When frame larger than local RX buffer is received, it is split and handled
by two buffer descriptors. Prior to this patch the FEC driver discarded
contents of a buffer descriptor without the 'LAST' bit set, so the first
part of the frame was lost in case of larger frames. This fix allows to
safely combine the two pieces into the whole frame.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
int fec512x_miiphy_write(char *devname, uint8 phyAddr, uint8 regAddr, uint16 data);
int mpc512x_fec_init_phy(struct eth_device *dev, bd_t * bis);
int fec512x_miiphy_write(char *devname, uint8 phyAddr, uint8 regAddr, uint16 data);
int mpc512x_fec_init_phy(struct eth_device *dev, bd_t * bis);
+static uchar rx_buff[FEC_MAX_PKT_SIZE];
+static int rx_buff_idx = 0;
+
/********************************************************************/
#if (DEBUG & 0x2)
static void mpc512x_fec_phydump (char *devname)
/********************************************************************/
#if (DEBUG & 0x2)
static void mpc512x_fec_phydump (char *devname)
fec->eth->op_pause = 0x00010020;
/* Frame length=1518; MII mode */
fec->eth->op_pause = 0x00010020;
/* Frame length=1518; MII mode */
- fec->eth->r_cntrl = 0x05ee000c;
+ fec->eth->r_cntrl = 0x05ee0024;
/* Half-duplex, heartbeat disabled */
fec->eth->x_cntrl = 0x00000000;
/* Half-duplex, heartbeat disabled */
fec->eth->x_cntrl = 0x00000000;
mpc512x_fec_priv *fec = (mpc512x_fec_priv *)dev->priv;
volatile FEC_RBD *pRbd = &fec->bdBase->rbd[fec->rbdIndex];
unsigned long ievent;
mpc512x_fec_priv *fec = (mpc512x_fec_priv *)dev->priv;
volatile FEC_RBD *pRbd = &fec->bdBase->rbd[fec->rbdIndex];
unsigned long ievent;
- int frame_length, len = 0;
- uchar buff[FEC_MAX_PKT_SIZE];
#if (DEBUG & 0x1)
printf ("mpc512x_fec_recv %d Start...\n", fec->rbdIndex);
#if (DEBUG & 0x1)
printf ("mpc512x_fec_recv %d Start...\n", fec->rbdIndex);
}
if (!(pRbd->status & FEC_RBD_EMPTY)) {
}
if (!(pRbd->status & FEC_RBD_EMPTY)) {
- if ((pRbd->status & FEC_RBD_LAST) &&
- !(pRbd->status & FEC_RBD_ERR) &&
+ if (!(pRbd->status & FEC_RBD_ERR) &&
((pRbd->dataLength - 4) > 14)) {
/*
* Get buffer size
*/
((pRbd->dataLength - 4) > 14)) {
/*
* Get buffer size
*/
- frame_length = pRbd->dataLength - 4;
-
+ if (pRbd->status & FEC_RBD_LAST)
+ frame_length = pRbd->dataLength - 4;
+ else
+ frame_length = pRbd->dataLength;
#if (DEBUG & 0x20)
{
int i;
#if (DEBUG & 0x20)
{
int i;
- printf ("recv data hdr:");
+ printf ("recv data length 0x%08x data hdr: ",
+ pRbd->dataLength);
for (i = 0; i < 14; i++)
printf ("%x ", *((uint8*)pRbd->dataPointer + i));
printf("\n");
}
#endif
for (i = 0; i < 14; i++)
printf ("%x ", *((uint8*)pRbd->dataPointer + i));
printf("\n");
}
#endif
/*
* Fill the buffer and pass it to upper layers
*/
/*
* Fill the buffer and pass it to upper layers
*/
- memcpy (buff, (void*)pRbd->dataPointer, frame_length);
- NetReceive ((uchar*)buff, frame_length);
- len = frame_length;
+ memcpy (&rx_buff[rx_buff_idx], (void*)pRbd->dataPointer,
+ frame_length - rx_buff_idx);
+ rx_buff_idx = frame_length;
+
+ if (pRbd->status & FEC_RBD_LAST) {
+ NetReceive ((uchar*)rx_buff, frame_length);
+ rx_buff_idx = 0;
+ }
/* Try to fill Buffer Descriptors */
fec->eth->r_des_active = 0x01000000; /* Descriptor polling active */
/* Try to fill Buffer Descriptors */
fec->eth->r_des_active = 0x01000000; /* Descriptor polling active */
}
/********************************************************************/
}
/********************************************************************/