Signed-off-by: Cédric Le Goater clg@kaod.org --- drivers/net/ftgmac100.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c index b46187b567c6..edf34c601c68 100644 --- a/drivers/net/ftgmac100.c +++ b/drivers/net/ftgmac100.c @@ -28,6 +28,9 @@ /* PKTBUFSTX/PKTBUFSRX must both be power of 2 */ #define PKTBUFSTX 4 /* must be power of 2 */
+/* Timeout for transmit */ +#define FTGMAC100_TX_TIMEOUT_MS 1000 + /* Timeout for a mdio read/write operation */ #define FTGMAC100_MDIO_TIMEOUT_USEC 10000
@@ -412,6 +415,7 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length) roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN); ulong data_start; ulong data_end; + ulong start;
invalidate_dcache_range(des_start, des_end);
@@ -444,6 +448,20 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length) /* Start transmit */ writel(1, &ftgmac100->txpd);
+ /* Wait until packet is transmitted */ + start = get_timer(0); + while (get_timer(start) < FTGMAC100_TX_TIMEOUT_MS) { + invalidate_dcache_range(des_start, des_end); + if (!(curr_des->txdes0 & FTGMAC100_TXDES0_TXDMA_OWN)) + break; + udelay(10); + } + + if (get_timer(start) >= FTGMAC100_TX_TIMEOUT_MS) { + dev_err(dev, "transmit timeout\n"); + return -ETIMEDOUT; + } + debug("%s(): packet sent\n", __func__);
/* Move to next descriptor */