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(+)
diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c index bf8600814690..ec46add1d35c 100644 --- a/drivers/net/ftgmac100.c +++ b/drivers/net/ftgmac100.c @@ -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 */