3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 DECLARE_GLOBAL_DATA_PTR;
34 #if defined(CONFIG_CMD_NET) && \
35 (defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FEC1) || defined(CONFIG_ETHER_ON_FEC2))
37 /* compatibility test, if only FEC_ENET defined assume ETHER on FEC1 */
38 #if defined(FEC_ENET) && !defined(CONFIG_ETHER_ON_FEC1) && !defined(CONFIG_ETHER_ON_FEC2)
39 #define CONFIG_ETHER_ON_FEC1 1
42 /* define WANT_MII when MII support is required */
43 #if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_FEC1_PHY) || defined(CONFIG_FEC2_PHY)
52 #if !(defined(CONFIG_MII) || defined(CONFIG_CMD_MII))
53 #error "CONFIG_MII has to be defined!"
58 #if defined(CONFIG_RMII) && !defined(WANT_MII)
59 #error RMII support is unusable without a working PHY.
62 #ifdef CONFIG_SYS_DISCOVER_PHY
63 static int mii_discover_phy(struct eth_device *dev);
66 int fec8xx_miiphy_read(const char *devname, unsigned char addr,
67 unsigned char reg, unsigned short *value);
68 int fec8xx_miiphy_write(const char *devname, unsigned char addr,
69 unsigned char reg, unsigned short value);
71 static struct ether_fcc_info_s
80 #if defined(CONFIG_ETHER_ON_FEC1)
83 offsetof(immap_t, im_cpm.cp_fec1),
84 #if defined(CONFIG_FEC1_PHY)
94 #if defined(CONFIG_ETHER_ON_FEC2)
97 offsetof(immap_t, im_cpm.cp_fec2),
98 #if defined(CONFIG_FEC2_PHY)
109 /* Ethernet Transmit and Receive Buffers */
110 #define DBUF_LENGTH 1520
114 #define TOUT_LOOP 100
116 #define PKT_MAXBUF_SIZE 1518
117 #define PKT_MINBUF_SIZE 64
118 #define PKT_MAXBLR_SIZE 1520
121 static char txbuf[DBUF_LENGTH] __attribute__ ((aligned(8)));
123 #error txbuf must be aligned.
126 static uint rxIdx; /* index of the current RX buffer */
127 static uint txIdx; /* index of the current TX buffer */
130 * FEC Ethernet Tx and Rx buffer descriptors allocated at the
131 * immr->udata_bd address on Dual-Port RAM
132 * Provide for Double Buffering
135 typedef volatile struct CommonBufferDescriptor {
136 cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
137 cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
140 static RTXBD *rtx = NULL;
142 static int fec_send(struct eth_device *dev, void *packet, int length);
143 static int fec_recv(struct eth_device* dev);
144 static int fec_init(struct eth_device* dev, bd_t * bd);
145 static void fec_halt(struct eth_device* dev);
146 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
147 static void __mii_init(void);
150 int fec_initialize(bd_t *bis)
152 struct eth_device* dev;
153 struct ether_fcc_info_s *efis;
156 for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++) {
158 dev = malloc(sizeof(*dev));
162 memset(dev, 0, sizeof(*dev));
164 /* for FEC1 make sure that the name of the interface is the same
165 as the old one for compatibility reasons */
167 sprintf (dev->name, "FEC");
169 sprintf (dev->name, "FEC%d",
170 ether_fcc_info[i].ether_index + 1);
173 efis = ðer_fcc_info[i];
176 * reset actual phy addr
178 efis->actual_phy_addr = -1;
181 dev->init = fec_init;
182 dev->halt = fec_halt;
183 dev->send = fec_send;
184 dev->recv = fec_recv;
188 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
189 miiphy_register(dev->name,
190 fec8xx_miiphy_read, fec8xx_miiphy_write);
196 static int fec_send(struct eth_device *dev, void *packet, int length)
199 struct ether_fcc_info_s *efis = dev->priv;
200 volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
206 while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
211 printf("TX not ready\n");
214 rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
215 rtx->txbd[txIdx].cbd_datlen = length;
216 rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
219 /* Activate transmit Buffer Descriptor polling */
220 fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
223 while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
224 #if defined(CONFIG_ICU862)
232 printf("TX timeout\n");
235 printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
236 __FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
237 (rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
239 /* return only status bits */;
240 rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
242 txIdx = (txIdx + 1) % TX_BUF_CNT;
247 static int fec_recv (struct eth_device *dev)
249 struct ether_fcc_info_s *efis = dev->priv;
250 volatile fec_t *fecp =
251 (volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
255 /* section 16.9.23.2 */
256 if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
258 break; /* nothing received - leave for() loop */
261 length = rtx->rxbd[rxIdx].cbd_datlen;
263 if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
265 printf ("%s[%d] err: %x\n",
266 __FUNCTION__, __LINE__,
267 rtx->rxbd[rxIdx].cbd_sc);
270 uchar *rx = NetRxPackets[rxIdx];
274 #if defined(CONFIG_CMD_CDP)
276 && memcmp ((uchar *) rx, NetBcastAddr, 6) != 0
277 && !is_cdp_packet((uchar *)rx))
281 * Pass the packet up to the protocol layers.
284 NetReceive (rx, length);
287 /* Give the buffer back to the FEC. */
288 rtx->rxbd[rxIdx].cbd_datlen = 0;
290 /* wrap around buffer index when necessary */
291 if ((rxIdx + 1) >= PKTBUFSRX) {
292 rtx->rxbd[PKTBUFSRX - 1].cbd_sc =
293 (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
296 rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
302 /* Try to fill Buffer Descriptors */
303 fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
309 /**************************************************************
311 * FEC Ethernet Initialization Routine
313 *************************************************************/
315 #define FEC_ECNTRL_PINMUX 0x00000004
316 #define FEC_ECNTRL_ETHER_EN 0x00000002
317 #define FEC_ECNTRL_RESET 0x00000001
319 #define FEC_RCNTRL_BC_REJ 0x00000010
320 #define FEC_RCNTRL_PROM 0x00000008
321 #define FEC_RCNTRL_MII_MODE 0x00000004
322 #define FEC_RCNTRL_DRT 0x00000002
323 #define FEC_RCNTRL_LOOP 0x00000001
325 #define FEC_TCNTRL_FDEN 0x00000004
326 #define FEC_TCNTRL_HBC 0x00000002
327 #define FEC_TCNTRL_GTS 0x00000001
329 #define FEC_RESET_DELAY 50
331 #if defined(CONFIG_RMII)
333 static inline void fec_10Mbps(struct eth_device *dev)
335 struct ether_fcc_info_s *efis = dev->priv;
336 int fecidx = efis->ether_index;
337 uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
339 if ((unsigned int)fecidx >= 2)
342 ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr |= mask;
345 static inline void fec_100Mbps(struct eth_device *dev)
347 struct ether_fcc_info_s *efis = dev->priv;
348 int fecidx = efis->ether_index;
349 uint mask = (fecidx == 0) ? 0x0000010 : 0x0000008;
351 if ((unsigned int)fecidx >= 2)
354 ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_cptr &= ~mask;
359 static inline void fec_full_duplex(struct eth_device *dev)
361 struct ether_fcc_info_s *efis = dev->priv;
362 volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
364 fecp->fec_r_cntrl &= ~FEC_RCNTRL_DRT;
365 fecp->fec_x_cntrl |= FEC_TCNTRL_FDEN; /* FD enable */
368 static inline void fec_half_duplex(struct eth_device *dev)
370 struct ether_fcc_info_s *efis = dev->priv;
371 volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
373 fecp->fec_r_cntrl |= FEC_RCNTRL_DRT;
374 fecp->fec_x_cntrl &= ~FEC_TCNTRL_FDEN; /* FD disable */
377 static void fec_pin_init(int fecidx)
380 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
383 * Set MII speed to 2.5 MHz or slightly below.
385 * According to the MPC860T (Rev. D) Fast ethernet controller user
387 * the MII management interface clock must be less than or equal
389 * This MDC frequency is equal to system clock / (2 * MII_SPEED).
390 * Then MII_SPEED = system_clock / 2 * 2,5 MHz.
392 * All MII configuration is done via FEC1 registers:
394 immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
396 #if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
398 volatile fec_t *fecp;
401 * only two FECs please
403 if ((unsigned int)fecidx >= 2)
407 fecp = &immr->im_cpm.cp_fec1;
409 fecp = &immr->im_cpm.cp_fec2;
411 /* our PHYs are the limit at 2.5 MHz */
412 fecp->fec_mii_speed <<= 1;
416 #if defined(CONFIG_MPC885_FAMILY) && defined(WANT_MII)
417 /* use MDC for MII */
418 immr->im_ioport.iop_pdpar |= 0x0080;
419 immr->im_ioport.iop_pddir &= ~0x0080;
423 #if defined(CONFIG_ETHER_ON_FEC1)
425 #if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
427 #if !defined(CONFIG_RMII)
429 immr->im_ioport.iop_papar |= 0xf830;
430 immr->im_ioport.iop_padir |= 0x0830;
431 immr->im_ioport.iop_padir &= ~0xf000;
433 immr->im_cpm.cp_pbpar |= 0x00001001;
434 immr->im_cpm.cp_pbdir &= ~0x00001001;
436 immr->im_ioport.iop_pcpar |= 0x000c;
437 immr->im_ioport.iop_pcdir &= ~0x000c;
439 immr->im_cpm.cp_pepar |= 0x00000003;
440 immr->im_cpm.cp_pedir |= 0x00000003;
441 immr->im_cpm.cp_peso &= ~0x00000003;
443 immr->im_cpm.cp_cptr &= ~0x00000100;
447 #if !defined(CONFIG_FEC1_PHY_NORXERR)
448 immr->im_ioport.iop_papar |= 0x1000;
449 immr->im_ioport.iop_padir &= ~0x1000;
451 immr->im_ioport.iop_papar |= 0xe810;
452 immr->im_ioport.iop_padir |= 0x0810;
453 immr->im_ioport.iop_padir &= ~0xe000;
455 immr->im_cpm.cp_pbpar |= 0x00000001;
456 immr->im_cpm.cp_pbdir &= ~0x00000001;
458 immr->im_cpm.cp_cptr |= 0x00000100;
459 immr->im_cpm.cp_cptr &= ~0x00000050;
461 #endif /* !CONFIG_RMII */
463 #elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
465 * Configure all of port D for MII.
467 immr->im_ioport.iop_pdpar = 0x1fff;
470 * Bits moved from Rev. D onward
472 if ((get_immr(0) & 0xffff) < 0x0501)
473 immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
475 immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
478 * Configure port A for MII.
481 #if defined(CONFIG_ICU862) && defined(CONFIG_SYS_DISCOVER_PHY)
484 * On the ICU862 board the MII-MDC pin is routed to PD8 pin
485 * * of CPU, so for this board we need to configure Utopia and
486 * * enable PD8 to MII-MDC function
488 immr->im_ioport.iop_pdpar |= 0x4080;
492 * Has Utopia been configured?
494 if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
496 * YES - Use MUXED mode for UTOPIA bus.
497 * This frees Port A for use by MII (see 862UM table 41-6).
499 immr->im_ioport.utmode &= ~0x80;
502 * NO - set SPLIT mode for UTOPIA bus.
504 * This doesn't really effect UTOPIA (which isn't
505 * enabled anyway) but just tells the 862
506 * to use port A for MII (see 862UM table 41-6).
508 immr->im_ioport.utmode |= 0x80;
510 #endif /* !defined(CONFIG_ICU862) */
512 #endif /* CONFIG_ETHER_ON_FEC1 */
513 } else if (fecidx == 1) {
515 #if defined(CONFIG_ETHER_ON_FEC2)
517 #if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
519 #if !defined(CONFIG_RMII)
520 immr->im_cpm.cp_pepar |= 0x0003fffc;
521 immr->im_cpm.cp_pedir |= 0x0003fffc;
522 immr->im_cpm.cp_peso &= ~0x000087fc;
523 immr->im_cpm.cp_peso |= 0x00037800;
525 immr->im_cpm.cp_cptr &= ~0x00000080;
528 #if !defined(CONFIG_FEC2_PHY_NORXERR)
529 immr->im_cpm.cp_pepar |= 0x00000010;
530 immr->im_cpm.cp_pedir |= 0x00000010;
531 immr->im_cpm.cp_peso &= ~0x00000010;
533 immr->im_cpm.cp_pepar |= 0x00039620;
534 immr->im_cpm.cp_pedir |= 0x00039620;
535 immr->im_cpm.cp_peso |= 0x00031000;
536 immr->im_cpm.cp_peso &= ~0x00008620;
538 immr->im_cpm.cp_cptr |= 0x00000080;
539 immr->im_cpm.cp_cptr &= ~0x00000028;
540 #endif /* CONFIG_RMII */
542 #endif /* CONFIG_MPC885_FAMILY */
544 #endif /* CONFIG_ETHER_ON_FEC2 */
549 static int fec_reset(volatile fec_t *fecp)
554 * A delay is required between a reset of the FEC block and
555 * initialization of other FEC registers because the reset takes
556 * some time to complete. If you don't delay, subsequent writes
557 * to FEC registers might get killed by the reset routine which is
561 fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
563 (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
567 if (i == FEC_RESET_DELAY)
573 static int fec_init (struct eth_device *dev, bd_t * bd)
575 struct ether_fcc_info_s *efis = dev->priv;
576 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
577 volatile fec_t *fecp =
578 (volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
581 if (efis->ether_index == 0) {
582 #if defined(CONFIG_FADS) /* FADS family uses FPGA (BCSR) to control PHYs */
583 #if defined(CONFIG_MPC885ADS)
584 *(vu_char *) BCSR5 &= ~(BCSR5_MII1_EN | BCSR5_MII1_RST);
586 /* configure FADS for fast (FEC) ethernet, half-duplex */
587 /* The LXT970 needs about 50ms to recover from reset, so
588 * wait for it by discovering the PHY before leaving eth_init().
591 volatile uint *bcsr4 = (volatile uint *) BCSR4;
593 *bcsr4 = (*bcsr4 & ~(BCSR4_FETH_EN | BCSR4_FETHCFG1))
594 | (BCSR4_FETHCFG0 | BCSR4_FETHFDE |
597 /* reset the LXT970 PHY */
598 *bcsr4 &= ~BCSR4_FETHRST;
600 *bcsr4 |= BCSR4_FETHRST;
603 #endif /* CONFIG_MPC885ADS */
604 #endif /* CONFIG_FADS */
607 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
608 /* the MII interface is connected to FEC1
609 * so for the miiphy_xxx function to work we must
610 * call mii_init since fec_halt messes the thing up
612 if (efis->ether_index != 0)
616 if (fec_reset(fecp) < 0)
617 printf ("FEC_RESET_DELAY timeout\n");
619 /* We use strictly polling mode only
623 /* Clear any pending interrupt
625 fecp->fec_ievent = 0xffc0;
627 /* No need to set the IVEC register */
629 /* Set station address
631 #define ea dev->enetaddr
632 fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
633 fecp->fec_addr_high = (ea[4] << 8) | (ea[5]);
636 #if defined(CONFIG_CMD_CDP)
638 * Turn on multicast address hash table
640 fecp->fec_hash_table_high = 0xffffffff;
641 fecp->fec_hash_table_low = 0xffffffff;
643 /* Clear multicast address hash table
645 fecp->fec_hash_table_high = 0;
646 fecp->fec_hash_table_low = 0;
649 /* Set maximum receive buffer size.
651 fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
653 /* Set maximum frame length
655 fecp->fec_r_hash = PKT_MAXBUF_SIZE;
658 * Setup Buffers and Buffer Desriptors
664 #ifdef CONFIG_SYS_ALLOC_DPRAM
665 rtx = (RTXBD *) (immr->im_cpm.cp_dpmem +
666 dpram_alloc_align (sizeof (RTXBD), 8));
668 rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_FEC_BASE);
672 * Setup Receiver Buffer Descriptors (13.14.24.18)
676 for (i = 0; i < PKTBUFSRX; i++) {
677 rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
678 rtx->rxbd[i].cbd_datlen = 0; /* Reset */
679 rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
681 rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
684 * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
688 for (i = 0; i < TX_BUF_CNT; i++) {
689 rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
690 rtx->txbd[i].cbd_datlen = 0; /* Reset */
691 rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
693 rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
695 /* Set receive and transmit descriptor base
697 fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
698 fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
702 #if 0 /* Full duplex mode */
703 fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;
704 fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;
705 #else /* Half duplex mode */
706 fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
707 fecp->fec_x_cntrl = 0;
710 /* Enable big endian and don't care about SDMA FC.
712 fecp->fec_fun_code = 0x78000000;
715 * Setup the pin configuration of the FEC
717 fec_pin_init (efis->ether_index);
723 * Now enable the transmit and receive processing
725 fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
727 if (efis->phy_addr == -1) {
728 #ifdef CONFIG_SYS_DISCOVER_PHY
730 * wait for the PHY to wake up after reset
732 efis->actual_phy_addr = mii_discover_phy (dev);
734 if (efis->actual_phy_addr == -1) {
735 printf ("Unable to discover phy!\n");
739 efis->actual_phy_addr = -1;
742 efis->actual_phy_addr = efis->phy_addr;
745 #if defined(CONFIG_MII) && defined(CONFIG_RMII)
747 * adapt the RMII speed to the speed of the phy
749 if (miiphy_speed (dev->name, efis->actual_phy_addr) == _100BASET) {
756 #if defined(CONFIG_MII)
758 * adapt to the half/full speed settings
760 if (miiphy_duplex (dev->name, efis->actual_phy_addr) == FULL) {
761 fec_full_duplex (dev);
763 fec_half_duplex (dev);
767 /* And last, try to fill Rx Buffer Descriptors */
768 fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
770 efis->initialized = 1;
776 static void fec_halt(struct eth_device* dev)
778 struct ether_fcc_info_s *efis = dev->priv;
779 volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
782 /* avoid halt if initialized; mii gets stuck otherwise */
783 if (!efis->initialized)
787 * A delay is required between a reset of the FEC block and
788 * initialization of other FEC registers because the reset takes
789 * some time to complete. If you don't delay, subsequent writes
790 * to FEC registers might get killed by the reset routine which is
794 fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
796 (fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
800 if (i == FEC_RESET_DELAY) {
801 printf ("FEC_RESET_DELAY timeout\n");
805 efis->initialized = 0;
808 #if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
810 /* Make MII read/write commands for the FEC.
813 #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
816 #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
817 (REG & 0x1f) << 18) | \
820 /* Interrupt events/masks.
822 #define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
823 #define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
824 #define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
825 #define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
826 #define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
827 #define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
828 #define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
829 #define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
830 #define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
831 #define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
833 /* PHY identification
835 #define PHY_ID_LXT970 0x78100000 /* LXT970 */
836 #define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */
837 #define PHY_ID_82555 0x02a80150 /* Intel 82555 */
838 #define PHY_ID_QS6612 0x01814400 /* QS6612 */
839 #define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */
840 #define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */
841 #define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */
842 #define PHY_ID_DM9161 0x0181B880 /* Davicom DM9161 */
843 #define PHY_ID_KSM8995M 0x00221450 /* MICREL KS8995MA */
845 /* send command to phy using mii, wait for result */
847 mii_send(uint mii_cmd)
853 ep = &(((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_fec);
855 ep->fec_mii_data = mii_cmd; /* command to phy */
857 /* wait for mii complete */
859 while (!(ep->fec_ievent & FEC_ENET_MII)) {
861 printf("mii_send STUCK!\n");
865 mii_reply = ep->fec_mii_data; /* result from phy */
866 ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
868 printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
869 __FILE__,__LINE__,__FUNCTION__,mii_cmd,mii_reply);
871 return (mii_reply & 0xffff); /* data read from phy */
875 #if defined(CONFIG_SYS_DISCOVER_PHY)
876 static int mii_discover_phy(struct eth_device *dev)
878 #define MAX_PHY_PASSES 11
884 phyaddr = -1; /* didn't find a PHY yet */
885 for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
887 /* PHY may need more time to recover from reset.
888 * The LXT970 needs 50ms typical, no maximum is
889 * specified, so wait 10ms before try again.
890 * With 11 passes this gives it 100ms to wake up.
892 udelay(10000); /* wait 10ms */
894 for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
895 phytype = mii_send(mk_mii_read(phyno, MII_PHYSID2));
897 printf("PHY type 0x%x pass %d type ", phytype, pass);
899 if (phytype != 0xffff) {
901 phytype |= mii_send(mk_mii_read(phyno,
905 printf("PHY @ 0x%x pass %d type ",phyno,pass);
906 switch (phytype & 0xfffffff0) {
919 case PHY_ID_AMD79C784:
920 printf("AMD79C784\n");
922 case PHY_ID_LSI80225B:
923 printf("LSI L80225/B\n");
926 printf("Davicom DM9161\n");
928 case PHY_ID_KSM8995M:
929 printf("MICREL KS8995M\n");
932 printf("0x%08x\n", phytype);
940 printf("No PHY device found.\n");
944 #endif /* CONFIG_SYS_DISCOVER_PHY */
946 #if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
948 /****************************************************************************
949 * mii_init -- Initialize the MII via FEC 1 for MII command without ethernet
950 * This function is a subset of eth_init
951 ****************************************************************************
953 static void __mii_init(void)
955 volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
956 volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
958 if (fec_reset(fecp) < 0)
959 printf ("FEC_RESET_DELAY timeout\n");
961 /* We use strictly polling mode only
965 /* Clear any pending interrupt
967 fecp->fec_ievent = 0xffc0;
969 /* Now enable the transmit and receive processing
971 fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
980 /* Setup the pin configuration of the FEC(s)
982 for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
983 fec_pin_init(ether_fcc_info[i].ether_index);
986 /*****************************************************************************
987 * Read and write a MII PHY register, routines used by MII Utilities
989 * FIXME: These routines are expected to return 0 on success, but mii_send
990 * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
991 * no PHY connected...
992 * For now always return 0.
993 * FIXME: These routines only work after calling eth_init() at least once!
994 * Otherwise they hang in mii_send() !!! Sorry!
995 *****************************************************************************/
997 int fec8xx_miiphy_read(const char *devname, unsigned char addr,
998 unsigned char reg, unsigned short *value)
1000 short rdreg; /* register working value */
1003 printf ("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
1005 rdreg = mii_send(mk_mii_read(addr, reg));
1009 printf ("0x%04x\n", *value);
1014 int fec8xx_miiphy_write(const char *devname, unsigned char addr,
1015 unsigned char reg, unsigned short value)
1018 printf ("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
1020 (void)mii_send(mk_mii_write(addr, reg, value));
1023 printf ("0x%04x\n", value);