2 * MPC8560 FCC Fast Ethernet
3 * Copyright (c) 2003 Motorola,Inc.
4 * Xianghua Xiao, (X.Xiao@motorola.com)
6 * Copyright (c) 2000 MontaVista Software, Inc. Dan Malek (dmalek@jlc.net)
8 * (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 * MPC8560 FCC Fast Ethernet
32 * Basic ET HW initialization and packet RX/TX routines
34 * This code will not perform the IO port configuration. This should be
35 * done in the iop_conf_t structure specific for the board.
38 * add a PHY driver to do the negotiation
39 * reflect negotiation results in FPSMR
40 * look for ways to configure the board specific stuff elsewhere, eg.
41 * config_xxx.h or the board directory
46 #include <asm/cpm_85xx.h>
51 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
55 #if defined(CONFIG_ETHER_ON_FCC) && defined(CONFIG_CMD_NET) && \
56 defined(CONFIG_NET_MULTI)
58 static struct ether_fcc_info_s
62 ulong cpm_cr_enet_sblock;
63 ulong cpm_cr_enet_page;
69 #ifdef CONFIG_ETHER_ON_FCC1
75 CONFIG_SYS_CMXFCR_MASK1,
76 CONFIG_SYS_CMXFCR_VALUE1
80 #ifdef CONFIG_ETHER_ON_FCC2
86 CONFIG_SYS_CMXFCR_MASK2,
87 CONFIG_SYS_CMXFCR_VALUE2
91 #ifdef CONFIG_ETHER_ON_FCC3
97 CONFIG_SYS_CMXFCR_MASK3,
98 CONFIG_SYS_CMXFCR_VALUE3
103 /*---------------------------------------------------------------------*/
105 /* Maximum input DMA size. Must be a should(?) be a multiple of 4. */
106 #define PKT_MAXDMA_SIZE 1520
108 /* The FCC stores dest/src/type, data, and checksum for receive packets. */
109 #define PKT_MAXBUF_SIZE 1518
110 #define PKT_MINBUF_SIZE 64
112 /* Maximum input buffer size. Must be a multiple of 32. */
113 #define PKT_MAXBLR_SIZE 1536
115 #define TOUT_LOOP 1000000
119 static uint rxIdx; /* index of the current RX buffer */
120 static uint txIdx; /* index of the current TX buffer */
123 * FCC Ethernet Tx and Rx buffer descriptors.
124 * Provide for Double Buffering
125 * Note: PKTBUFSRX is defined in net.h
128 typedef volatile struct rtxbd {
129 cbd_t rxbd[PKTBUFSRX];
130 cbd_t txbd[TX_BUF_CNT];
133 /* Good news: the FCC supports external BDs! */
135 static RTXBD rtx __attribute__ ((aligned(8)));
137 #error "rtx must be 64-bit aligned"
142 static int fec_send(struct eth_device* dev, volatile void *packet, int length)
148 printf("fec: bad packet size: %d\n", length);
152 for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
153 if (i >= TOUT_LOOP) {
154 printf("fec: tx buffer not ready\n");
159 rtx.txbd[txIdx].cbd_bufaddr = (uint)packet;
160 rtx.txbd[txIdx].cbd_datlen = length;
161 rtx.txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST | \
162 BD_ENET_TX_TC | BD_ENET_TX_PAD);
164 for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
165 if (i >= TOUT_LOOP) {
166 printf("fec: tx error\n");
172 printf("cycles: 0x%x txIdx=0x%04x status: 0x%04x\n", i, txIdx,rtx.txbd[txIdx].cbd_sc);
173 printf("packets at 0x%08x, length_in_bytes=0x%x\n",(uint)packet,length);
174 for(i=0;i<(length/16 + 1);i++) {
175 printf("%08x %08x %08x %08x\n",*((uint *)rtx.txbd[txIdx].cbd_bufaddr+i*4),\
176 *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 1),*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 2), \
177 *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 3));
181 /* return only status bits */
182 result = rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
183 txIdx = (txIdx + 1) % TX_BUF_CNT;
189 static int fec_recv(struct eth_device* dev)
195 if (rtx.rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
197 break; /* nothing received - leave for() loop */
199 length = rtx.rxbd[rxIdx].cbd_datlen;
201 if (rtx.rxbd[rxIdx].cbd_sc & 0x003f) {
202 printf("fec: rx error %04x\n", rtx.rxbd[rxIdx].cbd_sc);
205 /* Pass the packet up to the protocol layers. */
206 NetReceive(NetRxPackets[rxIdx], length - 4);
210 /* Give the buffer back to the FCC. */
211 rtx.rxbd[rxIdx].cbd_datlen = 0;
213 /* wrap around buffer index when necessary */
214 if ((rxIdx + 1) >= PKTBUFSRX) {
215 rtx.rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
219 rtx.rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
227 static int fec_init(struct eth_device* dev, bd_t *bis)
229 struct ether_fcc_info_s * info = dev->priv;
231 volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
232 volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
233 fcc_enet_t *pram_ptr;
234 unsigned long mem_addr;
240 /* 28.9 - (1-2): ioports have been set up already */
242 /* 28.9 - (3): connect FCC's tx and rx clocks */
243 cpm->im_cpm_mux.cmxuar = 0; /* ATM */
244 cpm->im_cpm_mux.cmxfcr = (cpm->im_cpm_mux.cmxfcr & ~info->cmxfcr_mask) |
247 /* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, set Mode Ethernet */
248 if(info->ether_index == 0) {
249 cpm->im_cpm_fcc1.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
250 } else if (info->ether_index == 1) {
251 cpm->im_cpm_fcc2.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
252 } else if (info->ether_index == 2) {
253 cpm->im_cpm_fcc3.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
256 /* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet,MII */
257 if(info->ether_index == 0) {
258 cpm->im_cpm_fcc1.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
259 } else if (info->ether_index == 1){
260 cpm->im_cpm_fcc2.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
261 } else if (info->ether_index == 2){
262 cpm->im_cpm_fcc3.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
265 /* 28.9 - (6): FDSR: Ethernet Syn */
266 if(info->ether_index == 0) {
267 cpm->im_cpm_fcc1.fdsr = 0xD555;
268 } else if (info->ether_index == 1) {
269 cpm->im_cpm_fcc2.fdsr = 0xD555;
270 } else if (info->ether_index == 2) {
271 cpm->im_cpm_fcc3.fdsr = 0xD555;
274 /* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
278 /* Setup Receiver Buffer Descriptors */
279 for (i = 0; i < PKTBUFSRX; i++)
281 rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
282 rtx.rxbd[i].cbd_datlen = 0;
283 rtx.rxbd[i].cbd_bufaddr = (uint)NetRxPackets[i];
285 rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
287 /* Setup Ethernet Transmitter Buffer Descriptors */
288 for (i = 0; i < TX_BUF_CNT; i++)
290 rtx.txbd[i].cbd_sc = 0;
291 rtx.txbd[i].cbd_datlen = 0;
292 rtx.txbd[i].cbd_bufaddr = 0;
294 rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
296 /* 28.9 - (7): initialize parameter ram */
297 pram_ptr = (fcc_enet_t *)&(cpm->im_dprambase[info->proff_enet]);
299 /* clear whole structure to make sure all reserved fields are zero */
300 memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
303 * common Parameter RAM area
305 * Allocate space in the reserved FCC area of DPRAM for the
306 * internal buffers. No one uses this space (yet), so we
307 * can do this. Later, we will add resource management for
309 * CPM_FCC_SPECIAL_BASE: 0xB000 for MPC8540, MPC8560
310 * 0x9000 for MPC8541, MPC8555
312 mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
313 pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
314 pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
316 * Set maximum bytes per receive buffer.
317 * It must be a multiple of 32.
319 pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; /* 1536 */
320 /* localbus SDRAM should be preferred */
321 pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
322 CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
323 pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
324 pram_ptr->fen_genfcc.fcc_rbdstat = 0;
325 pram_ptr->fen_genfcc.fcc_rbdlen = 0;
326 pram_ptr->fen_genfcc.fcc_rdptr = 0;
327 /* localbus SDRAM should be preferred */
328 pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
329 CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
330 pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
331 pram_ptr->fen_genfcc.fcc_tbdstat = 0;
332 pram_ptr->fen_genfcc.fcc_tbdlen = 0;
333 pram_ptr->fen_genfcc.fcc_tdptr = 0;
335 /* protocol-specific area */
336 pram_ptr->fen_statbuf = 0x0;
337 pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
338 pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
339 pram_ptr->fen_crcec = 0;
340 pram_ptr->fen_alec = 0;
341 pram_ptr->fen_disfc = 0;
342 pram_ptr->fen_retlim = 15; /* Retry limit threshold */
343 pram_ptr->fen_retcnt = 0;
344 pram_ptr->fen_pper = 0;
345 pram_ptr->fen_boffcnt = 0;
346 pram_ptr->fen_gaddrh = 0;
347 pram_ptr->fen_gaddrl = 0;
348 pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
350 * Set Ethernet station address.
352 * This is supplied in the board information structure, so we
353 * copy that into the controller.
354 * So far we have only been given one Ethernet address. We make
355 * it unique by setting a few bits in the upper byte of the
356 * non-static part of the address.
358 #define ea eth_get_dev()->enetaddr
359 pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
360 pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
361 pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
363 pram_ptr->fen_ibdcount = 0;
364 pram_ptr->fen_ibdstart = 0;
365 pram_ptr->fen_ibdend = 0;
366 pram_ptr->fen_txlen = 0;
367 pram_ptr->fen_iaddrh = 0; /* disable hash */
368 pram_ptr->fen_iaddrl = 0;
369 pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register: 64 */
370 /* pad pointer. use tiptr since we don't need a specific padding char */
371 pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
372 pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length:1520 */
373 pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length:1520 */
375 #if defined(ET_DEBUG)
376 printf("parm_ptr(0xff788500) = %p\n",pram_ptr);
377 printf("pram_ptr->fen_genfcc.fcc_rbase %08x\n",
378 pram_ptr->fen_genfcc.fcc_rbase);
379 printf("pram_ptr->fen_genfcc.fcc_tbase %08x\n",
380 pram_ptr->fen_genfcc.fcc_tbase);
383 /* 28.9 - (8)(9): clear out events in FCCE */
384 /* 28.9 - (9): FCCM: mask all events */
385 if(info->ether_index == 0) {
386 cpm->im_cpm_fcc1.fcce = ~0x0;
387 cpm->im_cpm_fcc1.fccm = 0;
388 } else if (info->ether_index == 1) {
389 cpm->im_cpm_fcc2.fcce = ~0x0;
390 cpm->im_cpm_fcc2.fccm = 0;
391 } else if (info->ether_index == 2) {
392 cpm->im_cpm_fcc3.fcce = ~0x0;
393 cpm->im_cpm_fcc3.fccm = 0;
396 /* 28.9 - (10-12): we don't use ethernet interrupts */
400 * Let's re-initialize the channel now. We have to do it later
401 * than the manual describes because we have just now finished
402 * the BD initialization.
404 cp->cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
405 info->cpm_cr_enet_sblock,
407 CPM_CR_INIT_TRX) | CPM_CR_FLG;
409 __asm__ __volatile__ ("eieio");
410 } while (cp->cpcr & CPM_CR_FLG);
412 /* 28.9 - (14): enable tx/rx in gfmr */
413 if(info->ether_index == 0) {
414 cpm->im_cpm_fcc1.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
415 } else if (info->ether_index == 1) {
416 cpm->im_cpm_fcc2.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
417 } else if (info->ether_index == 2) {
418 cpm->im_cpm_fcc3.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
424 static void fec_halt(struct eth_device* dev)
426 struct ether_fcc_info_s * info = dev->priv;
427 volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
429 /* write GFMR: disable tx/rx */
430 if(info->ether_index == 0) {
431 cpm->im_cpm_fcc1.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
432 } else if(info->ether_index == 1) {
433 cpm->im_cpm_fcc2.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
434 } else if(info->ether_index == 2) {
435 cpm->im_cpm_fcc3.gfmr &= ~(FCC_GFMR_ENT | FCC_GFMR_ENR);
439 int fec_initialize(bd_t *bis)
441 struct eth_device* dev;
444 for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
446 dev = (struct eth_device*) malloc(sizeof *dev);
447 memset(dev, 0, sizeof *dev);
449 sprintf(dev->name, "FCC%d ETHERNET",
450 ether_fcc_info[i].ether_index + 1);
451 dev->priv = ðer_fcc_info[i];
452 dev->init = fec_init;
453 dev->halt = fec_halt;
454 dev->send = fec_send;
455 dev->recv = fec_recv;
459 #if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
460 && defined(CONFIG_BITBANGMII)
461 miiphy_register(dev->name,
462 bb_miiphy_read, bb_miiphy_write);