@@ -14,6 +14,7 @@
#include <dm.h>
#include <miiphy.h>
#include <net.h>
+#include <wait_bit.h>
#include <linux/io.h>
#include <linux/iopoll.h>
@@ -28,6 +29,9 @@
/* 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
@@ -401,6 +405,19 @@ static int ftgmac100_recv(struct udevice *dev, int flags, uchar **packetp)
return rxlen;
}
+static u32 ftgmac100_read_txdesc(const void *desc)
+{
+ const struct ftgmac100_txdes *txdes = desc;
+ ulong des_start = (ulong)txdes;
+ ulong des_end = des_start + roundup(sizeof(*txdes), ARCH_DMA_MINALIGN);
+
+ invalidate_dcache_range(des_start, des_end);
+
+ return txdes->txdes0;
+}
+
+BUILD_WAIT_FOR_BIT(ftgmac100_txdone, u32, ftgmac100_read_txdesc)
+
/*
* Send a data block via Ethernet
*/
@@ -414,6 +431,7 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length)
roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
ulong data_start;
ulong data_end;
+ int rc;
invalidate_dcache_range(des_start, des_end);
@@ -446,6 +464,12 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length)
/* Start transmit */
writel(1, &ftgmac100->txpd);
+ rc = wait_for_bit_ftgmac100_txdone(curr_des,
+ FTGMAC100_TXDES0_TXDMA_OWN, false,
+ FTGMAC100_TX_TIMEOUT_MS, true);
+ if (rc)
+ return rc;
+
debug("%s(): packet sent\n", __func__);
/* Move to next descriptor */
Signed-off-by: Cédric Le Goater <clg@kaod.org> --- Changes since v4 : - defined a custom wait_for_bit_*() macro drivers/net/ftgmac100.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)