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path: root/drivers/net/tsec.c
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Diffstat (limited to 'drivers/net/tsec.c')
-rw-r--r--drivers/net/tsec.c88
1 files changed, 46 insertions, 42 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index 289229a42..e354fad21 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -28,13 +28,10 @@ DECLARE_GLOBAL_DATA_PTR;
static uint rx_idx; /* index of the current RX buffer */
static uint tx_idx; /* index of the current TX buffer */
-typedef volatile struct rtxbd {
- txbd8_t txbd[TX_BUF_CNT];
- rxbd8_t rxbd[PKTBUFSRX];
-} RTXBD;
-
#ifdef __GNUC__
-static RTXBD rtx __attribute__ ((aligned(8)));
+static struct txbd8 __iomem txbd[TX_BUF_CNT] __aligned(8);
+static struct rxbd8 __iomem rxbd[PKTBUFSRX] __aligned(8);
+
#else
#error "rtx must be 64-bit aligned"
#endif
@@ -275,10 +272,11 @@ void redundant_init(struct eth_device *dev)
clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
do {
+ uint16_t status;
tsec_send(dev, (void *)pkt, sizeof(pkt));
/* Wait for buffer to be received */
- for (t = 0; rtx.rxbd[rx_idx].status & RXBD_EMPTY; t++) {
+ for (t = 0; in_be16(&rxbd[rx_idx].status) & RXBD_EMPTY; t++) {
if (t >= 10 * TOUT_LOOP) {
printf("%s: tsec: rx error\n", dev->name);
break;
@@ -288,9 +286,11 @@ void redundant_init(struct eth_device *dev)
if (!memcmp(pkt, (void *)NetRxPackets[rx_idx], sizeof(pkt)))
fail = 0;
- rtx.rxbd[rx_idx].length = 0;
- rtx.rxbd[rx_idx].status =
- RXBD_EMPTY | (((rx_idx + 1) == PKTBUFSRX) ? RXBD_WRAP : 0);
+ out_be16(&rxbd[rx_idx].length, 0);
+ status = RXBD_EMPTY;
+ if ((rx_idx + 1) == PKTBUFSRX)
+ status |= RXBD_WRAP;
+ out_be16(&rxbd[rx_idx].status, status);
rx_idx = (rx_idx + 1) % PKTBUFSRX;
if (in_be32(&regs->ievent) & IEVENT_BSY) {
@@ -319,9 +319,10 @@ void redundant_init(struct eth_device *dev)
*/
static void startup_tsec(struct eth_device *dev)
{
- int i;
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
+ uint16_t status;
+ int i;
/* reset the indices to zero */
rx_idx = 0;
@@ -331,24 +332,26 @@ static void startup_tsec(struct eth_device *dev)
#endif
/* Point to the buffer descriptors */
- out_be32(&regs->tbase, (unsigned int)(&rtx.txbd[tx_idx]));
- out_be32(&regs->rbase, (unsigned int)(&rtx.rxbd[rx_idx]));
+ out_be32(&regs->tbase, (u32)&txbd[0]);
+ out_be32(&regs->rbase, (u32)&rxbd[0]);
/* Initialize the Rx Buffer descriptors */
for (i = 0; i < PKTBUFSRX; i++) {
- rtx.rxbd[i].status = RXBD_EMPTY;
- rtx.rxbd[i].length = 0;
- rtx.rxbd[i].bufptr = (uint) NetRxPackets[i];
+ out_be16(&rxbd[i].status, RXBD_EMPTY);
+ out_be16(&rxbd[i].length, 0);
+ out_be32(&rxbd[i].bufptr, (u32)NetRxPackets[i]);
}
- rtx.rxbd[PKTBUFSRX - 1].status |= RXBD_WRAP;
+ status = in_be16(&rxbd[PKTBUFSRX - 1].status);
+ out_be16(&rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP);
/* Initialize the TX Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++) {
- rtx.txbd[i].status = 0;
- rtx.txbd[i].length = 0;
- rtx.txbd[i].bufptr = 0;
+ out_be16(&txbd[i].status, 0);
+ out_be16(&txbd[i].length, 0);
+ out_be32(&txbd[i].bufptr, 0);
}
- rtx.txbd[TX_BUF_CNT - 1].status |= TXBD_WRAP;
+ status = in_be16(&txbd[TX_BUF_CNT - 1].status);
+ out_be16(&txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP);
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
svr = get_svr();
@@ -372,29 +375,31 @@ static void startup_tsec(struct eth_device *dev)
*/
static int tsec_send(struct eth_device *dev, void *packet, int length)
{
- int i;
- int result = 0;
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
+ uint16_t status;
+ int result = 0;
+ int i;
/* Find an empty buffer descriptor */
- for (i = 0; rtx.txbd[tx_idx].status & TXBD_READY; i++) {
+ for (i = 0; in_be16(&txbd[tx_idx].status) & TXBD_READY; i++) {
if (i >= TOUT_LOOP) {
debug("%s: tsec: tx buffers full\n", dev->name);
return result;
}
}
- rtx.txbd[tx_idx].bufptr = (uint) packet;
- rtx.txbd[tx_idx].length = length;
- rtx.txbd[tx_idx].status |=
- (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT);
+ out_be32(&txbd[tx_idx].bufptr, (u32)packet);
+ out_be16(&txbd[tx_idx].length, length);
+ status = in_be16(&txbd[tx_idx].status);
+ out_be16(&txbd[tx_idx].status, status |
+ (TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT));
/* Tell the DMA to go */
out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
/* Wait for buffer to be transmitted */
- for (i = 0; rtx.txbd[tx_idx].status & TXBD_READY; i++) {
+ for (i = 0; in_be16(&txbd[tx_idx].status) & TXBD_READY; i++) {
if (i >= TOUT_LOOP) {
debug("%s: tsec: tx error\n", dev->name);
return result;
@@ -402,34 +407,33 @@ static int tsec_send(struct eth_device *dev, void *packet, int length)
}
tx_idx = (tx_idx + 1) % TX_BUF_CNT;
- result = rtx.txbd[tx_idx].status & TXBD_STATS;
+ result = in_be16(&txbd[tx_idx].status) & TXBD_STATS;
return result;
}
static int tsec_recv(struct eth_device *dev)
{
- int length;
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
- while (!(rtx.rxbd[rx_idx].status & RXBD_EMPTY)) {
-
- length = rtx.rxbd[rx_idx].length;
+ while (!(in_be16(&rxbd[rx_idx].status) & RXBD_EMPTY)) {
+ int length = in_be16(&rxbd[rx_idx].length);
+ uint16_t status = in_be16(&rxbd[rx_idx].status);
/* Send the packet up if there were no errors */
- if (!(rtx.rxbd[rx_idx].status & RXBD_STATS)) {
+ if (!(status & RXBD_STATS))
NetReceive(NetRxPackets[rx_idx], length - 4);
- } else {
- printf("Got error %x\n",
- (rtx.rxbd[rx_idx].status & RXBD_STATS));
- }
+ else
+ printf("Got error %x\n", (status & RXBD_STATS));
- rtx.rxbd[rx_idx].length = 0;
+ out_be16(&rxbd[rx_idx].length, 0);
+ status = RXBD_EMPTY;
/* Set the wrap bit if this is the last element in the list */
- rtx.rxbd[rx_idx].status =
- RXBD_EMPTY | (((rx_idx + 1) == PKTBUFSRX) ? RXBD_WRAP : 0);
+ if ((rx_idx + 1) == PKTBUFSRX)
+ status |= RXBD_WRAP;
+ out_be16(&rxbd[rx_idx].status, status);
rx_idx = (rx_idx + 1) % PKTBUFSRX;
}
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