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-rw-r--r--cpu/coldfire/fec.c154
1 files changed, 75 insertions, 79 deletions
diff --git a/cpu/coldfire/fec.c b/cpu/coldfire/fec.c
index 53a93c1..5062741 100644
--- a/cpu/coldfire/fec.c
+++ b/cpu/coldfire/fec.c
@@ -27,7 +27,6 @@
#include <command.h>
-
/**************************************************************
*
* FEC Ethernet Initialization Routine
@@ -50,18 +49,14 @@
#define FEC_RESET_DELAY 50000
-
/* Ethernet Transmit and Receive Buffers */
#define DBUF_LENGTH 1520
-
#define TX_BUF_CNT 2
-
#define TOUT_LOOP 100
-#define PKT_MAXBUF_SIZE 1518
-#define PKT_MINBUF_SIZE 64
-#define PKT_MAXBLR_SIZE 1520
-
+#define PKT_MAXBUF_SIZE 1518
+#define PKT_MINBUF_SIZE 64
+#define PKT_MAXBLR_SIZE 1520
#ifdef CONFIG_M5272
@@ -76,11 +71,10 @@
#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET)
-
static char txbuf[DBUF_LENGTH];
-static uint rxIdx; /* index of the current RX buffer */
-static uint txIdx; /* index of the current TX buffer */
+static uint rxIdx; /* index of the current RX buffer */
+static uint txIdx; /* index of the current TX buffer */
/*
* FEC Ethernet Tx and Rx buffer descriptors allocated at the
@@ -89,14 +83,14 @@ static uint txIdx; /* index of the current TX buffer */
*/
typedef volatile struct CommonBufferDescriptor {
- cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
- cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
+ cbd_t rxbd[PKTBUFSRX]; /* Rx BD */
+ cbd_t txbd[TX_BUF_CNT]; /* Tx BD */
} RTXBD;
static RTXBD *rtx = 0x380000;
-int eth_send(volatile void *packet, int length)
+int eth_send (volatile void *packet, int length)
{
int j, rc;
volatile fec_t *fecp = FEC_ADDR;
@@ -105,35 +99,37 @@ int eth_send(volatile void *packet, int length)
* Wait for ready
*/
j = 0;
- while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
- udelay(1);
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY)
+ && (j < TOUT_LOOP)) {
+ udelay (1);
j++;
}
- if (j>=TOUT_LOOP) {
- printf("TX not ready\n");
+ if (j >= TOUT_LOOP) {
+ printf ("TX not ready\n");
}
- rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
- rtx->txbd[txIdx].cbd_datlen = length;
+ rtx->txbd[txIdx].cbd_bufaddr = (uint) packet;
+ rtx->txbd[txIdx].cbd_datlen = length;
rtx->txbd[txIdx].cbd_sc |= BD_ENET_TX_READY | BD_ENET_TX_LAST;
/* Activate transmit Buffer Descriptor polling */
- fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
+ fecp->fec_x_des_active = 0x01000000; /* Descriptor polling active */
j = 0;
- while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
- udelay(1);
+ while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY)
+ && (j < TOUT_LOOP)) {
+ udelay (1);
j++;
}
- if (j>=TOUT_LOOP) {
- printf("TX timeout\n");
+ if (j >= TOUT_LOOP) {
+ printf ("TX timeout\n");
}
#ifdef ET_DEBUG
- printf("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
- __FILE__,__LINE__,__FUNCTION__,j,rtx->txbd[txIdx].cbd_sc,
- (rtx->txbd[txIdx].cbd_sc & 0x003C)>>2);
+ printf ("%s[%d] %s: cycles: %d status: %x retry cnt: %d\n",
+ __FILE__, __LINE__, __FUNCTION__, j, rtx->txbd[txIdx].cbd_sc,
+ (rtx->txbd[txIdx].cbd_sc & 0x003C) >> 2);
#endif
- /* return only status bits */;
+ /* return only status bits */ ;
rc = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS);
txIdx = (txIdx + 1) % TX_BUF_CNT;
@@ -141,48 +137,49 @@ int eth_send(volatile void *packet, int length)
return rc;
}
-int eth_rx(void)
+int eth_rx (void)
{
int length;
volatile fec_t *fecp = FEC_ADDR;
- for (;;)
- {
- /* section 16.9.23.2 */
- if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
- length = -1;
- break; /* nothing received - leave for() loop */
- }
+ for (;;) {
+ /* section 16.9.23.2 */
+ if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
+ length = -1;
+ break; /* nothing received - leave for() loop */
+ }
- length = rtx->rxbd[rxIdx].cbd_datlen;
+ length = rtx->rxbd[rxIdx].cbd_datlen;
- if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
+ if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
#ifdef ET_DEBUG
- printf("%s[%d] err: %x\n",
- __FUNCTION__,__LINE__,rtx->rxbd[rxIdx].cbd_sc);
+ printf ("%s[%d] err: %x\n",
+ __FUNCTION__, __LINE__,
+ rtx->rxbd[rxIdx].cbd_sc);
#endif
- } else {
- /* Pass the packet up to the protocol layers. */
- NetReceive(NetRxPackets[rxIdx], length - 4);
+ } else {
+ /* Pass the packet up to the protocol layers. */
+ NetReceive (NetRxPackets[rxIdx], length - 4);
+ }
+
+ /* Give the buffer back to the FEC. */
+ rtx->rxbd[rxIdx].cbd_datlen = 0;
+
+ /* wrap around buffer index when necessary */
+ if ((rxIdx + 1) >= PKTBUFSRX) {
+ rtx->rxbd[PKTBUFSRX - 1].cbd_sc =
+ (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
+ rxIdx = 0;
+ } else {
+ rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
+ rxIdx++;
+ }
+
+ /* Try to fill Buffer Descriptors */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
}
- /* Give the buffer back to the FEC. */
- rtx->rxbd[rxIdx].cbd_datlen = 0;
-
- /* wrap around buffer index when necessary */
- if ((rxIdx + 1) >= PKTBUFSRX) {
- rtx->rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
- rxIdx = 0;
- } else {
- rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
- rxIdx++;
- }
-
- /* Try to fill Buffer Descriptors */
- fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
- }
-
- return length;
+ return length;
}
@@ -191,7 +188,7 @@ int eth_init (bd_t * bd)
int i;
volatile fec_t *fecp = FEC_ADDR;
-
+
/* Whack a reset.
* A delay is required between a reset of the FEC block and
* initialization of other FEC registers because the reset takes
@@ -214,21 +211,21 @@ int eth_init (bd_t * bd)
/* We use strictly polling mode only
*/
fecp->fec_imask = 0;
-
+
/* Clear any pending interrupt */
fecp->fec_ievent = 0xffffffff;
-
- /* Set station address */
+
+ /* Set station address */
#define ea bd->bi_enetaddr
- fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) |
- (ea[2] << 8) | (ea[3] ) ;
- fecp->fec_addr_high = (ea[4] << 24) | (ea[5] << 16 ) ;
+ fecp->fec_addr_low = (ea[0] << 24) | (ea[1] << 16) |
+ (ea[2] << 8) | (ea[3]);
+ fecp->fec_addr_high = (ea[4] << 24) | (ea[5] << 16);
#undef ea
/* Clear multicast address hash table
*/
fecp->fec_hash_table_high = 0;
- fecp->fec_hash_table_low = 0;
+ fecp->fec_hash_table_low = 0;
/* Set maximum receive buffer size.
*/
@@ -246,8 +243,8 @@ int eth_init (bd_t * bd)
* Empty, Wrap
*/
for (i = 0; i < PKTBUFSRX; i++) {
- rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
- rtx->rxbd[i].cbd_datlen = 0; /* Reset */
+ rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+ rtx->rxbd[i].cbd_datlen = 0; /* Reset */
rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
}
rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
@@ -258,8 +255,8 @@ int eth_init (bd_t * bd)
* Last, Tx CRC
*/
for (i = 0; i < TX_BUF_CNT; i++) {
- rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
- rtx->txbd[i].cbd_datlen = 0; /* Reset */
+ rtx->txbd[i].cbd_sc = BD_ENET_TX_LAST | BD_ENET_TX_TC;
+ rtx->txbd[i].cbd_datlen = 0; /* Reset */
rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
}
rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
@@ -273,8 +270,8 @@ int eth_init (bd_t * bd)
*/
/* Half duplex mode */
- fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE<<16) | FEC_RCNTRL_MII_MODE;
- fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE<<16) | FEC_RCNTRL_MII_MODE;
+ fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE << 16) | FEC_RCNTRL_MII_MODE;
+ fecp->fec_r_cntrl = (PKT_MAXBUF_SIZE << 16) | FEC_RCNTRL_MII_MODE;
fecp->fec_x_cntrl = 0;
fecp->fec_mii_speed = 0;
@@ -284,17 +281,16 @@ int eth_init (bd_t * bd)
fecp->fec_ecntrl = FEC_ECNTRL_ETHER_EN;
/* And last, try to fill Rx Buffer Descriptors */
- fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
+ fecp->fec_r_des_active = 0x01000000; /* Descriptor polling active */
return 1;
}
-
-void eth_halt(void)
+void eth_halt (void)
{
volatile fec_t *fecp = FEC_ADDR;
+
fecp->fec_ecntrl = 0;
}
-
#endif
generated by cgit v1.1 at 2024-11-17 15:01:56 +0000