. Rolf Offermanns <rof@sysgo.de>
.
. Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
- . Developed by Simple Network Magic Corporation (SNMC)
+ . Developed by Simple Network Magic Corporation (SNMC)
. Copyright (C) 1996 by Erik Stahlman (ES)
.
. This program is free software; you can redistribute it and/or modify
.
. This program is distributed in the hope that it will be useful,
. but WITHOUT ANY WARRANTY; without even the implied warranty of
- . MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ . MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
. GNU General Public License for more details.
.
. You should have received a copy of the GNU General Public License
. along with this program; if not, write to the Free Software
- . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ . Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
.
. Information contained in this file was obtained from the LAN91C111
. manual from SMC. To get a copy, if you really want one, you can find
. EEPROM interface for configuration
.
. Arguments:
- . io = for the base address
+ . io = for the base address
. irq = for the IRQ
.
. author:
- . Erik Stahlman ( erik@vt.edu )
- . Daris A Nevil ( dnevil@snmc.com )
+ . Erik Stahlman ( erik@vt.edu )
+ . Daris A Nevil ( dnevil@snmc.com )
.
.
. Hardware multicast code from Peter Cammaert ( pc@denkart.be )
.
. Sources:
- . o SMSC LAN91C111 databook (www.smsc.com)
- . o smc9194.c by Erik Stahlman
- . o skeleton.c by Donald Becker ( becker@cesdis.gsfc.nasa.gov )
+ . o SMSC LAN91C111 databook (www.smsc.com)
+ . o smc9194.c by Erik Stahlman
+ . o skeleton.c by Donald Becker ( becker@cesdis.gsfc.nasa.gov )
.
. History:
- . 06/19/03 Richard Woodruff Made u-boot environment aware and added mac addr checks.
+ . 06/19/03 Richard Woodruff Made u-boot environment aware and added mac addr checks.
. 10/17/01 Marco Hasewinkel Modify for DNP/1110
- . 07/25/01 Woojung Huh Modify for ADS Bitsy
- . 04/25/01 Daris A Nevil Initial public release through SMSC
- . 03/16/01 Daris A Nevil Modified smc9194.c for use with LAN91C111
+ . 07/25/01 Woojung Huh Modify for ADS Bitsy
+ . 04/25/01 Daris A Nevil Initial public release through SMSC
+ . 03/16/01 Daris A Nevil Modified smc9194.c for use with LAN91C111
----------------------------------------------------------------------------*/
#include <common.h>
/*------------------------------------------------------------------------
.
- . The internal workings of the driver. If you are changing anything
+ . The internal workings of the driver. If you are changing anything
. here with the SMC stuff, you should have the datasheet and know
. what you are doing.
.
#define ETH_ZLEN 60
-#ifdef CONFIG_SMC_USE_32_BIT
+#ifdef CONFIG_SMC_USE_32_BIT
#define USE_32_BIT 1
#else
#undef USE_32_BIT
#endif /* 0 */
/***********************************************
- * Show available memory *
+ * Show available memory *
***********************************************/
void dump_memory_info(void)
{
/*
. Function: smc_reset( void )
. Purpose:
- . This sets the SMC91111 chip to its normal state, hopefully from whatever
- . mess that any other DOS driver has put it in.
+ . This sets the SMC91111 chip to its normal state, hopefully from whatever
+ . mess that any other DOS driver has put it in.
.
. Maybe I should reset more registers to defaults in here? SOFTRST should
. do that for me.
. (1) maybe utilize power down mode.
. Why not yet? Because while the chip will go into power down mode,
. the manual says that it will wake up in response to any I/O requests
- . in the register space. Empirical results do not show this working.
+ . in the register space. Empirical results do not show this working.
*/
static void smc_shutdown()
{
. This sends the actual packet to the SMC9xxx chip.
.
. Algorithm:
- . First, see if a saved_skb is available.
+ . First, see if a saved_skb is available.
. ( this should NOT be called if there is no 'saved_skb'
. Now, find the packet number that the chip allocated
. Point the data pointers at it in memory
. Dump the packet to chip memory
. Check if a last byte is needed ( odd length packet )
. if so, set the control flag right
- . Tell the card to send it
+ . Tell the card to send it
. Enable the transmit interrupt, so I know if it failed
- . Free the kernel data if I actually sent it.
+ . Free the kernel data if I actually sent it.
*/
static int smc_send_packet (volatile void *packet, int packet_length)
{
int try = 0;
int time_out;
byte status;
+ byte saved_pnr;
+ word saved_ptr;
+ /* save PTR and PNR registers before manipulation */
+ SMC_SELECT_BANK (2);
+ saved_pnr = SMC_inb( PN_REG );
+ saved_ptr = SMC_inw( PTR_REG );
PRINTK3 ("%s:smc_hardware_send_packet\n", SMC_DEV_NAME);
SMC_outw (MC_ALLOC | numPages, MMU_CMD_REG);
/* FIXME: the ALLOC_INT bit never gets set *
- * so the following will always give a *
- * memory allocation error. *
- * same code works in armboot though *
+ * so the following will always give a *
+ * memory allocation error. *
+ * same code works in armboot though *
* -ro
*/
/* we have a packet address, so tell the card to use it */
SMC_outb (packet_no, PN_REG);
+ /* do not write new ptr value if Write data fifo not empty */
+ while ( saved_ptr & PTR_NOTEMPTY )
+ printf ("Write data fifo not empty!\n");
+
/* point to the beginning of the packet */
SMC_outw (PTR_AUTOINC, PTR_REG);
/* send the actual data
. I _think_ it's faster to send the longs first, and then
. mop up by sending the last word. It depends heavily
- . on alignment, at least on the 486. Maybe it would be
+ . on alignment, at least on the 486. Maybe it would be
. a good idea to check which is optimal? But that could take
. almost as much time as is saved?
*/
SMC_outsw (SMC91111_DATA_REG, buf, (length) >> 1);
#endif /* USE_32_BIT */
- /* Send the last byte, if there is one. */
+ /* Send the last byte, if there is one. */
if ((length & 1) == 0) {
SMC_outw (0, SMC91111_DATA_REG);
} else {
SMC_outw (MC_ENQUEUE, MMU_CMD_REG);
/* poll for TX INT */
- if (poll4int (IM_TX_INT, SMC_TX_TIMEOUT)) {
+ /* if (poll4int (IM_TX_INT, SMC_TX_TIMEOUT)) { */
+ /* poll for TX_EMPTY INT - autorelease enabled */
+ if (poll4int(IM_TX_EMPTY_INT, SMC_TX_TIMEOUT)) {
/* sending failed */
PRINTK2 ("%s: TX timeout, sending failed...\n", SMC_DEV_NAME);
/* release packet */
- SMC_outw (MC_FREEPKT, MMU_CMD_REG);
+ /* no need to release, MMU does that now */
+ /* SMC_outw (MC_FREEPKT, MMU_CMD_REG); */
/* wait for MMU getting ready (low) */
while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
return 0;
} else {
/* ack. int */
- SMC_outb (IM_TX_INT, SMC91111_INT_REG);
+ SMC_outb (IM_TX_EMPTY_INT, SMC91111_INT_REG);
+ /* SMC_outb (IM_TX_INT, SMC91111_INT_REG); */
PRINTK2 ("%s: Sent packet of length %d \n", SMC_DEV_NAME,
length);
/* release packet */
- SMC_outw (MC_FREEPKT, MMU_CMD_REG);
+ /* no need to release, MMU does that now */
+ /* SMC_outw (MC_FREEPKT, MMU_CMD_REG); */
/* wait for MMU getting ready (low) */
while (SMC_inw (MMU_CMD_REG) & MC_BUSY) {
}
+ /* restore previously saved registers */
+ SMC_outb( saved_pnr, PN_REG );
+ SMC_outw( saved_ptr, PTR_REG );
+
return length;
}
err = smc_get_ethaddr (bd); /* set smc_mac_addr, and sync it with u-boot globals */
if (err < 0) {
- memset (bd->bi_enetaddr, 0, 6); /* hack to make error stick! upper code will abort if not set */
+ memset (bd->bi_enetaddr, 0, 6); /* hack to make error stick! upper code will abort if not set */
return (-1); /* upper code ignores this, but NOT bi_enetaddr */
}
#ifdef USE_32_BIT
*/
static int smc_rcv()
{
- int packet_number;
+ int packet_number;
word status;
word packet_length;
- int is_error = 0;
+ int is_error = 0;
#ifdef USE_32_BIT
dword stat_len;
#endif
+ byte saved_pnr;
+ word saved_ptr;
SMC_SELECT_BANK(2);
+ /* save PTR and PTR registers */
+ saved_pnr = SMC_inb( PN_REG );
+ saved_ptr = SMC_inw( PTR_REG );
+
packet_number = SMC_inw( RXFIFO_REG );
if ( packet_number & RXFIFO_REMPTY ) {
status = stat_len & 0xffff;
packet_length = stat_len >> 16;
#else
- status = SMC_inw( SMC91111_DATA_REG );
- packet_length = SMC_inw( SMC91111_DATA_REG );
+ status = SMC_inw( SMC91111_DATA_REG );
+ packet_length = SMC_inw( SMC91111_DATA_REG );
#endif
packet_length &= 0x07ff; /* mask off top bits */
/* QUESTION: Like in the TX routine, do I want
to send the DWORDs or the bytes first, or some
mixture. A mixture might improve already slow PIO
- performance */
+ performance */
SMC_insl( SMC91111_DATA_REG , NetRxPackets[0], packet_length >> 2 );
/* read the left over bytes */
if (packet_length & 3) {
while ( SMC_inw( MMU_CMD_REG ) & MC_BUSY )
udelay(1); /* Wait until not busy */
+ /* restore saved registers */
+ SMC_outb( saved_pnr, PN_REG );
+ SMC_outw( saved_ptr, PTR_REG );
+
if (!is_error) {
/* Pass the packet up to the protocol layers. */
NetReceive(NetRxPackets[0], packet_length);
. smc_close
.
. this makes the board clean up everything that it can
- . and not talk to the outside world. Caused by
+ . and not talk to the outside world. Caused by
. an 'ifconfig ethX down'
.
-----------------------------------------------------*/
/* Update our Auto-Neg Advertisement Register */
smc_write_phy_register (PHY_AD_REG, my_ad_caps);
+ /* Read the register back. Without this, it appears that when */
+ /* auto-negotiation is restarted, sometimes it isn't ready and */
+ /* the link does not come up. */
+ smc_read_phy_register(PHY_AD_REG);
+
PRINTK2 ("%s:phy caps=%x\n", SMC_DEV_NAME, my_phy_caps);
PRINTK2 ("%s:phy advertised caps=%x\n", SMC_DEV_NAME, my_ad_caps);
#if SMC_DEBUG > 2
static void print_packet( byte * buf, int length )
{
-#if 0
int i;
int remainder;
int lines;
}
printf("\n");
#endif
-#endif
}
#endif
s = s_env_mac;
}
- for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */
+ for (reg = 0; reg < 6; ++reg) { /* turn string into mac value */
v_env_mac[reg] = s ? simple_strtoul (s, &e, 16) : 0;
if (s)
s = (*e) ? e + 1 : e;
v_mac = v_env_mac; /* always use a good env over a ROM */
}
- if (env_present && rom_valid) { /* if both env and ROM are good */
+ if (env_present && rom_valid) { /* if both env and ROM are good */
if (memcmp (v_env_mac, v_rom_mac, 6) != 0) {
printf ("\nWarning: MAC addresses don't match:\n");
printf ("\tHW MAC address: "
}
memcpy (bd->bi_enetaddr, v_mac, 6); /* update global address to match env (allows env changing) */
smc_set_mac_addr (v_mac); /* use old function to update smc default */
+ PRINTK("Using MAC Address %02X:%02X:%02X:%02X:%02X:%02X\n", v_mac[0], v_mac[1],
+ v_mac[2], v_mac[3], v_mac[4], v_mac[5]);
return (0);
}
int get_rom_mac (char *v_rom_mac)
{
- int is_rom_present = 0;
-
#ifdef HARDCODE_MAC /* used for testing or to supress run time warnings */
char hw_mac_addr[] = { 0x02, 0x80, 0xad, 0x20, 0x31, 0xb8 };
memcpy (v_rom_mac, hw_mac_addr, 6);
return (1);
#else
- if (is_rom_present) {
- /* if eeprom contents are valid
- * extract mac address into hw_mac_addr, 8 or 16 bit accesses
- * memcpy (v_rom_mac, hc_mac_addr, 6);
- * return(1);
- */
+ int i;
+ SMC_SELECT_BANK (1);
+ for (i=0; i<6; i++)
+ {
+ v_rom_mac[i] = SMC_inb (ADDR0_REG + i);
}
- memset (v_rom_mac, 0, 6);
- return (0);
+ return (1);
#endif
}
#endif /* CONFIG_DRIVER_SMC91111 */
projects / platform / kernel / u-boot.git / blobdiff