1 /*------------------------------------------------------------------------
3 . This is a driver for SMSC's 91C111 single-chip Ethernet device.
6 . Sysgo Real-Time Solutions, GmbH <www.elinos.com>
7 . Rolf Offermanns <rof@sysgo.de>
9 . Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
10 . Developed by Simple Network Magic Corporation (SNMC)
11 . Copyright (C) 1996 by Erik Stahlman (ES)
13 . This program is free software; you can redistribute it and/or modify
14 . it under the terms of the GNU General Public License as published by
15 . the Free Software Foundation; either version 2 of the License, or
16 . (at your option) any later version.
18 . This program is distributed in the hope that it will be useful,
19 . but WITHOUT ANY WARRANTY; without even the implied warranty of
20 . MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 . GNU General Public License for more details.
23 . You should have received a copy of the GNU General Public License
24 . along with this program; if not, write to the Free Software
25 . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 . Information contained in this file was obtained from the LAN91C111
28 . manual from SMC. To get a copy, if you really want one, you can find
29 . information under www.smsc.com.
32 . "Features" of the SMC chip:
33 . Integrated PHY/MAC for 10/100BaseT Operation
34 . Supports internal and external MII
35 . Integrated 8K packet memory
36 . EEPROM interface for configuration
39 . io = for the base address
43 . Erik Stahlman ( erik@vt.edu )
44 . Daris A Nevil ( dnevil@snmc.com )
47 . Hardware multicast code from Peter Cammaert ( pc@denkart.be )
50 . o SMSC LAN91C111 databook (www.smsc.com)
51 . o smc9194.c by Erik Stahlman
52 . o skeleton.c by Donald Becker ( becker@cesdis.gsfc.nasa.gov )
55 . 06/19/03 Richard Woodruff Made u-boot environment aware and added mac addr checks.
56 . 10/17/01 Marco Hasewinkel Modify for DNP/1110
57 . 07/25/01 Woojung Huh Modify for ADS Bitsy
58 . 04/25/01 Daris A Nevil Initial public release through SMSC
59 . 03/16/01 Daris A Nevil Modified smc9194.c for use with LAN91C111
60 ----------------------------------------------------------------------------*/
67 #ifdef CONFIG_DRIVER_SMC91111
69 /* Use power-down feature of the chip */
74 static const char version[] =
75 "smc91111.c:v1.0 04/25/01 by Daris A Nevil (dnevil@snmc.com)\n";
79 /*------------------------------------------------------------------------
81 . Configuration options, for the experienced user to change.
83 -------------------------------------------------------------------------*/
86 . Wait time for memory to be free. This probably shouldn't be
87 . tuned that much, as waiting for this means nothing else happens
90 #define MEMORY_WAIT_TIME 16
94 #define PRINTK3(args...) printf(args)
96 #define PRINTK3(args...)
100 #define PRINTK2(args...) printf(args)
102 #define PRINTK2(args...)
106 #define PRINTK(args...) printf(args)
108 #define PRINTK(args...)
112 /*------------------------------------------------------------------------
114 . The internal workings of the driver. If you are changing anything
115 . here with the SMC stuff, you should have the datasheet and know
116 . what you are doing.
118 -------------------------------------------------------------------------*/
119 #define CARDNAME "LAN91C111"
121 /* Memory sizing constant */
122 #define LAN91C111_MEMORY_MULTIPLIER (1024*2)
124 #ifndef CONFIG_SMC91111_BASE
125 #define CONFIG_SMC91111_BASE 0x20000300
128 #define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
130 #define SMC_DEV_NAME "SMC91111"
131 #define SMC_PHY_ADDR 0x0000
132 #define SMC_ALLOC_MAX_TRY 5
133 #define SMC_TX_TIMEOUT 30
135 #define SMC_PHY_CLOCK_DELAY 1000
139 #ifdef CONFIG_SMC_USE_32_BIT
144 /*-----------------------------------------------------------------
146 . The driver can be entered at any of the following entry points.
148 .------------------------------------------------------------------ */
150 extern int eth_init(bd_t *bd);
151 extern void eth_halt(void);
152 extern int eth_rx(void);
153 extern int eth_send(volatile void *packet, int length);
157 . This is called by register_netdev(). It is responsible for
158 . checking the portlist for the SMC9000 series chipset. If it finds
159 . one, then it will initialize the device, find the hardware information,
160 . and sets up the appropriate device parameters.
161 . NOTE: Interrupts are *OFF* when this procedure is called.
163 . NB:This shouldn't be static since it is referred to externally.
168 . This is called by unregister_netdev(). It is responsible for
169 . cleaning up before the driver is finally unregistered and discarded.
171 void smc_destructor(void);
174 . The kernel calls this function when someone wants to use the device,
175 . typically 'ifconfig ethX up'.
177 static int smc_open(bd_t *bd);
181 . This is called by the kernel in response to 'ifconfig ethX down'. It
182 . is responsible for cleaning up everything that the open routine
183 . does, and maybe putting the card into a powerdown state.
185 static int smc_close(void);
188 . Configures the PHY through the MII Management interface
190 #ifndef CONFIG_SMC91111_EXT_PHY
191 static void smc_phy_configure(void);
192 #endif /* !CONFIG_SMC91111_EXT_PHY */
195 . This is a separate procedure to handle the receipt of a packet, to
196 . leave the interrupt code looking slightly cleaner
198 static int smc_rcv(void);
200 /* See if a MAC address is defined in the current environment. If so use it. If not
201 . print a warning and set the environment and other globals with the default.
202 . If an EEPROM is present it really should be consulted.
204 int smc_get_ethaddr(bd_t *bd);
205 int get_rom_mac(char *v_rom_mac);
208 ------------------------------------------------------------
212 ------------------------------------------------------------
215 static char smc_mac_addr[] = {0x02, 0x80, 0xad, 0x20, 0x31, 0xb8};
218 * This function must be called before smc_open() if you want to override
219 * the default mac address.
222 void smc_set_mac_addr(const char *addr) {
225 for (i=0; i < sizeof(smc_mac_addr); i++){
226 smc_mac_addr[i] = addr[i];
231 * smc_get_macaddr is no longer used. If you want to override the default
232 * mac address, call smc_get_mac_addr as a part of the board initialization.
236 void smc_get_macaddr( byte *addr ) {
237 /* MAC ADDRESS AT FLASHBLOCK 1 / OFFSET 0x10 */
238 unsigned char *dnp1110_mac = (unsigned char *) (0xE8000000 + 0x20010);
242 for (i=0; i<6; i++) {
243 addr[0] = *(dnp1110_mac+0);
244 addr[1] = *(dnp1110_mac+1);
245 addr[2] = *(dnp1110_mac+2);
246 addr[3] = *(dnp1110_mac+3);
247 addr[4] = *(dnp1110_mac+4);
248 addr[5] = *(dnp1110_mac+5);
253 /***********************************************
254 * Show available memory *
255 ***********************************************/
256 void dump_memory_info(void)
261 old_bank = SMC_inw(BANK_SELECT)&0xF;
264 mem_info = SMC_inw( MIR_REG );
265 PRINTK2("Memory: %4d available\n", (mem_info >> 8)*2048);
267 SMC_SELECT_BANK(old_bank);
270 . A rather simple routine to print out a packet for debugging purposes.
273 static void print_packet( byte *, int );
276 #define tx_done(dev) 1
279 /* this does a soft reset on the device */
280 static void smc_reset( void );
282 /* Enable Interrupts, Receive, and Transmit */
283 static void smc_enable( void );
285 /* this puts the device in an inactive state */
286 static void smc_shutdown( void );
288 /* Routines to Read and Write the PHY Registers across the
289 MII Management Interface
292 #ifndef CONFIG_SMC91111_EXT_PHY
293 static word smc_read_phy_register(byte phyreg);
294 static void smc_write_phy_register(byte phyreg, word phydata);
295 #endif /* !CONFIG_SMC91111_EXT_PHY */
298 static int poll4int (byte mask, int timeout)
300 int tmo = get_timer (0) + timeout * CFG_HZ;
302 word old_bank = SMC_inw (BSR_REG);
304 PRINTK2 ("Polling...\n");
306 while ((SMC_inw (SMC91111_INT_REG) & mask) == 0) {
307 if (get_timer (0) >= tmo) {
313 /* restore old bank selection */
314 SMC_SELECT_BANK (old_bank);
322 /* Only one release command at a time, please */
323 static inline void smc_wait_mmu_release_complete (void)
327 /* assume bank 2 selected */
328 while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
329 udelay (1); /* Wait until not busy */
336 . Function: smc_reset( void )
338 . This sets the SMC91111 chip to its normal state, hopefully from whatever
339 . mess that any other DOS driver has put it in.
341 . Maybe I should reset more registers to defaults in here? SOFTRST should
345 . 1. send a SOFT RESET
346 . 2. wait for it to finish
347 . 3. enable autorelease mode
348 . 4. reset the memory management unit
349 . 5. clear all interrupts
352 static void smc_reset (void)
354 PRINTK2 ("%s:smc_reset\n", SMC_DEV_NAME);
356 /* This resets the registers mostly to defaults, but doesn't
357 affect EEPROM. That seems unnecessary */
359 SMC_outw (RCR_SOFTRST, RCR_REG);
361 /* Setup the Configuration Register */
362 /* This is necessary because the CONFIG_REG is not affected */
363 /* by a soft reset */
366 #if defined(CONFIG_SMC91111_EXT_PHY)
367 SMC_outw (CONFIG_DEFAULT | CONFIG_EXT_PHY, CONFIG_REG);
369 SMC_outw (CONFIG_DEFAULT, CONFIG_REG);
373 /* Release from possible power-down state */
374 /* Configuration register is not affected by Soft Reset */
375 SMC_outw (SMC_inw (CONFIG_REG) | CONFIG_EPH_POWER_EN, CONFIG_REG);
379 /* this should pause enough for the chip to be happy */
382 /* Disable transmit and receive functionality */
383 SMC_outw (RCR_CLEAR, RCR_REG);
384 SMC_outw (TCR_CLEAR, TCR_REG);
386 /* set the control register */
388 SMC_outw (CTL_DEFAULT, CTL_REG);
392 smc_wait_mmu_release_complete ();
393 SMC_outw (MC_RESET, MMU_CMD_REG);
394 while (SMC_inw (MMU_CMD_REG) & MC_BUSY)
395 udelay (1); /* Wait until not busy */
397 /* Note: It doesn't seem that waiting for the MMU busy is needed here,
398 but this is a place where future chipsets _COULD_ break. Be wary
399 of issuing another MMU command right after this */
401 /* Disable all interrupts */
402 SMC_outb (0, IM_REG);
406 . Function: smc_enable
407 . Purpose: let the chip talk to the outside work
409 . 1. Enable the transmitter
410 . 2. Enable the receiver
411 . 3. Enable interrupts
413 static void smc_enable()
415 PRINTK2("%s:smc_enable\n", SMC_DEV_NAME);
416 SMC_SELECT_BANK( 0 );
417 /* see the header file for options in TCR/RCR DEFAULT*/
418 SMC_outw( TCR_DEFAULT, TCR_REG );
419 SMC_outw( RCR_DEFAULT, RCR_REG );
422 /* smc_write_phy_register(PHY_CNTL_REG, 0x0000); */
426 . Function: smc_shutdown
427 . Purpose: closes down the SMC91xxx chip.
429 . 1. zero the interrupt mask
430 . 2. clear the enable receive flag
431 . 3. clear the enable xmit flags
434 . (1) maybe utilize power down mode.
435 . Why not yet? Because while the chip will go into power down mode,
436 . the manual says that it will wake up in response to any I/O requests
437 . in the register space. Empirical results do not show this working.
439 static void smc_shutdown()
441 PRINTK2(CARDNAME ":smc_shutdown\n");
443 /* no more interrupts for me */
444 SMC_SELECT_BANK( 2 );
445 SMC_outb( 0, IM_REG );
447 /* and tell the card to stay away from that nasty outside world */
448 SMC_SELECT_BANK( 0 );
449 SMC_outb( RCR_CLEAR, RCR_REG );
450 SMC_outb( TCR_CLEAR, TCR_REG );
455 . Function: smc_hardware_send_packet(struct net_device * )
457 . This sends the actual packet to the SMC9xxx chip.
460 . First, see if a saved_skb is available.
461 . ( this should NOT be called if there is no 'saved_skb'
462 . Now, find the packet number that the chip allocated
463 . Point the data pointers at it in memory
464 . Set the length word in the chip's memory
465 . Dump the packet to chip memory
466 . Check if a last byte is needed ( odd length packet )
467 . if so, set the control flag right
468 . Tell the card to send it
469 . Enable the transmit interrupt, so I know if it failed
470 . Free the kernel data if I actually sent it.
472 static int smc_send_packet (volatile void *packet, int packet_length)
475 unsigned long ioaddr;
484 PRINTK3 ("%s:smc_hardware_send_packet\n", SMC_DEV_NAME);
486 length = ETH_ZLEN < packet_length ? packet_length : ETH_ZLEN;
489 ** The MMU wants the number of pages to be the number of 256 bytes
490 ** 'pages', minus 1 ( since a packet can't ever have 0 pages :) )
492 ** The 91C111 ignores the size bits, but the code is left intact
493 ** for backwards and future compatibility.
495 ** Pkt size for allocating is data length +6 (for additional status
496 ** words, length and ctl!)
498 ** If odd size then last byte is included in this header.
500 numPages = ((length & 0xfffe) + 6);
501 numPages >>= 8; /* Divide by 256 */
504 printf ("%s: Far too big packet error. \n", SMC_DEV_NAME);
508 /* now, try to allocate the memory */
510 SMC_outw (MC_ALLOC | numPages, MMU_CMD_REG);
512 /* FIXME: the ALLOC_INT bit never gets set *
513 * so the following will always give a *
514 * memory allocation error. *
515 * same code works in armboot though *
521 time_out = MEMORY_WAIT_TIME;
523 status = SMC_inb (SMC91111_INT_REG);
524 if (status & IM_ALLOC_INT) {
525 /* acknowledge the interrupt */
526 SMC_outb (IM_ALLOC_INT, SMC91111_INT_REG);
529 } while (--time_out);
532 PRINTK2 ("%s: memory allocation, try %d failed ...\n",
534 if (try < SMC_ALLOC_MAX_TRY)
540 PRINTK2 ("%s: memory allocation, try %d succeeded ...\n",
543 /* I can send the packet now.. */
545 ioaddr = SMC_BASE_ADDRESS;
547 buf = (byte *) packet;
549 /* If I get here, I _know_ there is a packet slot waiting for me */
550 packet_no = SMC_inb (AR_REG);
551 if (packet_no & AR_FAILED) {
552 /* or isn't there? BAD CHIP! */
553 printf ("%s: Memory allocation failed. \n", SMC_DEV_NAME);
557 /* we have a packet address, so tell the card to use it */
558 SMC_outb (packet_no, PN_REG);
560 /* point to the beginning of the packet */
561 SMC_outw (PTR_AUTOINC, PTR_REG);
563 PRINTK3 ("%s: Trying to xmit packet of length %x\n",
564 SMC_DEV_NAME, length);
567 printf ("Transmitting Packet\n");
568 print_packet (buf, length);
571 /* send the packet length ( +6 for status, length and ctl byte )
572 and the status word ( set to zeros ) */
574 SMC_outl ((length + 6) << 16, SMC91111_DATA_REG);
576 SMC_outw (0, SMC91111_DATA_REG);
577 /* send the packet length ( +6 for status words, length, and ctl */
578 SMC_outw ((length + 6), SMC91111_DATA_REG);
581 /* send the actual data
582 . I _think_ it's faster to send the longs first, and then
583 . mop up by sending the last word. It depends heavily
584 . on alignment, at least on the 486. Maybe it would be
585 . a good idea to check which is optimal? But that could take
586 . almost as much time as is saved?
589 SMC_outsl (SMC91111_DATA_REG, buf, length >> 2);
591 SMC_outw (*((word *) (buf + (length & 0xFFFFFFFC))),
594 SMC_outsw (SMC91111_DATA_REG, buf, (length) >> 1);
595 #endif /* USE_32_BIT */
597 /* Send the last byte, if there is one. */
598 if ((length & 1) == 0) {
599 SMC_outw (0, SMC91111_DATA_REG);
601 SMC_outw (buf[length - 1] | 0x2000, SMC91111_DATA_REG);
604 /* and let the chipset deal with it */
605 SMC_outw (MC_ENQUEUE, MMU_CMD_REG);
607 /* poll for TX INT */
608 if (poll4int (IM_TX_INT, SMC_TX_TIMEOUT)) {
610 PRINTK2 ("%s: TX timeout, sending failed...\n", SMC_DEV_NAME);
613 SMC_outw (MC_FREEPKT, MMU_CMD_REG);
615 /* wait for MMU getting ready (low) */
616 while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
620 PRINTK2 ("MMU ready\n");
626 SMC_outw (IM_TX_INT, SMC91111_INT_REG);
627 PRINTK2 ("%s: Sent packet of length %d \n", SMC_DEV_NAME,
631 SMC_outw (MC_FREEPKT, MMU_CMD_REG);
633 /* wait for MMU getting ready (low) */
634 while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
638 PRINTK2 ("MMU ready\n");
646 /*-------------------------------------------------------------------------
648 | smc_destructor( struct net_device * dev )
650 | dev, pointer to the device structure
655 ---------------------------------------------------------------------------
657 void smc_destructor()
659 PRINTK2(CARDNAME ":smc_destructor\n");
664 * Open and Initialize the board
666 * Set up everything, reset the card, etc ..
669 static int smc_open (bd_t * bd)
673 PRINTK2 ("%s:smc_open\n", SMC_DEV_NAME);
675 /* reset the hardware */
679 /* Configure the PHY */
680 #ifndef CONFIG_SMC91111_EXT_PHY
681 smc_phy_configure ();
684 /* conservative setting (10Mbps, HalfDuplex, no AutoNeg.) */
685 /* SMC_SELECT_BANK(0); */
686 /* SMC_outw(0, RPC_REG); */
689 err = smc_get_ethaddr (bd); /* set smc_mac_addr, and sync it with u-boot globals */
691 memset (bd->bi_enetaddr, 0, 6); /* hack to make error stick! upper code will abort if not set */
692 return (-1); /* upper code ignores this, but NOT bi_enetaddr */
695 for (i = 0; i < 6; i += 2) {
698 address = smc_mac_addr[i + 1] << 8;
699 address |= smc_mac_addr[i];
700 SMC_outw (address, ADDR0_REG + i);
703 for (i = 0; i < 6; i++)
704 SMC_outb (smc_mac_addr[i], ADDR0_REG + i);
710 /*-------------------------------------------------------------
712 . smc_rcv - receive a packet from the card
714 . There is ( at least ) a packet waiting to be read from
718 . o If an error, record it
719 . o otherwise, read in the packet
720 --------------------------------------------------------------
734 packet_number = SMC_inw( RXFIFO_REG );
736 if ( packet_number & RXFIFO_REMPTY ) {
741 PRINTK3("%s:smc_rcv\n", SMC_DEV_NAME);
742 /* start reading from the start of the packet */
743 SMC_outw( PTR_READ | PTR_RCV | PTR_AUTOINC, PTR_REG );
745 /* First two words are status and packet_length */
747 stat_len = SMC_inl(SMC91111_DATA_REG);
748 status = stat_len & 0xffff;
749 packet_length = stat_len >> 16;
751 status = SMC_inw( SMC91111_DATA_REG );
752 packet_length = SMC_inw( SMC91111_DATA_REG );
755 packet_length &= 0x07ff; /* mask off top bits */
757 PRINTK2("RCV: STATUS %4x LENGTH %4x\n", status, packet_length );
759 if ( !(status & RS_ERRORS ) ){
760 /* Adjust for having already read the first two words */
761 packet_length -= 4; /*4; */
764 /* set odd length for bug in LAN91C111, */
765 /* which never sets RS_ODDFRAME */
770 PRINTK3(" Reading %d dwords (and %d bytes) \n",
771 packet_length >> 2, packet_length & 3 );
772 /* QUESTION: Like in the TX routine, do I want
773 to send the DWORDs or the bytes first, or some
774 mixture. A mixture might improve already slow PIO
776 SMC_insl( SMC91111_DATA_REG , NetRxPackets[0], packet_length >> 2 );
777 /* read the left over bytes */
778 if (packet_length & 3) {
781 byte *tail = (byte *)(NetRxPackets[0] + (packet_length & ~3));
782 dword leftover = SMC_inl(SMC91111_DATA_REG);
783 for (i=0; i<(packet_length & 3); i++)
784 *tail++ = (byte) (leftover >> (8*i)) & 0xff;
787 PRINTK3(" Reading %d words and %d byte(s) \n",
788 (packet_length >> 1 ), packet_length & 1 );
789 SMC_insw(SMC91111_DATA_REG , NetRxPackets[0], packet_length >> 1);
791 #endif /* USE_32_BIT */
794 printf("Receiving Packet\n");
795 print_packet( NetRxPackets[0], packet_length );
803 while ( SMC_inw( MMU_CMD_REG ) & MC_BUSY )
804 udelay(1); /* Wait until not busy */
806 /* error or good, tell the card to get rid of this packet */
807 SMC_outw( MC_RELEASE, MMU_CMD_REG );
809 while ( SMC_inw( MMU_CMD_REG ) & MC_BUSY )
810 udelay(1); /* Wait until not busy */
813 /* Pass the packet up to the protocol layers. */
814 NetReceive(NetRxPackets[0], packet_length);
815 return packet_length;
823 /*----------------------------------------------------
826 . this makes the board clean up everything that it can
827 . and not talk to the outside world. Caused by
828 . an 'ifconfig ethX down'
830 -----------------------------------------------------*/
831 static int smc_close()
833 PRINTK2("%s:smc_close\n", SMC_DEV_NAME);
835 /* clear everything */
843 /*------------------------------------------------------------
844 . Modify a bit in the LAN91C111 register set
845 .-------------------------------------------------------------*/
846 static word smc_modify_regbit(int bank, int ioaddr, int reg,
847 unsigned int bit, int val)
851 SMC_SELECT_BANK( bank );
853 regval = SMC_inw( reg );
859 SMC_outw( regval, 0 );
864 /*------------------------------------------------------------
865 . Retrieve a bit in the LAN91C111 register set
866 .-------------------------------------------------------------*/
867 static int smc_get_regbit(int bank, int ioaddr, int reg, unsigned int bit)
869 SMC_SELECT_BANK( bank );
870 if ( SMC_inw( reg ) & bit)
877 /*------------------------------------------------------------
878 . Modify a LAN91C111 register (word access only)
879 .-------------------------------------------------------------*/
880 static void smc_modify_reg(int bank, int ioaddr, int reg, word val)
882 SMC_SELECT_BANK( bank );
883 SMC_outw( val, reg );
887 /*------------------------------------------------------------
888 . Retrieve a LAN91C111 register (word access only)
889 .-------------------------------------------------------------*/
890 static int smc_get_reg(int bank, int ioaddr, int reg)
892 SMC_SELECT_BANK( bank );
893 return(SMC_inw( reg ));
898 /*---PHY CONTROL AND CONFIGURATION----------------------------------------- */
902 /*------------------------------------------------------------
903 . Debugging function for viewing MII Management serial bitstream
904 .-------------------------------------------------------------*/
905 static void smc_dump_mii_stream (byte * bits, int size)
910 for (i = 0; i < size; ++i) {
911 printf ("%d", i % 10);
915 for (i = 0; i < size; ++i) {
916 if (bits[i] & MII_MDOE)
923 for (i = 0; i < size; ++i) {
924 if (bits[i] & MII_MDO)
931 for (i = 0; i < size; ++i) {
932 if (bits[i] & MII_MDI)
942 /*------------------------------------------------------------
943 . Reads a register from the MII Management serial interface
944 .-------------------------------------------------------------*/
945 #ifndef CONFIG_SMC91111_EXT_PHY
946 static word smc_read_phy_register (byte phyreg)
956 byte phyaddr = SMC_PHY_ADDR;
958 /* 32 consecutive ones on MDO to establish sync */
959 for (i = 0; i < 32; ++i)
960 bits[clk_idx++] = MII_MDOE | MII_MDO;
962 /* Start code <01> */
963 bits[clk_idx++] = MII_MDOE;
964 bits[clk_idx++] = MII_MDOE | MII_MDO;
966 /* Read command <10> */
967 bits[clk_idx++] = MII_MDOE | MII_MDO;
968 bits[clk_idx++] = MII_MDOE;
970 /* Output the PHY address, msb first */
972 for (i = 0; i < 5; ++i) {
974 bits[clk_idx++] = MII_MDOE | MII_MDO;
976 bits[clk_idx++] = MII_MDOE;
978 /* Shift to next lowest bit */
982 /* Output the phy register number, msb first */
984 for (i = 0; i < 5; ++i) {
986 bits[clk_idx++] = MII_MDOE | MII_MDO;
988 bits[clk_idx++] = MII_MDOE;
990 /* Shift to next lowest bit */
994 /* Tristate and turnaround (2 bit times) */
996 /*bits[clk_idx++] = 0; */
998 /* Input starts at this bit time */
1001 /* Will input 16 bits */
1002 for (i = 0; i < 16; ++i)
1003 bits[clk_idx++] = 0;
1005 /* Final clock bit */
1006 bits[clk_idx++] = 0;
1008 /* Save the current bank */
1009 oldBank = SMC_inw (BANK_SELECT);
1012 SMC_SELECT_BANK (3);
1014 /* Get the current MII register value */
1015 mii_reg = SMC_inw (MII_REG);
1017 /* Turn off all MII Interface bits */
1018 mii_reg &= ~(MII_MDOE | MII_MCLK | MII_MDI | MII_MDO);
1020 /* Clock all 64 cycles */
1021 for (i = 0; i < sizeof bits; ++i) {
1022 /* Clock Low - output data */
1023 SMC_outw (mii_reg | bits[i], MII_REG);
1024 udelay (SMC_PHY_CLOCK_DELAY);
1027 /* Clock Hi - input data */
1028 SMC_outw (mii_reg | bits[i] | MII_MCLK, MII_REG);
1029 udelay (SMC_PHY_CLOCK_DELAY);
1030 bits[i] |= SMC_inw (MII_REG) & MII_MDI;
1033 /* Return to idle state */
1034 /* Set clock to low, data to low, and output tristated */
1035 SMC_outw (mii_reg, MII_REG);
1036 udelay (SMC_PHY_CLOCK_DELAY);
1038 /* Restore original bank select */
1039 SMC_SELECT_BANK (oldBank);
1041 /* Recover input data */
1043 for (i = 0; i < 16; ++i) {
1046 if (bits[input_idx++] & MII_MDI)
1050 #if (SMC_DEBUG > 2 )
1051 printf ("smc_read_phy_register(): phyaddr=%x,phyreg=%x,phydata=%x\n",
1052 phyaddr, phyreg, phydata);
1053 smc_dump_mii_stream (bits, sizeof bits);
1060 /*------------------------------------------------------------
1061 . Writes a register to the MII Management serial interface
1062 .-------------------------------------------------------------*/
1063 static void smc_write_phy_register (byte phyreg, word phydata)
1071 byte phyaddr = SMC_PHY_ADDR;
1073 /* 32 consecutive ones on MDO to establish sync */
1074 for (i = 0; i < 32; ++i)
1075 bits[clk_idx++] = MII_MDOE | MII_MDO;
1077 /* Start code <01> */
1078 bits[clk_idx++] = MII_MDOE;
1079 bits[clk_idx++] = MII_MDOE | MII_MDO;
1081 /* Write command <01> */
1082 bits[clk_idx++] = MII_MDOE;
1083 bits[clk_idx++] = MII_MDOE | MII_MDO;
1085 /* Output the PHY address, msb first */
1087 for (i = 0; i < 5; ++i) {
1089 bits[clk_idx++] = MII_MDOE | MII_MDO;
1091 bits[clk_idx++] = MII_MDOE;
1093 /* Shift to next lowest bit */
1097 /* Output the phy register number, msb first */
1099 for (i = 0; i < 5; ++i) {
1101 bits[clk_idx++] = MII_MDOE | MII_MDO;
1103 bits[clk_idx++] = MII_MDOE;
1105 /* Shift to next lowest bit */
1109 /* Tristate and turnaround (2 bit times) */
1110 bits[clk_idx++] = 0;
1111 bits[clk_idx++] = 0;
1113 /* Write out 16 bits of data, msb first */
1115 for (i = 0; i < 16; ++i) {
1117 bits[clk_idx++] = MII_MDOE | MII_MDO;
1119 bits[clk_idx++] = MII_MDOE;
1121 /* Shift to next lowest bit */
1125 /* Final clock bit (tristate) */
1126 bits[clk_idx++] = 0;
1128 /* Save the current bank */
1129 oldBank = SMC_inw (BANK_SELECT);
1132 SMC_SELECT_BANK (3);
1134 /* Get the current MII register value */
1135 mii_reg = SMC_inw (MII_REG);
1137 /* Turn off all MII Interface bits */
1138 mii_reg &= ~(MII_MDOE | MII_MCLK | MII_MDI | MII_MDO);
1140 /* Clock all cycles */
1141 for (i = 0; i < sizeof bits; ++i) {
1142 /* Clock Low - output data */
1143 SMC_outw (mii_reg | bits[i], MII_REG);
1144 udelay (SMC_PHY_CLOCK_DELAY);
1147 /* Clock Hi - input data */
1148 SMC_outw (mii_reg | bits[i] | MII_MCLK, MII_REG);
1149 udelay (SMC_PHY_CLOCK_DELAY);
1150 bits[i] |= SMC_inw (MII_REG) & MII_MDI;
1153 /* Return to idle state */
1154 /* Set clock to low, data to low, and output tristated */
1155 SMC_outw (mii_reg, MII_REG);
1156 udelay (SMC_PHY_CLOCK_DELAY);
1158 /* Restore original bank select */
1159 SMC_SELECT_BANK (oldBank);
1161 #if (SMC_DEBUG > 2 )
1162 printf ("smc_write_phy_register(): phyaddr=%x,phyreg=%x,phydata=%x\n",
1163 phyaddr, phyreg, phydata);
1164 smc_dump_mii_stream (bits, sizeof bits);
1167 #endif /* !CONFIG_SMC91111_EXT_PHY */
1170 /*------------------------------------------------------------
1171 . Waits the specified number of milliseconds - kernel friendly
1172 .-------------------------------------------------------------*/
1173 #ifndef CONFIG_SMC91111_EXT_PHY
1174 static void smc_wait_ms(unsigned int ms)
1178 #endif /* !CONFIG_SMC91111_EXT_PHY */
1181 /*------------------------------------------------------------
1182 . Configures the specified PHY using Autonegotiation. Calls
1183 . smc_phy_fixed() if the user has requested a certain config.
1184 .-------------------------------------------------------------*/
1185 #ifndef CONFIG_SMC91111_EXT_PHY
1186 static void smc_phy_configure ()
1190 word my_phy_caps; /* My PHY capabilities */
1191 word my_ad_caps; /* My Advertised capabilities */
1192 word status = 0; /*;my status = 0 */
1195 PRINTK3 ("%s:smc_program_phy()\n", SMC_DEV_NAME);
1198 /* Get the detected phy address */
1199 phyaddr = SMC_PHY_ADDR;
1201 /* Reset the PHY, setting all other bits to zero */
1202 smc_write_phy_register (PHY_CNTL_REG, PHY_CNTL_RST);
1204 /* Wait for the reset to complete, or time out */
1205 timeout = 6; /* Wait up to 3 seconds */
1207 if (!(smc_read_phy_register (PHY_CNTL_REG)
1209 /* reset complete */
1213 smc_wait_ms (500); /* wait 500 millisecs */
1217 printf ("%s:PHY reset timed out\n", SMC_DEV_NAME);
1218 goto smc_phy_configure_exit;
1221 /* Read PHY Register 18, Status Output */
1222 /* lp->lastPhy18 = smc_read_phy_register(PHY_INT_REG); */
1224 /* Enable PHY Interrupts (for register 18) */
1225 /* Interrupts listed here are disabled */
1226 smc_write_phy_register (PHY_INT_REG, 0xffff);
1228 /* Configure the Receive/Phy Control register */
1229 SMC_SELECT_BANK (0);
1230 SMC_outw (RPC_DEFAULT, RPC_REG);
1232 /* Copy our capabilities from PHY_STAT_REG to PHY_AD_REG */
1233 my_phy_caps = smc_read_phy_register (PHY_STAT_REG);
1234 my_ad_caps = PHY_AD_CSMA; /* I am CSMA capable */
1236 if (my_phy_caps & PHY_STAT_CAP_T4)
1237 my_ad_caps |= PHY_AD_T4;
1239 if (my_phy_caps & PHY_STAT_CAP_TXF)
1240 my_ad_caps |= PHY_AD_TX_FDX;
1242 if (my_phy_caps & PHY_STAT_CAP_TXH)
1243 my_ad_caps |= PHY_AD_TX_HDX;
1245 if (my_phy_caps & PHY_STAT_CAP_TF)
1246 my_ad_caps |= PHY_AD_10_FDX;
1248 if (my_phy_caps & PHY_STAT_CAP_TH)
1249 my_ad_caps |= PHY_AD_10_HDX;
1251 /* Update our Auto-Neg Advertisement Register */
1252 smc_write_phy_register (PHY_AD_REG, my_ad_caps);
1254 PRINTK2 ("%s:phy caps=%x\n", SMC_DEV_NAME, my_phy_caps);
1255 PRINTK2 ("%s:phy advertised caps=%x\n", SMC_DEV_NAME, my_ad_caps);
1257 /* Restart auto-negotiation process in order to advertise my caps */
1258 smc_write_phy_register (PHY_CNTL_REG,
1259 PHY_CNTL_ANEG_EN | PHY_CNTL_ANEG_RST);
1261 /* Wait for the auto-negotiation to complete. This may take from */
1262 /* 2 to 3 seconds. */
1263 /* Wait for the reset to complete, or time out */
1264 timeout = 20; /* Wait up to 10 seconds */
1266 status = smc_read_phy_register (PHY_STAT_REG);
1267 if (status & PHY_STAT_ANEG_ACK) {
1268 /* auto-negotiate complete */
1272 smc_wait_ms (500); /* wait 500 millisecs */
1274 /* Restart auto-negotiation if remote fault */
1275 if (status & PHY_STAT_REM_FLT) {
1276 printf ("%s:PHY remote fault detected\n",
1279 /* Restart auto-negotiation */
1280 printf ("%s:PHY restarting auto-negotiation\n",
1282 smc_write_phy_register (PHY_CNTL_REG,
1291 printf ("%s:PHY auto-negotiate timed out\n", SMC_DEV_NAME);
1292 printf ("%s:PHY auto-negotiate timed out\n", SMC_DEV_NAME);
1296 /* Fail if we detected an auto-negotiate remote fault */
1297 if (status & PHY_STAT_REM_FLT) {
1298 printf ("%s:PHY remote fault detected\n", SMC_DEV_NAME);
1299 printf ("%s:PHY remote fault detected\n", SMC_DEV_NAME);
1303 /* Re-Configure the Receive/Phy Control register */
1304 SMC_outw (RPC_DEFAULT, RPC_REG);
1306 smc_phy_configure_exit:
1309 #endif /* !CONFIG_SMC91111_EXT_PHY */
1313 static void print_packet( byte * buf, int length )
1320 printf("Packet of length %d \n", length );
1323 lines = length / 16;
1324 remainder = length % 16;
1326 for ( i = 0; i < lines ; i ++ ) {
1329 for ( cur = 0; cur < 8; cur ++ ) {
1334 printf("%02x%02x ", a, b );
1338 for ( i = 0; i < remainder/2 ; i++ ) {
1343 printf("%02x%02x ", a, b );
1351 int eth_init(bd_t *bd) {
1352 return (smc_open(bd));
1363 int eth_send(volatile void *packet, int length) {
1364 return smc_send_packet(packet, length);
1367 int smc_get_ethaddr (bd_t * bd)
1369 int env_size, rom_valid, env_present = 0, reg;
1370 char *s = NULL, *e, *v_mac, es[] = "11:22:33:44:55:66";
1371 uchar s_env_mac[64], v_env_mac[6], v_rom_mac[6];
1373 env_size = getenv_r ("ethaddr", s_env_mac, sizeof (s_env_mac));
1374 if ((env_size > 0) && (env_size < sizeof (es))) { /* exit if env is bad */
1375 printf ("\n*** ERROR: ethaddr is not set properly!!\n");
1384 for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */
1385 v_env_mac[reg] = s ? simple_strtoul (s, &e, 16) : 0;
1387 s = (*e) ? e + 1 : e;
1390 rom_valid = get_rom_mac (v_rom_mac); /* get ROM mac value if any */
1392 if (!env_present) { /* if NO env */
1393 if (rom_valid) { /* but ROM is valid */
1395 sprintf (s_env_mac, "%02X:%02X:%02X:%02X:%02X:%02X",
1396 v_mac[0], v_mac[1], v_mac[2], v_mac[3],
1397 v_mac[4], v_mac[5]);
1398 setenv ("ethaddr", s_env_mac);
1399 } else { /* no env, bad ROM */
1400 printf ("\n*** ERROR: ethaddr is NOT set !!\n");
1403 } else { /* good env, don't care ROM */
1404 v_mac = v_env_mac; /* always use a good env over a ROM */
1407 if (env_present && rom_valid) { /* if both env and ROM are good */
1408 if (memcmp (v_env_mac, v_rom_mac, 6) != 0) {
1409 printf ("\nWarning: MAC addresses don't match:\n");
1410 printf ("\tHW MAC address: "
1411 "%02X:%02X:%02X:%02X:%02X:%02X\n",
1412 v_rom_mac[0], v_rom_mac[1],
1413 v_rom_mac[2], v_rom_mac[3],
1414 v_rom_mac[4], v_rom_mac[5] );
1415 printf ("\t\"ethaddr\" value: "
1416 "%02X:%02X:%02X:%02X:%02X:%02X\n",
1417 v_env_mac[0], v_env_mac[1],
1418 v_env_mac[2], v_env_mac[3],
1419 v_env_mac[4], v_env_mac[5]) ;
1420 debug ("### Set MAC addr from environment\n");
1423 memcpy (bd->bi_enetaddr, v_mac, 6); /* update global address to match env (allows env changing) */
1424 smc_set_mac_addr (v_mac); /* use old function to update smc default */
1428 int get_rom_mac (char *v_rom_mac)
1430 int is_rom_present = 0;
1432 #ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */
1433 char hw_mac_addr[] = { 0x02, 0x80, 0xad, 0x20, 0x31, 0xb8 };
1435 memcpy (v_rom_mac, hw_mac_addr, 6);
1438 if (is_rom_present) {
1439 /* if eeprom contents are valid
1440 * extract mac address into hw_mac_addr, 8 or 16 bit accesses
1441 * memcpy (v_rom_mac, hc_mac_addr, 6);
1445 memset (v_rom_mac, 0, 6);
1449 #endif /* CONFIG_DRIVER_SMC91111 */