diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cs8900.c | 39 |
1 files changed, 23 insertions, 16 deletions
diff --git a/drivers/cs8900.c b/drivers/cs8900.c index d35332c..082434c 100644 --- a/drivers/cs8900.c +++ b/drivers/cs8900.c @@ -45,6 +45,7 @@ #if (CONFIG_COMMANDS & CFG_CMD_NET) +#undef DEBUG /* packet page register access functions */ @@ -99,6 +100,20 @@ static void eth_reset (void) /*NOP*/; } +static void eth_reginit (void) +{ + /* receive only error free packets addressed to this card */ + put_reg (PP_RxCTL, PP_RxCTL_IA | PP_RxCTL_Broadcast | PP_RxCTL_RxOK); + /* do not generate any interrupts on receive operations */ + put_reg (PP_RxCFG, 0); + /* do not generate any interrupts on transmit operations */ + put_reg (PP_TxCFG, 0); + /* do not generate any interrupts on buffer operations */ + put_reg (PP_BufCFG, 0); + /* enable transmitter/receiver mode */ + put_reg (PP_LineCTL, PP_LineCTL_Rx | PP_LineCTL_Tx); +} + void cs8900_get_enetaddr (uchar * addr) { int i; @@ -181,21 +196,7 @@ int eth_init (bd_t * bd) put_reg (PP_IA + 2, bd->bi_enetaddr[2] | (bd->bi_enetaddr[3] << 8)); put_reg (PP_IA + 4, bd->bi_enetaddr[4] | (bd->bi_enetaddr[5] << 8)); - /* receive only error free packets addressed to this card */ - put_reg (PP_RxCTL, PP_RxCTL_IA | PP_RxCTL_Broadcast | PP_RxCTL_RxOK); - - /* do not generate any interrupts on receive operations */ - put_reg (PP_RxCFG, 0); - - /* do not generate any interrupts on transmit operations */ - put_reg (PP_TxCFG, 0); - - /* do not generate any interrupts on buffer operations */ - put_reg (PP_BufCFG, 0); - - /* enable transmitter/receiver mode */ - put_reg (PP_LineCTL, PP_LineCTL_Rx | PP_LineCTL_Tx); - + eth_reginit (); return 0; } @@ -215,9 +216,10 @@ extern int eth_rx (void) status = CS8900_RTDATA; /* stat */ rxlen = CS8900_RTDATA; /* len */ +#ifdef DEBUG if (rxlen > PKTSIZE_ALIGN + PKTALIGN) printf ("packet too big!\n"); - +#endif for (addr = (unsigned short *) NetRxPackets[0], i = rxlen >> 1; i > 0; i--) *addr++ = CS8900_RTDATA; @@ -245,10 +247,13 @@ retry: /* Test to see if the chip has allocated memory for the packet */ if ((get_reg (PP_BusSTAT) & PP_BusSTAT_TxRDY) == 0) { /* Oops... this should not happen! */ +#ifdef DEBUG printf ("cs: unable to send packet; retrying...\n"); +#endif for (tmo = get_timer (0) + 5 * CFG_HZ; get_timer (0) < tmo;) /*NOP*/; eth_reset (); + eth_reginit (); goto retry; } @@ -266,7 +271,9 @@ retry: /* nothing */ ; if ((s & (PP_TER_CRS | PP_TER_TxOK)) != PP_TER_TxOK) { +#ifdef DEBUG printf ("\ntransmission error %#x\n", s); +#endif } return 0; |