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(char *devname, unsigned char addr,
67
unsigned char reg, unsigned short *value);
68
int fec8xx_miiphy_write(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, volatile 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 ETHERNET");
169
sprintf (dev->name, "FEC%d ETHERNET",
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, volatile 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
volatile uchar *rx = NetRxPackets[rxIdx];
274
#if defined(CONFIG_CMD_CDP)
276
&& memcmp ((uchar *) rx, NetBcastAddr, 6) != 0
277
&& memcmp ((uchar *) rx, NetCDPAddr, 6) != 0)
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;
381
volatile fec_t *fecp;
384
* only two FECs please
386
if ((unsigned int)fecidx >= 2)
390
fecp = &immr->im_cpm.cp_fec1;
392
fecp = &immr->im_cpm.cp_fec2;
395
* Set MII speed to 2.5 MHz or slightly below.
396
* * According to the MPC860T (Rev. D) Fast ethernet controller user
398
* * the MII management interface clock must be less than or equal
400
* * This MDC frequency is equal to system clock / (2 * MII_SPEED).
401
* * Then MII_SPEED = system_clock / 2 * 2,5 MHz.
403
* All MII configuration is done via FEC1 registers:
405
immr->im_cpm.cp_fec1.fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
407
#if defined(CONFIG_NETTA) || defined(CONFIG_NETPHONE) || defined(CONFIG_NETTA2)
408
/* our PHYs are the limit at 2.5 MHz */
409
fecp->fec_mii_speed <<= 1;
412
#if defined(CONFIG_MPC885_FAMILY) && defined(WANT_MII)
413
/* use MDC for MII */
414
immr->im_ioport.iop_pdpar |= 0x0080;
415
immr->im_ioport.iop_pddir &= ~0x0080;
419
#if defined(CONFIG_ETHER_ON_FEC1)
421
#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
423
#if !defined(CONFIG_RMII)
425
immr->im_ioport.iop_papar |= 0xf830;
426
immr->im_ioport.iop_padir |= 0x0830;
427
immr->im_ioport.iop_padir &= ~0xf000;
429
immr->im_cpm.cp_pbpar |= 0x00001001;
430
immr->im_cpm.cp_pbdir &= ~0x00001001;
432
immr->im_ioport.iop_pcpar |= 0x000c;
433
immr->im_ioport.iop_pcdir &= ~0x000c;
435
immr->im_cpm.cp_pepar |= 0x00000003;
436
immr->im_cpm.cp_pedir |= 0x00000003;
437
immr->im_cpm.cp_peso &= ~0x00000003;
439
immr->im_cpm.cp_cptr &= ~0x00000100;
443
#if !defined(CONFIG_FEC1_PHY_NORXERR)
444
immr->im_ioport.iop_papar |= 0x1000;
445
immr->im_ioport.iop_padir &= ~0x1000;
447
immr->im_ioport.iop_papar |= 0xe810;
448
immr->im_ioport.iop_padir |= 0x0810;
449
immr->im_ioport.iop_padir &= ~0xe000;
451
immr->im_cpm.cp_pbpar |= 0x00000001;
452
immr->im_cpm.cp_pbdir &= ~0x00000001;
454
immr->im_cpm.cp_cptr |= 0x00000100;
455
immr->im_cpm.cp_cptr &= ~0x00000050;
457
#endif /* !CONFIG_RMII */
459
#elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
461
* Configure all of port D for MII.
463
immr->im_ioport.iop_pdpar = 0x1fff;
466
* Bits moved from Rev. D onward
468
if ((get_immr(0) & 0xffff) < 0x0501)
469
immr->im_ioport.iop_pddir = 0x1c58; /* Pre rev. D */
471
immr->im_ioport.iop_pddir = 0x1fff; /* Rev. D and later */
474
* Configure port A for MII.
477
#if defined(CONFIG_ICU862) && defined(CONFIG_SYS_DISCOVER_PHY)
480
* On the ICU862 board the MII-MDC pin is routed to PD8 pin
481
* * of CPU, so for this board we need to configure Utopia and
482
* * enable PD8 to MII-MDC function
484
immr->im_ioport.iop_pdpar |= 0x4080;
488
* Has Utopia been configured?
490
if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
492
* YES - Use MUXED mode for UTOPIA bus.
493
* This frees Port A for use by MII (see 862UM table 41-6).
495
immr->im_ioport.utmode &= ~0x80;
498
* NO - set SPLIT mode for UTOPIA bus.
500
* This doesn't really effect UTOPIA (which isn't
501
* enabled anyway) but just tells the 862
502
* to use port A for MII (see 862UM table 41-6).
504
immr->im_ioport.utmode |= 0x80;
506
#endif /* !defined(CONFIG_ICU862) */
508
#endif /* CONFIG_ETHER_ON_FEC1 */
509
} else if (fecidx == 1) {
511
#if defined(CONFIG_ETHER_ON_FEC2)
513
#if defined(CONFIG_MPC885_FAMILY) /* MPC87x/88x have got 2 FECs and different pinout */
515
#if !defined(CONFIG_RMII)
516
immr->im_cpm.cp_pepar |= 0x0003fffc;
517
immr->im_cpm.cp_pedir |= 0x0003fffc;
518
immr->im_cpm.cp_peso &= ~0x000087fc;
519
immr->im_cpm.cp_peso |= 0x00037800;
521
immr->im_cpm.cp_cptr &= ~0x00000080;
524
#if !defined(CONFIG_FEC2_PHY_NORXERR)
525
immr->im_cpm.cp_pepar |= 0x00000010;
526
immr->im_cpm.cp_pedir |= 0x00000010;
527
immr->im_cpm.cp_peso &= ~0x00000010;
529
immr->im_cpm.cp_pepar |= 0x00039620;
530
immr->im_cpm.cp_pedir |= 0x00039620;
531
immr->im_cpm.cp_peso |= 0x00031000;
532
immr->im_cpm.cp_peso &= ~0x00008620;
534
immr->im_cpm.cp_cptr |= 0x00000080;
535
immr->im_cpm.cp_cptr &= ~0x00000028;
536
#endif /* CONFIG_RMII */
538
#endif /* CONFIG_MPC885_FAMILY */
540
#endif /* CONFIG_ETHER_ON_FEC2 */
545
static int fec_reset(volatile fec_t *fecp)
550
* A delay is required between a reset of the FEC block and
551
* initialization of other FEC registers because the reset takes
552
* some time to complete. If you don't delay, subsequent writes
553
* to FEC registers might get killed by the reset routine which is
557
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
559
(fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
563
if (i == FEC_RESET_DELAY)
569
static int fec_init (struct eth_device *dev, bd_t * bd)
571
struct ether_fcc_info_s *efis = dev->priv;
572
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
573
volatile fec_t *fecp =
574
(volatile fec_t *) (CONFIG_SYS_IMMR + efis->fecp_offset);
577
if (efis->ether_index == 0) {
578
#if defined(CONFIG_FADS) /* FADS family uses FPGA (BCSR) to control PHYs */
579
#if defined(CONFIG_MPC885ADS)
580
*(vu_char *) BCSR5 &= ~(BCSR5_MII1_EN | BCSR5_MII1_RST);
582
/* configure FADS for fast (FEC) ethernet, half-duplex */
583
/* The LXT970 needs about 50ms to recover from reset, so
584
* wait for it by discovering the PHY before leaving eth_init().
587
volatile uint *bcsr4 = (volatile uint *) BCSR4;
589
*bcsr4 = (*bcsr4 & ~(BCSR4_FETH_EN | BCSR4_FETHCFG1))
590
| (BCSR4_FETHCFG0 | BCSR4_FETHFDE |
593
/* reset the LXT970 PHY */
594
*bcsr4 &= ~BCSR4_FETHRST;
596
*bcsr4 |= BCSR4_FETHRST;
599
#endif /* CONFIG_MPC885ADS */
600
#endif /* CONFIG_FADS */
603
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
604
/* the MII interface is connected to FEC1
605
* so for the miiphy_xxx function to work we must
606
* call mii_init since fec_halt messes the thing up
608
if (efis->ether_index != 0)
612
if (fec_reset(fecp) < 0)
613
printf ("FEC_RESET_DELAY timeout\n");
615
/* We use strictly polling mode only
619
/* Clear any pending interrupt
621
fecp->fec_ievent = 0xffc0;
623
/* No need to set the IVEC register */
625
/* Set station address
627
#define ea dev->enetaddr
628
fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) | (ea[2] << 8) | (ea[3]);
629
fecp->fec_addr_high = (ea[4] << 8) | (ea[5]);
632
#if defined(CONFIG_CMD_CDP)
634
* Turn on multicast address hash table
636
fecp->fec_hash_table_high = 0xffffffff;
637
fecp->fec_hash_table_low = 0xffffffff;
639
/* Clear multicast address hash table
641
fecp->fec_hash_table_high = 0;
642
fecp->fec_hash_table_low = 0;
645
/* Set maximum receive buffer size.
647
fecp->fec_r_buff_size = PKT_MAXBLR_SIZE;
649
/* Set maximum frame length
651
fecp->fec_r_hash = PKT_MAXBUF_SIZE;
654
* Setup Buffers and Buffer Desriptors
660
#ifdef CONFIG_SYS_ALLOC_DPRAM
661
rtx = (RTXBD *) (immr->im_cpm.cp_dpmem +
662
dpram_alloc_align (sizeof (RTXBD), 8));
664
rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_FEC_BASE);
668
* Setup Receiver Buffer Descriptors (13.14.24.18)
672
for (i = 0; i < PKTBUFSRX; i++) {
673
rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
674
rtx->rxbd[i].cbd_datlen = 0; /* Reset */
675
rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
677
rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
680
* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
684
for (i = 0; i < TX_BUF_CNT; i++) {
685
rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
686
rtx->txbd[i].cbd_datlen = 0; /* Reset */
687
rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
689
rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
691
/* Set receive and transmit descriptor base
693
fecp->fec_r_des_start = (unsigned int) (&rtx->rxbd[0]);
694
fecp->fec_x_des_start = (unsigned int) (&rtx->txbd[0]);
698
#if 0 /* Full duplex mode */
699
fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE;
700
fecp->fec_x_cntrl = FEC_TCNTRL_FDEN;
701
#else /* Half duplex mode */
702
fecp->fec_r_cntrl = FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;
703
fecp->fec_x_cntrl = 0;
706
/* Enable big endian and don't care about SDMA FC.
708
fecp->fec_fun_code = 0x78000000;
711
* Setup the pin configuration of the FEC
713
fec_pin_init (efis->ether_index);
719
* Now enable the transmit and receive processing
721
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
723
if (efis->phy_addr == -1) {
724
#ifdef CONFIG_SYS_DISCOVER_PHY
726
* wait for the PHY to wake up after reset
728
efis->actual_phy_addr = mii_discover_phy (dev);
730
if (efis->actual_phy_addr == -1) {
731
printf ("Unable to discover phy!\n");
735
efis->actual_phy_addr = -1;
738
efis->actual_phy_addr = efis->phy_addr;
741
#if defined(CONFIG_MII) && defined(CONFIG_RMII)
743
* adapt the RMII speed to the speed of the phy
745
if (miiphy_speed (dev->name, efis->actual_phy_addr) == _100BASET) {
752
#if defined(CONFIG_MII)
754
* adapt to the half/full speed settings
756
if (miiphy_duplex (dev->name, efis->actual_phy_addr) == FULL) {
757
fec_full_duplex (dev);
759
fec_half_duplex (dev);
763
/* And last, try to fill Rx Buffer Descriptors */
764
fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
766
efis->initialized = 1;
772
static void fec_halt(struct eth_device* dev)
774
struct ether_fcc_info_s *efis = dev->priv;
775
volatile fec_t *fecp = (volatile fec_t *)(CONFIG_SYS_IMMR + efis->fecp_offset);
778
/* avoid halt if initialized; mii gets stuck otherwise */
779
if (!efis->initialized)
783
* A delay is required between a reset of the FEC block and
784
* initialization of other FEC registers because the reset takes
785
* some time to complete. If you don't delay, subsequent writes
786
* to FEC registers might get killed by the reset routine which is
790
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET;
792
(fecp->fec_ecntrl & FEC_ECNTRL_RESET) && (i < FEC_RESET_DELAY);
796
if (i == FEC_RESET_DELAY) {
797
printf ("FEC_RESET_DELAY timeout\n");
801
efis->initialized = 0;
804
#if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
806
/* Make MII read/write commands for the FEC.
809
#define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
812
#define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
813
(REG & 0x1f) << 18) | \
816
/* Interrupt events/masks.
818
#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
819
#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
820
#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
821
#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
822
#define FEC_ENET_TXF ((uint)0x08000000) /* Full frame transmitted */
823
#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
824
#define FEC_ENET_RXF ((uint)0x02000000) /* Full frame received */
825
#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
826
#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
827
#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
829
/* PHY identification
831
#define PHY_ID_LXT970 0x78100000 /* LXT970 */
832
#define PHY_ID_LXT971 0x001378e0 /* LXT971 and 972 */
833
#define PHY_ID_82555 0x02a80150 /* Intel 82555 */
834
#define PHY_ID_QS6612 0x01814400 /* QS6612 */
835
#define PHY_ID_AMD79C784 0x00225610 /* AMD 79C784 */
836
#define PHY_ID_LSI80225 0x0016f870 /* LSI 80225 */
837
#define PHY_ID_LSI80225B 0x0016f880 /* LSI 80225/B */
838
#define PHY_ID_DM9161 0x0181B880 /* Davicom DM9161 */
839
#define PHY_ID_KSM8995M 0x00221450 /* MICREL KS8995MA */
841
/* send command to phy using mii, wait for result */
843
mii_send(uint mii_cmd)
849
ep = &(((immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_fec);
851
ep->fec_mii_data = mii_cmd; /* command to phy */
853
/* wait for mii complete */
855
while (!(ep->fec_ievent & FEC_ENET_MII)) {
857
printf("mii_send STUCK!\n");
861
mii_reply = ep->fec_mii_data; /* result from phy */
862
ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */
864
printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
865
__FILE__,__LINE__,__FUNCTION__,mii_cmd,mii_reply);
867
return (mii_reply & 0xffff); /* data read from phy */
871
#if defined(CONFIG_SYS_DISCOVER_PHY)
872
static int mii_discover_phy(struct eth_device *dev)
874
#define MAX_PHY_PASSES 11
880
phyaddr = -1; /* didn't find a PHY yet */
881
for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
883
/* PHY may need more time to recover from reset.
884
* The LXT970 needs 50ms typical, no maximum is
885
* specified, so wait 10ms before try again.
886
* With 11 passes this gives it 100ms to wake up.
888
udelay(10000); /* wait 10ms */
890
for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
891
phytype = mii_send(mk_mii_read(phyno, PHY_PHYIDR2));
893
printf("PHY type 0x%x pass %d type ", phytype, pass);
895
if (phytype != 0xffff) {
897
phytype |= mii_send(mk_mii_read(phyno,
901
printf("PHY @ 0x%x pass %d type ",phyno,pass);
902
switch (phytype & 0xfffffff0) {
915
case PHY_ID_AMD79C784:
916
printf("AMD79C784\n");
918
case PHY_ID_LSI80225B:
919
printf("LSI L80225/B\n");
922
printf("Davicom DM9161\n");
924
case PHY_ID_KSM8995M:
925
printf("MICREL KS8995M\n");
928
printf("0x%08x\n", phytype);
936
printf("No PHY device found.\n");
940
#endif /* CONFIG_SYS_DISCOVER_PHY */
942
#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
944
/****************************************************************************
945
* mii_init -- Initialize the MII via FEC 1 for MII command without ethernet
946
* This function is a subset of eth_init
947
****************************************************************************
949
static void __mii_init(void)
951
volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
952
volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
954
if (fec_reset(fecp) < 0)
955
printf ("FEC_RESET_DELAY timeout\n");
957
/* We use strictly polling mode only
961
/* Clear any pending interrupt
963
fecp->fec_ievent = 0xffc0;
965
/* Now enable the transmit and receive processing
967
fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
976
/* Setup the pin configuration of the FEC(s)
978
for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++)
979
fec_pin_init(ether_fcc_info[i].ether_index);
982
/*****************************************************************************
983
* Read and write a MII PHY register, routines used by MII Utilities
985
* FIXME: These routines are expected to return 0 on success, but mii_send
986
* does _not_ return an error code. Maybe 0xFFFF means error, i.e.
987
* no PHY connected...
988
* For now always return 0.
989
* FIXME: These routines only work after calling eth_init() at least once!
990
* Otherwise they hang in mii_send() !!! Sorry!
991
*****************************************************************************/
993
int fec8xx_miiphy_read(char *devname, unsigned char addr,
994
unsigned char reg, unsigned short *value)
996
short rdreg; /* register working value */
999
printf ("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
1001
rdreg = mii_send(mk_mii_read(addr, reg));
1005
printf ("0x%04x\n", *value);
1010
int fec8xx_miiphy_write(char *devname, unsigned char addr,
1011
unsigned char reg, unsigned short value)
1013
short rdreg; /* register working value */
1015
printf ("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
1017
rdreg = mii_send(mk_mii_write(addr, reg, value));
1020
printf ("0x%04x\n", value);