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TsiChungLiew777d1ab2008-01-15 14:00:25 -06001/*
2 * (C) Copyright 2000-2004
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2007 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27#include <common.h>
28#include <malloc.h>
29#include <command.h>
30#include <config.h>
31#include <net.h>
32#include <miiphy.h>
33
TsiChungLiew777d1ab2008-01-15 14:00:25 -060034#undef ET_DEBUG
35#undef MII_DEBUG
36
37/* Ethernet Transmit and Receive Buffers */
38#define DBUF_LENGTH 1520
39#define PKT_MAXBUF_SIZE 1518
40#define PKT_MINBUF_SIZE 64
41#define PKT_MAXBLR_SIZE 1536
42#define LAST_PKTBUFSRX PKTBUFSRX - 1
43#define BD_ENET_RX_W_E (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY)
44#define BD_ENET_TX_RDY_LST (BD_ENET_TX_READY | BD_ENET_TX_LAST)
45#define FIFO_ERRSTAT (FIFO_STAT_RXW | FIFO_STAT_UF | FIFO_STAT_OF)
46
47/* RxBD bits definitions */
48#define BD_ENET_RX_ERR (BD_ENET_RX_LG | BD_ENET_RX_NO | BD_ENET_RX_CR | \
49 BD_ENET_RX_OV | BD_ENET_RX_TR)
50
TsiChungLiew777d1ab2008-01-15 14:00:25 -060051#include <asm/immap.h>
52#include <asm/fsl_mcdmafec.h>
53
54#include "MCD_dma.h"
55
56DECLARE_GLOBAL_DATA_PTR;
57
58struct fec_info_dma fec_info[] = {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020059#ifdef CONFIG_SYS_FEC0_IOBASE
TsiChungLiew777d1ab2008-01-15 14:00:25 -060060 {
61 0, /* index */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020062 CONFIG_SYS_FEC0_IOBASE, /* io base */
63 CONFIG_SYS_FEC0_PINMUX, /* gpio pin muxing */
64 CONFIG_SYS_FEC0_MIIBASE, /* mii base */
TsiChungLiew777d1ab2008-01-15 14:00:25 -060065 -1, /* phy_addr */
66 0, /* duplex and speed */
67 0, /* phy name */
68 0, /* phyname init */
69 0, /* RX BD */
70 0, /* TX BD */
71 0, /* rx Index */
72 0, /* tx Index */
73 0, /* tx buffer */
74 0, /* initialized flag */
75 (struct fec_info_dma *)-1, /* next */
76 FEC0_RX_TASK, /* rxTask */
77 FEC0_TX_TASK, /* txTask */
78 FEC0_RX_PRIORITY, /* rxPri */
79 FEC0_TX_PRIORITY, /* txPri */
80 FEC0_RX_INIT, /* rxInit */
81 FEC0_TX_INIT, /* txInit */
82 0, /* usedTbdIndex */
83 0, /* cleanTbdNum */
84 },
85#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020086#ifdef CONFIG_SYS_FEC1_IOBASE
TsiChungLiew777d1ab2008-01-15 14:00:25 -060087 {
88 1, /* index */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020089 CONFIG_SYS_FEC1_IOBASE, /* io base */
90 CONFIG_SYS_FEC1_PINMUX, /* gpio pin muxing */
91 CONFIG_SYS_FEC1_MIIBASE, /* mii base */
TsiChungLiew777d1ab2008-01-15 14:00:25 -060092 -1, /* phy_addr */
93 0, /* duplex and speed */
94 0, /* phy name */
95 0, /* phy name init */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020096#ifdef CONFIG_SYS_DMA_USE_INTSRAM
TsiChung Liew429be272008-08-21 23:55:11 +000097 (cbd_t *)DBUF_LENGTH, /* RX BD */
TsiChung Liewf32f7fe2008-04-30 12:11:19 -050098#else
TsiChungLiew777d1ab2008-01-15 14:00:25 -060099 0, /* RX BD */
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500100#endif
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600101 0, /* TX BD */
102 0, /* rx Index */
103 0, /* tx Index */
104 0, /* tx buffer */
105 0, /* initialized flag */
106 (struct fec_info_dma *)-1, /* next */
107 FEC1_RX_TASK, /* rxTask */
108 FEC1_TX_TASK, /* txTask */
109 FEC1_RX_PRIORITY, /* rxPri */
110 FEC1_TX_PRIORITY, /* txPri */
111 FEC1_RX_INIT, /* rxInit */
112 FEC1_TX_INIT, /* txInit */
113 0, /* usedTbdIndex */
114 0, /* cleanTbdNum */
115 }
116#endif
117};
118
Joe Hershberger10cbe3b2012-05-22 18:36:19 +0000119static int fec_send(struct eth_device *dev, void *packet, int length);
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600120static int fec_recv(struct eth_device *dev);
121static int fec_init(struct eth_device *dev, bd_t * bd);
122static void fec_halt(struct eth_device *dev);
123
124#ifdef ET_DEBUG
125static void dbg_fec_regs(struct eth_device *dev)
126{
127 struct fec_info_dma *info = dev->priv;
128 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
129
130 printf("=====\n");
131 printf("ievent %x - %x\n", (int)&fecp->eir, fecp->eir);
132 printf("imask %x - %x\n", (int)&fecp->eimr, fecp->eimr);
133 printf("ecntrl %x - %x\n", (int)&fecp->ecr, fecp->ecr);
134 printf("mii_mframe %x - %x\n", (int)&fecp->mmfr, fecp->mmfr);
135 printf("mii_speed %x - %x\n", (int)&fecp->mscr, fecp->mscr);
136 printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc);
137 printf("r_cntrl %x - %x\n", (int)&fecp->rcr, fecp->rcr);
138 printf("r hash %x - %x\n", (int)&fecp->rhr, fecp->rhr);
139 printf("x_cntrl %x - %x\n", (int)&fecp->tcr, fecp->tcr);
140 printf("padr_l %x - %x\n", (int)&fecp->palr, fecp->palr);
141 printf("padr_u %x - %x\n", (int)&fecp->paur, fecp->paur);
142 printf("op_pause %x - %x\n", (int)&fecp->opd, fecp->opd);
143 printf("iadr_u %x - %x\n", (int)&fecp->iaur, fecp->iaur);
144 printf("iadr_l %x - %x\n", (int)&fecp->ialr, fecp->ialr);
145 printf("gadr_u %x - %x\n", (int)&fecp->gaur, fecp->gaur);
146 printf("gadr_l %x - %x\n", (int)&fecp->galr, fecp->galr);
147 printf("x_wmrk %x - %x\n", (int)&fecp->tfwr, fecp->tfwr);
148 printf("r_fdata %x - %x\n", (int)&fecp->rfdr, fecp->rfdr);
149 printf("r_fstat %x - %x\n", (int)&fecp->rfsr, fecp->rfsr);
150 printf("r_fctrl %x - %x\n", (int)&fecp->rfcr, fecp->rfcr);
151 printf("r_flrfp %x - %x\n", (int)&fecp->rlrfp, fecp->rlrfp);
152 printf("r_flwfp %x - %x\n", (int)&fecp->rlwfp, fecp->rlwfp);
153 printf("r_frfar %x - %x\n", (int)&fecp->rfar, fecp->rfar);
154 printf("r_frfrp %x - %x\n", (int)&fecp->rfrp, fecp->rfrp);
155 printf("r_frfwp %x - %x\n", (int)&fecp->rfwp, fecp->rfwp);
156 printf("t_fdata %x - %x\n", (int)&fecp->tfdr, fecp->tfdr);
157 printf("t_fstat %x - %x\n", (int)&fecp->tfsr, fecp->tfsr);
158 printf("t_fctrl %x - %x\n", (int)&fecp->tfcr, fecp->tfcr);
159 printf("t_flrfp %x - %x\n", (int)&fecp->tlrfp, fecp->tlrfp);
160 printf("t_flwfp %x - %x\n", (int)&fecp->tlwfp, fecp->tlwfp);
161 printf("t_ftfar %x - %x\n", (int)&fecp->tfar, fecp->tfar);
162 printf("t_ftfrp %x - %x\n", (int)&fecp->tfrp, fecp->tfrp);
163 printf("t_ftfwp %x - %x\n", (int)&fecp->tfwp, fecp->tfwp);
164 printf("frst %x - %x\n", (int)&fecp->frst, fecp->frst);
165 printf("ctcwr %x - %x\n", (int)&fecp->ctcwr, fecp->ctcwr);
166}
167#endif
168
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500169static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd,
170 int dup_spd)
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600171{
172 if ((dup_spd >> 16) == FULL) {
173 /* Set maximum frame length */
174 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE |
175 FEC_RCR_PROM | 0x100;
176 fecp->tcr = FEC_TCR_FDEN;
177 } else {
178 /* Half duplex mode */
179 fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) |
180 FEC_RCR_MII_MODE | FEC_RCR_DRT;
181 fecp->tcr &= ~FEC_TCR_FDEN;
182 }
183
184 if ((dup_spd & 0xFFFF) == _100BASET) {
185#ifdef MII_DEBUG
186 printf("100Mbps\n");
187#endif
188 bd->bi_ethspeed = 100;
189 } else {
190#ifdef MII_DEBUG
191 printf("10Mbps\n");
192#endif
193 bd->bi_ethspeed = 10;
194 }
195}
196
Joe Hershberger10cbe3b2012-05-22 18:36:19 +0000197static int fec_send(struct eth_device *dev, void *packet, int length)
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600198{
199 struct fec_info_dma *info = dev->priv;
200 cbd_t *pTbd, *pUsedTbd;
201 u16 phyStatus;
202
Mike Frysinger8ef583a2010-12-23 15:40:12 -0500203 miiphy_read(dev->name, info->phy_addr, MII_BMSR, &phyStatus);
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600204
205 /* process all the consumed TBDs */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200206 while (info->cleanTbdNum < CONFIG_SYS_TX_ETH_BUFFER) {
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600207 pUsedTbd = &info->txbd[info->usedTbdIdx];
208 if (pUsedTbd->cbd_sc & BD_ENET_TX_READY) {
209#ifdef ET_DEBUG
210 printf("Cannot clean TBD %d, in use\n",
211 info->cleanTbdNum);
212#endif
213 return 0;
214 }
215
216 /* clean this buffer descriptor */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200217 if (info->usedTbdIdx == (CONFIG_SYS_TX_ETH_BUFFER - 1))
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600218 pUsedTbd->cbd_sc = BD_ENET_TX_WRAP;
219 else
220 pUsedTbd->cbd_sc = 0;
221
222 /* update some indeces for a correct handling of the TBD ring */
223 info->cleanTbdNum++;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200224 info->usedTbdIdx = (info->usedTbdIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER;
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600225 }
226
227 /* Check for valid length of data. */
228 if ((length > 1500) || (length <= 0)) {
229 return -1;
230 }
231
232 /* Check the number of vacant TxBDs. */
233 if (info->cleanTbdNum < 1) {
234 printf("No available TxBDs ...\n");
235 return -1;
236 }
237
238 /* Get the first TxBD to send the mac header */
239 pTbd = &info->txbd[info->txIdx];
240 pTbd->cbd_datlen = length;
241 pTbd->cbd_bufaddr = (u32) packet;
242 pTbd->cbd_sc |= BD_ENET_TX_LAST | BD_ENET_TX_TC | BD_ENET_TX_READY;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200243 info->txIdx = (info->txIdx + 1) % CONFIG_SYS_TX_ETH_BUFFER;
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600244
245 /* Enable DMA transmit task */
246 MCD_continDma(info->txTask);
247
248 info->cleanTbdNum -= 1;
249
250 /* wait until frame is sent . */
251 while (pTbd->cbd_sc & BD_ENET_TX_READY) {
252 udelay(10);
253 }
254
255 return (int)(info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS);
256}
257
258static int fec_recv(struct eth_device *dev)
259{
260 struct fec_info_dma *info = dev->priv;
261 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
262
263 cbd_t *pRbd = &info->rxbd[info->rxIdx];
264 u32 ievent;
265 int frame_length, len = 0;
266
267 /* Check if any critical events have happened */
268 ievent = fecp->eir;
269 if (ievent != 0) {
270 fecp->eir = ievent;
271
272 if (ievent & (FEC_EIR_BABT | FEC_EIR_TXERR | FEC_EIR_RXERR)) {
273 printf("fec_recv: error\n");
274 fec_halt(dev);
275 fec_init(dev, NULL);
276 return 0;
277 }
278
279 if (ievent & FEC_EIR_HBERR) {
280 /* Heartbeat error */
281 fecp->tcr |= FEC_TCR_GTS;
282 }
283
284 if (ievent & FEC_EIR_GRA) {
285 /* Graceful stop complete */
286 if (fecp->tcr & FEC_TCR_GTS) {
287 printf("fec_recv: tcr_gts\n");
288 fec_halt(dev);
289 fecp->tcr &= ~FEC_TCR_GTS;
290 fec_init(dev, NULL);
291 }
292 }
293 }
294
295 if (!(pRbd->cbd_sc & BD_ENET_RX_EMPTY)) {
296 if ((pRbd->cbd_sc & BD_ENET_RX_LAST)
297 && !(pRbd->cbd_sc & BD_ENET_RX_ERR)
298 && ((pRbd->cbd_datlen - 4) > 14)) {
299
300 /* Get buffer address and size */
301 frame_length = pRbd->cbd_datlen - 4;
302
303 /* Fill the buffer and pass it to upper layers */
Joe Hershberger10cbe3b2012-05-22 18:36:19 +0000304 NetReceive((uchar *)pRbd->cbd_bufaddr, frame_length);
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600305 len = frame_length;
306 }
307
308 /* Reset buffer descriptor as empty */
309 if ((info->rxIdx) == (PKTBUFSRX - 1))
310 pRbd->cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
311 else
312 pRbd->cbd_sc = BD_ENET_RX_EMPTY;
313
314 pRbd->cbd_datlen = PKTSIZE_ALIGN;
315
316 /* Now, we have an empty RxBD, restart the DMA receive task */
317 MCD_continDma(info->rxTask);
318
319 /* Increment BD count */
320 info->rxIdx = (info->rxIdx + 1) % PKTBUFSRX;
321 }
322
323 return len;
324}
325
326static void fec_set_hwaddr(volatile fecdma_t * fecp, u8 * mac)
327{
328 u8 currByte; /* byte for which to compute the CRC */
329 int byte; /* loop - counter */
330 int bit; /* loop - counter */
331 u32 crc = 0xffffffff; /* initial value */
332
333 for (byte = 0; byte < 6; byte++) {
334 currByte = mac[byte];
335 for (bit = 0; bit < 8; bit++) {
336 if ((currByte & 0x01) ^ (crc & 0x01)) {
337 crc >>= 1;
338 crc = crc ^ 0xedb88320;
339 } else {
340 crc >>= 1;
341 }
342 currByte >>= 1;
343 }
344 }
345
346 crc = crc >> 26;
347
348 /* Set individual hash table register */
349 if (crc >= 32) {
350 fecp->ialr = (1 << (crc - 32));
351 fecp->iaur = 0;
352 } else {
353 fecp->ialr = 0;
354 fecp->iaur = (1 << crc);
355 }
356
357 /* Set physical address */
358 fecp->palr = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
359 fecp->paur = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
360
361 /* Clear multicast address hash table */
362 fecp->gaur = 0;
363 fecp->galr = 0;
364}
365
366static int fec_init(struct eth_device *dev, bd_t * bd)
367{
368 struct fec_info_dma *info = dev->priv;
369 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
370 int i;
Mike Frysingerd3f87142009-02-11 19:01:26 -0500371 uchar enetaddr[6];
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600372
373#ifdef ET_DEBUG
374 printf("fec_init: iobase 0x%08x ...\n", info->iobase);
375#endif
376
377 fecpin_setclear(dev, 1);
378
379 fec_halt(dev);
380
381#if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200382 defined (CONFIG_SYS_DISCOVER_PHY)
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600383
384 mii_init();
385
386 set_fec_duplex_speed(fecp, bd, info->dup_spd);
387#else
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200388#ifndef CONFIG_SYS_DISCOVER_PHY
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600389 set_fec_duplex_speed(fecp, bd, (FECDUPLEX << 16) | FECSPEED);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200390#endif /* ifndef CONFIG_SYS_DISCOVER_PHY */
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600391#endif /* CONFIG_CMD_MII || CONFIG_MII */
392
393 /* We use strictly polling mode only */
394 fecp->eimr = 0;
395
396 /* Clear any pending interrupt */
397 fecp->eir = 0xffffffff;
398
399 /* Set station address */
Mike Frysingerd3f87142009-02-11 19:01:26 -0500400 if ((u32) fecp == CONFIG_SYS_FEC0_IOBASE)
401 eth_getenv_enetaddr("ethaddr", enetaddr);
402 else
403 eth_getenv_enetaddr("eth1addr", enetaddr);
404 fec_set_hwaddr(fecp, enetaddr);
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600405
406 /* Set Opcode/Pause Duration Register */
407 fecp->opd = 0x00010020;
408
409 /* Setup Buffers and Buffer Desriptors */
410 info->rxIdx = 0;
411 info->txIdx = 0;
412
413 /* Setup Receiver Buffer Descriptors (13.14.24.18)
414 * Settings: Empty, Wrap */
415 for (i = 0; i < PKTBUFSRX; i++) {
416 info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
417 info->rxbd[i].cbd_datlen = PKTSIZE_ALIGN;
418 info->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
419 }
420 info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
421
422 /* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
423 * Settings: Last, Tx CRC */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200424 for (i = 0; i < CONFIG_SYS_TX_ETH_BUFFER; i++) {
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600425 info->txbd[i].cbd_sc = 0;
426 info->txbd[i].cbd_datlen = 0;
427 info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]);
428 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200429 info->txbd[CONFIG_SYS_TX_ETH_BUFFER - 1].cbd_sc |= BD_ENET_TX_WRAP;
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600430
431 info->usedTbdIdx = 0;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200432 info->cleanTbdNum = CONFIG_SYS_TX_ETH_BUFFER;
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600433
434 /* Set Rx FIFO alarm and granularity value */
435 fecp->rfcr = 0x0c000000;
436 fecp->rfar = 0x0000030c;
437
438 /* Set Tx FIFO granularity value */
439 fecp->tfcr = FIFO_CTRL_FRAME | FIFO_CTRL_GR(6) | 0x00040000;
440 fecp->tfar = 0x00000080;
441
442 fecp->tfwr = 0x2;
443 fecp->ctcwr = 0x03000000;
444
445 /* Enable DMA receive task */
446 MCD_startDma(info->rxTask, /* Dma channel */
447 (s8 *) info->rxbd, /*Source Address */
448 0, /* Source increment */
449 (s8 *) (&fecp->rfdr), /* dest */
450 4, /* dest increment */
451 0, /* DMA size */
452 4, /* xfer size */
453 info->rxInit, /* initiator */
454 info->rxPri, /* priority */
455 (MCD_FECRX_DMA | MCD_TT_FLAGS_DEF), /* Flags */
456 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */
457 );
458
459 /* Enable DMA tx task with no ready buffer descriptors */
460 MCD_startDma(info->txTask, /* Dma channel */
461 (s8 *) info->txbd, /*Source Address */
462 0, /* Source increment */
463 (s8 *) (&fecp->tfdr), /* dest */
464 4, /* dest incr */
465 0, /* DMA size */
466 4, /* xfer size */
467 info->txInit, /* initiator */
468 info->txPri, /* priority */
469 (MCD_FECTX_DMA | MCD_TT_FLAGS_DEF), /* Flags */
470 (MCD_NO_CSUM | MCD_NO_BYTE_SWAP) /* Function description */
471 );
472
473 /* Now enable the transmit and receive processing */
474 fecp->ecr |= FEC_ECR_ETHER_EN;
475
476 return 1;
477}
478
479static void fec_halt(struct eth_device *dev)
480{
481 struct fec_info_dma *info = dev->priv;
482 volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
483 int counter = 0xffff;
484
485 /* issue graceful stop command to the FEC transmitter if necessary */
486 fecp->tcr |= FEC_TCR_GTS;
487
488 /* wait for graceful stop to register */
489 while ((counter--) && (!(fecp->eir & FEC_EIR_GRA))) ;
490
491 /* Disable DMA tasks */
492 MCD_killDma(info->txTask);
493 MCD_killDma(info->rxTask);;
494
495 /* Disable the Ethernet Controller */
496 fecp->ecr &= ~FEC_ECR_ETHER_EN;
497
498 /* Clear FIFO status registers */
499 fecp->rfsr &= FIFO_ERRSTAT;
500 fecp->tfsr &= FIFO_ERRSTAT;
501
502 fecp->frst = 0x01000000;
503
504 /* Issue a reset command to the FEC chip */
505 fecp->ecr |= FEC_ECR_RESET;
506
507 /* wait at least 20 clock cycles */
508 udelay(10000);
509
510#ifdef ET_DEBUG
511 printf("Ethernet task stopped\n");
512#endif
513}
514
515int mcdmafec_initialize(bd_t * bis)
516{
517 struct eth_device *dev;
518 int i;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200519#ifdef CONFIG_SYS_DMA_USE_INTSRAM
520 u32 tmp = CONFIG_SYS_INTSRAM + 0x2000;
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500521#endif
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600522
523 for (i = 0; i < sizeof(fec_info) / sizeof(fec_info[0]); i++) {
524
525 dev =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200526 (struct eth_device *)memalign(CONFIG_SYS_CACHELINE_SIZE,
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600527 sizeof *dev);
528 if (dev == NULL)
529 hang();
530
531 memset(dev, 0, sizeof(*dev));
532
533 sprintf(dev->name, "FEC%d", fec_info[i].index);
534
535 dev->priv = &fec_info[i];
536 dev->init = fec_init;
537 dev->halt = fec_halt;
538 dev->send = fec_send;
539 dev->recv = fec_recv;
540
541 /* setup Receive and Transmit buffer descriptor */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200542#ifdef CONFIG_SYS_DMA_USE_INTSRAM
TsiChung Liew429be272008-08-21 23:55:11 +0000543 fec_info[i].rxbd = (cbd_t *)((u32)fec_info[i].rxbd + tmp);
544 tmp = (u32)fec_info[i].rxbd;
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500545 fec_info[i].txbd =
TsiChung Liew429be272008-08-21 23:55:11 +0000546 (cbd_t *)((u32)fec_info[i].txbd + tmp +
547 (PKTBUFSRX * sizeof(cbd_t)));
548 tmp = (u32)fec_info[i].txbd;
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500549 fec_info[i].txbuf =
TsiChung Liew429be272008-08-21 23:55:11 +0000550 (char *)((u32)fec_info[i].txbuf + tmp +
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200551 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t)));
TsiChung Liew429be272008-08-21 23:55:11 +0000552 tmp = (u32)fec_info[i].txbuf;
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500553#else
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600554 fec_info[i].rxbd =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200555 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE,
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600556 (PKTBUFSRX * sizeof(cbd_t)));
557 fec_info[i].txbd =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200558 (cbd_t *) memalign(CONFIG_SYS_CACHELINE_SIZE,
559 (CONFIG_SYS_TX_ETH_BUFFER * sizeof(cbd_t)));
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600560 fec_info[i].txbuf =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200561 (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, DBUF_LENGTH);
TsiChung Liewf32f7fe2008-04-30 12:11:19 -0500562#endif
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600563
564#ifdef ET_DEBUG
565 printf("rxbd %x txbd %x\n",
566 (int)fec_info[i].rxbd, (int)fec_info[i].txbd);
567#endif
568
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200569 fec_info[i].phy_name = (char *)memalign(CONFIG_SYS_CACHELINE_SIZE, 32);
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600570
571 eth_register(dev);
572
573#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
574 miiphy_register(dev->name,
575 mcffec_miiphy_read, mcffec_miiphy_write);
576#endif
577
578 if (i > 0)
579 fec_info[i - 1].next = &fec_info[i];
580 }
581 fec_info[i - 1].next = &fec_info[0];
582
583 /* default speed */
584 bis->bi_ethspeed = 10;
585
Ben Warrenb31da882008-08-26 22:12:36 -0700586 return 0;
TsiChungLiew777d1ab2008-01-15 14:00:25 -0600587}