTROL);
314#endif
315 return(1);
316 }
317
318 return(0);
319}
320
321static int gen_auto_negotiate(int phy_addr)
322{
323 u_int16_t tmp;
324 u_int16_t val;
325 unsigned long cntr = 0;
326
327 if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
328 return 0;
329
330 val = tmp | BMCR_FULLDPLX | BMCR_ANENABLE |
331 BMCR_SPEED100;
332 davinci_eth_phy_write(phy_addr, MII_BMCR, val);
333
334 if (!davinci_eth_phy_read(phy_addr, MII_ADVERTISE, &val))
335 return 0;
336
337 val |= (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL |
338 ADVERTISE_10HALF);
339 davinci_eth_phy_write(phy_addr, MII_ADVERTISE, val);
340
341 if (!davinci_eth_phy_read(phy_addr, MII_BMCR, &tmp))
342 return(0);
343
344#ifdef DAVINCI_EMAC_GIG_ENABLE
345 davinci_eth_phy_read(phy_addr, MII_CTRL1000, &val);
346 val |= PHY_1000BTCR_1000FD;
347 val &= ~PHY_1000BTCR_1000HD;
348 davinci_eth_phy_write(phy_addr, MII_CTRL1000, val);
349 davinci_eth_phy_read(phy_addr, MII_CTRL1000, &val);
350#endif
351
352
353 tmp |= BMCR_ANRESTART;
354 davinci_eth_phy_write(phy_addr, MII_BMCR, tmp);
355
356
357 do {
358 udelay(40000);
359 if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
360 return 0;
361
362 if (tmp & BMSR_ANEGCOMPLETE)
363 break;
364
365 cntr++;
366 } while (cntr < 200);
367
368 if (!davinci_eth_phy_read(phy_addr, MII_BMSR, &tmp))
369 return(0);
370
371 if (!(tmp & BMSR_ANEGCOMPLETE))
372 return(0);
373
374 return(gen_get_link_speed(phy_addr));
375}
376
377
378
379#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
380static int davinci_mii_phy_read(struct mii_dev *bus, int addr, int devad,
381 int reg)
382{
383 unsigned short value = 0;
384 int retval = davinci_eth_phy_read(addr, reg, &value);
385
386 return retval ? value : -EIO;
387}
388
389static int davinci_mii_phy_write(struct mii_dev *bus, int addr, int devad,
390 int reg, u16 value)
391{
392 return davinci_eth_phy_write(addr, reg, value) ? 0 : 1;
393}
394#endif
395
396static void __attribute__((unused)) davinci_eth_gigabit_enable(int phy_addr)
397{
398 u_int16_t data;
399
400 if (davinci_eth_phy_read(phy_addr, 0, &data)) {
401 if (data & (1 << 6)) {
402
403
404
405
406 writel(readl(&adap_emac->MACCONTROL) |
407 EMAC_MACCONTROL_GIGFORCE |
408 EMAC_MACCONTROL_GIGABIT_ENABLE,
409 &adap_emac->MACCONTROL);
410 }
411 }
412}
413
414
415static int davinci_eth_open(struct eth_device *dev, bd_t *bis)
416{
417 dv_reg_p addr;
418 u_int32_t clkdiv, cnt, mac_control;
419 uint16_t __maybe_unused lpa_val;
420 volatile emac_desc *rx_desc;
421 int index;
422
423 debug_emac("+ emac_open\n");
424
425
426 writel(1, &adap_emac->SOFTRESET);
427 while (readl(&adap_emac->SOFTRESET) != 0)
428 ;
429#if defined(DAVINCI_EMAC_VERSION2)
430 writel(1, &adap_ewrap->softrst);
431 while (readl(&adap_ewrap->softrst) != 0)
432 ;
433#else
434 writel(0, &adap_ewrap->EWCTL);
435 for (cnt = 0; cnt < 5; cnt++) {
436 clkdiv = readl(&adap_ewrap->EWCTL);
437 }
438#endif
439
440#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \
441 defined(CONFIG_MACH_DAVINCI_DA850_EVM)
442 adap_ewrap->c0rxen = adap_ewrap->c1rxen = adap_ewrap->c2rxen = 0;
443 adap_ewrap->c0txen = adap_ewrap->c1txen = adap_ewrap->c2txen = 0;
444 adap_ewrap->c0miscen = adap_ewrap->c1miscen = adap_ewrap->c2miscen = 0;
445#endif
446 rx_desc = emac_rx_desc;
447
448 writel(1, &adap_emac->TXCONTROL);
449 writel(1, &adap_emac->RXCONTROL);
450
451 davinci_eth_set_mac_addr(dev);
452
453
454 addr = &adap_emac->TX0HDP;
455 for (cnt = 0; cnt < 8; cnt++)
456 writel(0, addr++);
457
458 addr = &adap_emac->RX0HDP;
459 for (cnt = 0; cnt < 8; cnt++)
460 writel(0, addr++);
461
462
463 addr = &adap_emac->RXGOODFRAMES;
464 for(cnt = 0; cnt < EMAC_NUM_STATS; cnt++)
465 writel(0, addr++);
466
467
468 writel(0, &adap_emac->MACHASH1);
469 writel(0, &adap_emac->MACHASH2);
470
471
472 emac_rx_active_head = emac_rx_desc;
473 for (cnt = 0; cnt < EMAC_MAX_RX_BUFFERS; cnt++) {
474 rx_desc->next = BD_TO_HW((u_int32_t)(rx_desc + 1));
475 rx_desc->buffer = &emac_rx_buffers[cnt * EMAC_RXBUF_SIZE];
476 rx_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE;
477 rx_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT;
478 rx_desc++;
479 }
480
481
482 rx_desc--;
483 rx_desc->next = 0;
484 emac_rx_active_tail = rx_desc;
485 emac_rx_queue_active = 1;
486
487
488 writel(EMAC_MAX_ETHERNET_PKT_SIZE, &adap_emac->RXMAXLEN);
489 writel(0, &adap_emac->RXBUFFEROFFSET);
490
491
492
493
494
495 writel(EMAC_RXMBPENABLE_RXBROADEN, &adap_emac->RXMBPENABLE);
496
497
498 writel(1, &adap_emac->RXUNICASTSET);
499
500
501 clkdiv = CONFIG_SYS_EMAC_TI_CLKDIV;
502 writel((clkdiv & 0xff) | MDIO_CONTROL_ENABLE | MDIO_CONTROL_FAULT,
503 &adap_mdio->CONTROL);
504
505
506 udelay(1000);
507
508 index = get_active_phy();
509 if (index == -1)
510 return(0);
511
512
513 mac_control = EMAC_MACCONTROL_MIIEN_ENABLE;
514#ifdef DAVINCI_EMAC_GIG_ENABLE
515 davinci_eth_phy_read(active_phy_addr[index], MII_STAT1000, &lpa_val);
516 if (lpa_val & PHY_1000BTSR_1000FD) {
517 debug_emac("eth_open : gigabit negotiated\n");
518 mac_control |= EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
519 mac_control |= EMAC_MACCONTROL_GIGABIT_ENABLE;
520 }
521#endif
522
523 davinci_eth_phy_read(active_phy_addr[index], MII_LPA, &lpa_val);
524 if (lpa_val & (LPA_100FULL | LPA_10FULL))
525
526 mac_control |= EMAC_MACCONTROL_FULLDUPLEX_ENABLE;
527#if defined(CONFIG_SOC_DA8XX) || \
528 (defined(CONFIG_OMAP34XX) && defined(CONFIG_DRIVER_TI_EMAC_USE_RMII))
529 mac_control |= EMAC_MACCONTROL_RMIISPEED_100;
530#endif
531 writel(mac_control, &adap_emac->MACCONTROL);
532
533 writel(BD_TO_HW((u_int32_t)emac_rx_desc), &adap_emac->RX0HDP);
534
535 debug_emac("- emac_open\n");
536
537 return(1);
538}
539
540
541static void davinci_eth_ch_teardown(int ch)
542{
543 dv_reg dly = 0xff;
544 dv_reg cnt;
545
546 debug_emac("+ emac_ch_teardown\n");
547
548 if (ch == EMAC_CH_TX) {
549
550 writel(0, &adap_emac->TXTEARDOWN);
551 do {
552
553
554
555
556
557
558
559 dly--;
560 udelay(1);
561 if (dly == 0)
562 break;
563 cnt = readl(&adap_emac->TX0CP);
564 } while (cnt != 0xfffffffc);
565 writel(cnt, &adap_emac->TX0CP);
566 writel(0, &adap_emac->TX0HDP);
567 } else {
568
569 writel(0, &adap_emac->RXTEARDOWN);
570 do {
571
572
573
574
575
576
577
578 dly--;
579 udelay(1);
580 if (dly == 0)
581 break;
582 cnt = readl(&adap_emac->RX0CP);
583 } while (cnt != 0xfffffffc);
584 writel(cnt, &adap_emac->RX0CP);
585 writel(0, &adap_emac->RX0HDP);
586 }
587
588 debug_emac("- emac_ch_teardown\n");
589}
590
591
592static void davinci_eth_close(struct eth_device *dev)
593{
594 debug_emac("+ emac_close\n");
595
596 davinci_eth_ch_teardown(EMAC_CH_TX);
597 if (readl(&adap_emac->RXCONTROL) & 1)
598 davinci_eth_ch_teardown(EMAC_CH_RX);
599
600
601 writel(1, &adap_emac->SOFTRESET);
602#if defined(DAVINCI_EMAC_VERSION2)
603 writel(1, &adap_ewrap->softrst);
604#else
605 writel(0, &adap_ewrap->EWCTL);
606#endif
607
608#if defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \
609 defined(CONFIG_MACH_DAVINCI_DA850_EVM)
610 adap_ewrap->c0rxen = adap_ewrap->c1rxen = adap_ewrap->c2rxen = 0;
611 adap_ewrap->c0txen = adap_ewrap->c1txen = adap_ewrap->c2txen = 0;
612 adap_ewrap->c0miscen = adap_ewrap->c1miscen = adap_ewrap->c2miscen = 0;
613#endif
614 debug_emac("- emac_close\n");
615}
616
617static int tx_send_loop = 0;
618
619
620
621
622
623static int davinci_eth_send_packet (struct eth_device *dev,
624 void *packet, int length)
625{
626 int ret_status = -1;
627 int index;
628 tx_send_loop = 0;
629
630 index = get_active_phy();
631 if (index == -1) {
632 printf(" WARN: emac_send_packet: No link\n");
633 return (ret_status);
634 }
635
636
637 if (length < EMAC_MIN_ETHERNET_PKT_SIZE) {
638 length = EMAC_MIN_ETHERNET_PKT_SIZE;
639 }
640
641
642 emac_tx_desc->next = 0;
643 emac_tx_desc->buffer = (u_int8_t *) packet;
644 emac_tx_desc->buff_off_len = (length & 0xffff);
645 emac_tx_desc->pkt_flag_len = ((length & 0xffff) |
646 EMAC_CPPI_SOP_BIT |
647 EMAC_CPPI_OWNERSHIP_BIT |
648 EMAC_CPPI_EOP_BIT);
649
650 flush_dcache_range((unsigned long)packet,
651 (unsigned long)packet + ALIGN(length, PKTALIGN));
652
653
654 writel(BD_TO_HW((unsigned long)emac_tx_desc), &adap_emac->TX0HDP);
655
656
657 while (1) {
658 if (!phy[index].get_link_speed(active_phy_addr[index])) {
659 davinci_eth_ch_teardown (EMAC_CH_TX);
660 return (ret_status);
661 }
662
663 if (readl(&adap_emac->TXINTSTATRAW) & 0x01) {
664 ret_status = length;
665 break;
666 }
667 tx_send_loop++;
668 }
669
670 return (ret_status);
671}
672
673
674
675
676static int davinci_eth_rcv_packet (struct eth_device *dev)
677{
678 volatile emac_desc *rx_curr_desc;
679 volatile emac_desc *curr_desc;
680 volatile emac_desc *tail_desc;
681 int status, ret = -1;
682
683 rx_curr_desc = emac_rx_active_head;
684 if (!rx_curr_desc)
685 return 0;
686 status = rx_curr_desc->pkt_flag_len;
687 if ((status & EMAC_CPPI_OWNERSHIP_BIT) == 0) {
688 if (status & EMAC_CPPI_RX_ERROR_FRAME) {
689
690 printf ("WARN: emac_rcv_pkt: Error in packet\n");
691 } else {
692 unsigned long tmp = (unsigned long)rx_curr_desc->buffer;
693 unsigned short len =
694 rx_curr_desc->buff_off_len & 0xffff;
695
696 invalidate_dcache_range(tmp, tmp + ALIGN(len, PKTALIGN));
697 net_process_received_packet(rx_curr_desc->buffer, len);
698 ret = len;
699 }
700
701
702 writel(BD_TO_HW((ulong)rx_curr_desc), &adap_emac->RX0CP);
703 curr_desc = rx_curr_desc;
704 emac_rx_active_head =
705 (volatile emac_desc *) (HW_TO_BD(rx_curr_desc->next));
706
707 if (status & EMAC_CPPI_EOQ_BIT) {
708 if (emac_rx_active_head) {
709 writel(BD_TO_HW((ulong)emac_rx_active_head),
710 &adap_emac->RX0HDP);
711 } else {
712 emac_rx_queue_active = 0;
713 printf ("INFO:emac_rcv_packet: RX Queue not active\n");
714 }
715 }
716
717
718 rx_curr_desc->buff_off_len = EMAC_MAX_ETHERNET_PKT_SIZE;
719 rx_curr_desc->pkt_flag_len = EMAC_CPPI_OWNERSHIP_BIT;
720 rx_curr_desc->next = 0;
721
722 if (emac_rx_active_head == 0) {
723 printf ("INFO: emac_rcv_pkt: active queue head = 0\n");
724 emac_rx_active_head = curr_desc;
725 emac_rx_active_tail = curr_desc;
726 if (emac_rx_queue_active != 0) {
727 writel(BD_TO_HW((ulong)emac_rx_active_head),
728 &adap_emac->RX0HDP);
729 printf ("INFO: emac_rcv_pkt: active queue head = 0, HDP fired\n");
730 emac_rx_queue_active = 1;
731 }
732 } else {
733 tail_desc = emac_rx_active_tail;
734 emac_rx_active_tail = curr_desc;
735 tail_desc->next = BD_TO_HW((ulong) curr_desc);
736 status = tail_desc->pkt_flag_len;
737 if (status & EMAC_CPPI_EOQ_BIT) {
738 writel(BD_TO_HW((ulong)curr_desc),
739 &adap_emac->RX0HDP);
740 status &= ~EMAC_CPPI_EOQ_BIT;
741 tail_desc->pkt_flag_len = status;
742 }
743 }
744 return (ret);
745 }
746 return (0);
747}
748
749
750
751
752
753
754int davinci_emac_initialize(void)
755{
756 u_int32_t phy_id;
757 u_int16_t tmp;
758 int i;
759 int ret;
760 struct eth_device *dev;
761
762 dev = malloc(sizeof *dev);
763
764 if (dev == NULL)
765 return -1;
766
767 memset(dev, 0, sizeof *dev);
768 strcpy(dev->name, "DaVinci-EMAC");
769
770 dev->iobase = 0;
771 dev->init = davinci_eth_open;
772 dev->halt = davinci_eth_close;
773 dev->send = davinci_eth_send_packet;
774 dev->recv = davinci_eth_rcv_packet;
775 dev->write_hwaddr = davinci_eth_set_mac_addr;
776
777 eth_register(dev);
778
779 davinci_eth_mdio_enable();
780
781
782 udelay(5000);
783
784 for (i = 0; i < 256; i++) {
785 if (readl(&adap_mdio->ALIVE))
786 break;
787 udelay(1000);
788 }
789
790 if (i >= 256) {
791 printf("No ETH PHY detected!!!\n");
792 return(0);
793 }
794
795
796 ret = davinci_eth_phy_detect();
797 if (!ret)
798 return(0);
799 else
800 debug_emac(" %d ETH PHY detected\n", ret);
801
802
803 for (i = 0; i < num_phy; i++) {
804 if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID1,
805 &tmp)) {
806 active_phy_addr[i] = 0xff;
807 continue;
808 }
809
810 phy_id = (tmp << 16) & 0xffff0000;
811
812 if (!davinci_eth_phy_read(active_phy_addr[i], MII_PHYSID2,
813 &tmp)) {
814 active_phy_addr[i] = 0xff;
815 continue;
816 }
817
818 phy_id |= tmp & 0x0000ffff;
819
820 switch (phy_id) {
821#ifdef PHY_KSZ8873
822 case PHY_KSZ8873:
823 sprintf(phy[i].name, "KSZ8873 @ 0x%02x",
824 active_phy_addr[i]);
825 phy[i].init = ksz8873_init_phy;
826 phy[i].is_phy_connected = ksz8873_is_phy_connected;
827 phy[i].get_link_speed = ksz8873_get_link_speed;
828 phy[i].auto_negotiate = ksz8873_auto_negotiate;
829 break;
830#endif
831#ifdef PHY_LXT972
832 case PHY_LXT972:
833 sprintf(phy[i].name, "LXT972 @ 0x%02x",
834 active_phy_addr[i]);
835 phy[i].init = lxt972_init_phy;
836 phy[i].is_phy_connected = lxt972_is_phy_connected;
837 phy[i].get_link_speed = lxt972_get_link_speed;
838 phy[i].auto_negotiate = lxt972_auto_negotiate;
839 break;
840#endif
841#ifdef PHY_DP83848
842 case PHY_DP83848:
843 sprintf(phy[i].name, "DP83848 @ 0x%02x",
844 active_phy_addr[i]);
845 phy[i].init = dp83848_init_phy;
846 phy[i].is_phy_connected = dp83848_is_phy_connected;
847 phy[i].get_link_speed = dp83848_get_link_speed;
848 phy[i].auto_negotiate = dp83848_auto_negotiate;
849 break;
850#endif
851#ifdef PHY_ET1011C
852 case PHY_ET1011C:
853 sprintf(phy[i].name, "ET1011C @ 0x%02x",
854 active_phy_addr[i]);
855 phy[i].init = gen_init_phy;
856 phy[i].is_phy_connected = gen_is_phy_connected;
857 phy[i].get_link_speed = et1011c_get_link_speed;
858 phy[i].auto_negotiate = gen_auto_negotiate;
859 break;
860#endif
861 default:
862 sprintf(phy[i].name, "GENERIC @ 0x%02x",
863 active_phy_addr[i]);
864 phy[i].init = gen_init_phy;
865 phy[i].is_phy_connected = gen_is_phy_connected;
866 phy[i].get_link_speed = gen_get_link_speed;
867 phy[i].auto_negotiate = gen_auto_negotiate;
868 }
869
870 debug("Ethernet PHY: %s\n", phy[i].name);
871
872 int retval;
873 struct mii_dev *mdiodev = mdio_alloc();
874 if (!mdiodev)
875 return -ENOMEM;
876 strncpy(mdiodev->name, phy[i].name, MDIO_NAME_LEN);
877 mdiodev->read = davinci_mii_phy_read;
878 mdiodev->write = davinci_mii_phy_write;
879
880 retval = mdio_register(mdiodev);
881 if (retval < 0)
882 return retval;
883#ifdef DAVINCI_EMAC_GIG_ENABLE
884#define PHY_CONF_REG 22
885
886 davinci_eth_phy_read(active_phy_addr[i], PHY_CONF_REG, &tmp);
887 tmp |= PHY_CONF_TXCLKEN;
888 davinci_eth_phy_write(active_phy_addr[i], PHY_CONF_REG, tmp);
889 davinci_eth_phy_read(active_phy_addr[i], PHY_CONF_REG, &tmp);
890#endif
891 }
892
893#if defined(CONFIG_TI816X) || (defined(CONFIG_DRIVER_TI_EMAC_USE_RMII) && \
894 defined(CONFIG_MACH_DAVINCI_DA850_EVM) && \
895 !defined(CONFIG_DRIVER_TI_EMAC_RMII_NO_NEGOTIATE))
896 for (i = 0; i < num_phy; i++) {
897 if (phy[i].is_phy_connected(i))
898 phy[i].auto_negotiate(i);
899 }
900#endif
901 return(1);
902}
903
