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 * SPDX-License-Identifier: GPL-2.0+
15 * MPC8560 FCC Fast Ethernet
16 * Basic ET HW initialization and packet RX/TX routines
18 * This code will not perform the IO port configuration. This should be
19 * done in the iop_conf_t structure specific for the board.
22 * add a PHY driver to do the negotiation
23 * reflect negotiation results in FPSMR
24 * look for ways to configure the board specific stuff elsewhere, eg.
25 * config_xxx.h or the board directory
30 #include <asm/cpm_85xx.h>
35 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
39 #if defined(CONFIG_ETHER_ON_FCC) && defined(CONFIG_CMD_NET)
41 static struct ether_fcc_info_s
45 ulong cpm_cr_enet_sblock;
46 ulong cpm_cr_enet_page;
52 #ifdef CONFIG_ETHER_ON_FCC1
58 CONFIG_SYS_CMXFCR_MASK1,
59 CONFIG_SYS_CMXFCR_VALUE1
63 #ifdef CONFIG_ETHER_ON_FCC2
69 CONFIG_SYS_CMXFCR_MASK2,
70 CONFIG_SYS_CMXFCR_VALUE2
74 #ifdef CONFIG_ETHER_ON_FCC3
80 CONFIG_SYS_CMXFCR_MASK3,
81 CONFIG_SYS_CMXFCR_VALUE3
86 /*---------------------------------------------------------------------*/
88 /* Maximum input DMA size. Must be a should(?) be a multiple of 4. */
89 #define PKT_MAXDMA_SIZE 1520
91 /* The FCC stores dest/src/type, data, and checksum for receive packets. */
92 #define PKT_MAXBUF_SIZE 1518
93 #define PKT_MINBUF_SIZE 64
95 /* Maximum input buffer size. Must be a multiple of 32. */
96 #define PKT_MAXBLR_SIZE 1536
98 #define TOUT_LOOP 1000000
102 static uint rxIdx; /* index of the current RX buffer */
103 static uint txIdx; /* index of the current TX buffer */
106 * FCC Ethernet Tx and Rx buffer descriptors.
107 * Provide for Double Buffering
108 * Note: PKTBUFSRX is defined in net.h
111 typedef volatile struct rtxbd {
112 cbd_t rxbd[PKTBUFSRX];
113 cbd_t txbd[TX_BUF_CNT];
116 /* Good news: the FCC supports external BDs! */
118 static RTXBD rtx __attribute__ ((aligned(8)));
120 #error "rtx must be 64-bit aligned"
125 static int fec_send(struct eth_device *dev, void *packet, int length)
131 printf("fec: bad packet size: %d\n", length);
135 for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
136 if (i >= TOUT_LOOP) {
137 printf("fec: tx buffer not ready\n");
142 rtx.txbd[txIdx].cbd_bufaddr = (uint)packet;
143 rtx.txbd[txIdx].cbd_datlen = length;
144 rtx.txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST | \
145 BD_ENET_TX_TC | BD_ENET_TX_PAD);
147 for(i=0; rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
148 if (i >= TOUT_LOOP) {
149 printf("fec: tx error\n");
155 printf("cycles: 0x%x txIdx=0x%04x status: 0x%04x\n", i, txIdx,rtx.txbd[txIdx].cbd_sc);
156 printf("packets at 0x%08x, length_in_bytes=0x%x\n",(uint)packet,length);
157 for(i=0;i<(length/16 + 1);i++) {
158 printf("%08x %08x %08x %08x\n",*((uint *)rtx.txbd[txIdx].cbd_bufaddr+i*4),\
159 *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 1),*((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 2), \
160 *((uint *)rtx.txbd[txIdx].cbd_bufaddr + i*4 + 3));
164 /* return only status bits */
165 result = rtx.txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
166 txIdx = (txIdx + 1) % TX_BUF_CNT;
172 static int fec_recv(struct eth_device* dev)
178 if (rtx.rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
180 break; /* nothing received - leave for() loop */
182 length = rtx.rxbd[rxIdx].cbd_datlen;
184 if (rtx.rxbd[rxIdx].cbd_sc & 0x003f) {
185 printf("fec: rx error %04x\n", rtx.rxbd[rxIdx].cbd_sc);
188 /* Pass the packet up to the protocol layers. */
189 NetReceive(NetRxPackets[rxIdx], length - 4);
193 /* Give the buffer back to the FCC. */
194 rtx.rxbd[rxIdx].cbd_datlen = 0;
196 /* wrap around buffer index when necessary */
197 if ((rxIdx + 1) >= PKTBUFSRX) {
198 rtx.rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
202 rtx.rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
210 static int fec_init(struct eth_device* dev, bd_t *bis)
212 struct ether_fcc_info_s * info = dev->priv;
214 volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
215 volatile ccsr_cpm_cp_t *cp = &(cpm->im_cpm_cp);
216 fcc_enet_t *pram_ptr;
217 unsigned long mem_addr;
223 /* 28.9 - (1-2): ioports have been set up already */
225 /* 28.9 - (3): connect FCC's tx and rx clocks */
226 cpm->im_cpm_mux.cmxuar = 0; /* ATM */
227 cpm->im_cpm_mux.cmxfcr = (cpm->im_cpm_mux.cmxfcr & ~info->cmxfcr_mask) |
230 /* 28.9 - (4): GFMR: disable tx/rx, CCITT CRC, set Mode Ethernet */
231 if(info->ether_index == 0) {
232 cpm->im_cpm_fcc1.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
233 } else if (info->ether_index == 1) {
234 cpm->im_cpm_fcc2.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
235 } else if (info->ether_index == 2) {
236 cpm->im_cpm_fcc3.gfmr = FCC_GFMR_MODE_ENET | FCC_GFMR_TCRC_32;
239 /* 28.9 - (5): FPSMR: enable full duplex, select CCITT CRC for Ethernet,MII */
240 if(info->ether_index == 0) {
241 cpm->im_cpm_fcc1.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
242 } else if (info->ether_index == 1){
243 cpm->im_cpm_fcc2.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
244 } else if (info->ether_index == 2){
245 cpm->im_cpm_fcc3.fpsmr = CONFIG_SYS_FCC_PSMR | FCC_PSMR_ENCRC;
248 /* 28.9 - (6): FDSR: Ethernet Syn */
249 if(info->ether_index == 0) {
250 cpm->im_cpm_fcc1.fdsr = 0xD555;
251 } else if (info->ether_index == 1) {
252 cpm->im_cpm_fcc2.fdsr = 0xD555;
253 } else if (info->ether_index == 2) {
254 cpm->im_cpm_fcc3.fdsr = 0xD555;
257 /* reset indeces to current rx/tx bd (see eth_send()/eth_rx()) */
261 /* Setup Receiver Buffer Descriptors */
262 for (i = 0; i < PKTBUFSRX; i++)
264 rtx.rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
265 rtx.rxbd[i].cbd_datlen = 0;
266 rtx.rxbd[i].cbd_bufaddr = (uint)NetRxPackets[i];
268 rtx.rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
270 /* Setup Ethernet Transmitter Buffer Descriptors */
271 for (i = 0; i < TX_BUF_CNT; i++)
273 rtx.txbd[i].cbd_sc = 0;
274 rtx.txbd[i].cbd_datlen = 0;
275 rtx.txbd[i].cbd_bufaddr = 0;
277 rtx.txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
279 /* 28.9 - (7): initialize parameter ram */
280 pram_ptr = (fcc_enet_t *)&(cpm->im_dprambase[info->proff_enet]);
282 /* clear whole structure to make sure all reserved fields are zero */
283 memset((void*)pram_ptr, 0, sizeof(fcc_enet_t));
286 * common Parameter RAM area
288 * Allocate space in the reserved FCC area of DPRAM for the
289 * internal buffers. No one uses this space (yet), so we
290 * can do this. Later, we will add resource management for
292 * CPM_FCC_SPECIAL_BASE: 0xB000 for MPC8540, MPC8560
293 * 0x9000 for MPC8541, MPC8555
295 mem_addr = CPM_FCC_SPECIAL_BASE + ((info->ether_index) * 64);
296 pram_ptr->fen_genfcc.fcc_riptr = mem_addr;
297 pram_ptr->fen_genfcc.fcc_tiptr = mem_addr+32;
299 * Set maximum bytes per receive buffer.
300 * It must be a multiple of 32.
302 pram_ptr->fen_genfcc.fcc_mrblr = PKT_MAXBLR_SIZE; /* 1536 */
303 /* localbus SDRAM should be preferred */
304 pram_ptr->fen_genfcc.fcc_rstate = (CPMFCR_GBL | CPMFCR_EB |
305 CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
306 pram_ptr->fen_genfcc.fcc_rbase = (unsigned int)(&rtx.rxbd[rxIdx]);
307 pram_ptr->fen_genfcc.fcc_rbdstat = 0;
308 pram_ptr->fen_genfcc.fcc_rbdlen = 0;
309 pram_ptr->fen_genfcc.fcc_rdptr = 0;
310 /* localbus SDRAM should be preferred */
311 pram_ptr->fen_genfcc.fcc_tstate = (CPMFCR_GBL | CPMFCR_EB |
312 CONFIG_SYS_CPMFCR_RAMTYPE) << 24;
313 pram_ptr->fen_genfcc.fcc_tbase = (unsigned int)(&rtx.txbd[txIdx]);
314 pram_ptr->fen_genfcc.fcc_tbdstat = 0;
315 pram_ptr->fen_genfcc.fcc_tbdlen = 0;
316 pram_ptr->fen_genfcc.fcc_tdptr = 0;
318 /* protocol-specific area */
319 pram_ptr->fen_statbuf = 0x0;
320 pram_ptr->fen_cmask = 0xdebb20e3; /* CRC mask */
321 pram_ptr->fen_cpres = 0xffffffff; /* CRC preset */
322 pram_ptr->fen_crcec = 0;
323 pram_ptr->fen_alec = 0;
324 pram_ptr->fen_disfc = 0;
325 pram_ptr->fen_retlim = 15; /* Retry limit threshold */
326 pram_ptr->fen_retcnt = 0;
327 pram_ptr->fen_pper = 0;
328 pram_ptr->fen_boffcnt = 0;
329 pram_ptr->fen_gaddrh = 0;
330 pram_ptr->fen_gaddrl = 0;
331 pram_ptr->fen_mflr = PKT_MAXBUF_SIZE; /* maximum frame length register */
333 * Set Ethernet station address.
335 * This is supplied in the board information structure, so we
336 * copy that into the controller.
337 * So far we have only been given one Ethernet address. We make
338 * it unique by setting a few bits in the upper byte of the
339 * non-static part of the address.
341 #define ea eth_get_dev()->enetaddr
342 pram_ptr->fen_paddrh = (ea[5] << 8) + ea[4];
343 pram_ptr->fen_paddrm = (ea[3] << 8) + ea[2];
344 pram_ptr->fen_paddrl = (ea[1] << 8) + ea[0];
346 pram_ptr->fen_ibdcount = 0;
347 pram_ptr->fen_ibdstart = 0;
348 pram_ptr->fen_ibdend = 0;
349 pram_ptr->fen_txlen = 0;
350 pram_ptr->fen_iaddrh = 0; /* disable hash */
351 pram_ptr->fen_iaddrl = 0;
352 pram_ptr->fen_minflr = PKT_MINBUF_SIZE; /* minimum frame length register: 64 */
353 /* pad pointer. use tiptr since we don't need a specific padding char */
354 pram_ptr->fen_padptr = pram_ptr->fen_genfcc.fcc_tiptr;
355 pram_ptr->fen_maxd1 = PKT_MAXDMA_SIZE; /* maximum DMA1 length:1520 */
356 pram_ptr->fen_maxd2 = PKT_MAXDMA_SIZE; /* maximum DMA2 length:1520 */
358 #if defined(ET_DEBUG)
359 printf("parm_ptr(0xff788500) = %p\n",pram_ptr);
360 printf("pram_ptr->fen_genfcc.fcc_rbase %08x\n",
361 pram_ptr->fen_genfcc.fcc_rbase);
362 printf("pram_ptr->fen_genfcc.fcc_tbase %08x\n",
363 pram_ptr->fen_genfcc.fcc_tbase);
366 /* 28.9 - (8)(9): clear out events in FCCE */
367 /* 28.9 - (9): FCCM: mask all events */
368 if(info->ether_index == 0) {
369 cpm->im_cpm_fcc1.fcce = ~0x0;
370 cpm->im_cpm_fcc1.fccm = 0;
371 } else if (info->ether_index == 1) {
372 cpm->im_cpm_fcc2.fcce = ~0x0;
373 cpm->im_cpm_fcc2.fccm = 0;
374 } else if (info->ether_index == 2) {
375 cpm->im_cpm_fcc3.fcce = ~0x0;
376 cpm->im_cpm_fcc3.fccm = 0;
379 /* 28.9 - (10-12): we don't use ethernet interrupts */
383 * Let's re-initialize the channel now. We have to do it later
384 * than the manual describes because we have just now finished
385 * the BD initialization.
387 cp->cpcr = mk_cr_cmd(info->cpm_cr_enet_page,
388 info->cpm_cr_enet_sblock,
390 CPM_CR_INIT_TRX) | CPM_CR_FLG;
392 __asm__ __volatile__ ("eieio");
393 } while (cp->cpcr & CPM_CR_FLG);
395 /* 28.9 - (14): enable tx/rx in gfmr */
396 if(info->ether_index == 0) {
397 cpm->im_cpm_fcc1.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
398 } else if (info->ether_index == 1) {
399 cpm->im_cpm_fcc2.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
400 } else if (info->ether_index == 2) {
401 cpm->im_cpm_fcc3.gfmr |= FCC_GFMR_ENT | FCC_GFMR_ENR;
407 static void fec_halt(struct eth_device* dev)
409 struct ether_fcc_info_s * info = dev->priv;
410 volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR;
412 /* write GFMR: disable tx/rx */
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);
422 int fec_initialize(bd_t *bis)
424 struct eth_device* dev;
427 for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
429 dev = (struct eth_device*) malloc(sizeof *dev);
430 memset(dev, 0, sizeof *dev);
432 sprintf(dev->name, "FCC%d",
433 ether_fcc_info[i].ether_index + 1);
434 dev->priv = ðer_fcc_info[i];
435 dev->init = fec_init;
436 dev->halt = fec_halt;
437 dev->send = fec_send;
438 dev->recv = fec_recv;
442 #if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
443 && defined(CONFIG_BITBANGMII)
444 miiphy_register(dev->name,
445 bb_miiphy_read, bb_miiphy_write);