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-rw-r--r--drivers/net/zynq_gem.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c
index 5f2f87d352..cfd14665a7 100644
--- a/drivers/net/zynq_gem.c
+++ b/drivers/net/zynq_gem.c
@@ -578,6 +578,7 @@ static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
struct zynq_gem_priv *priv = dev_get_priv(dev);
struct emac_bd *current_bd = &priv->rx_bd[priv->rxbd_current];
struct emac_bd *first_bd;
+ dma_addr_t addr;
if (current_bd->status & ZYNQ_GEM_RXBUF_SOF_MASK) {
priv->rx_first_buf = priv->rxbd_current;
@@ -592,6 +593,17 @@ static int zynq_gem_free_pkt(struct udevice *dev, uchar *packet, int length)
first_bd->status = 0xF0000000;
}
+ /* Flush the cache for the packet as well */
+#if defined(CONFIG_PHYS_64BIT)
+ addr = (dma_addr_t)((current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK)
+ | ((dma_addr_t)current_bd->addr_hi << 32));
+#else
+ addr = current_bd->addr & ZYNQ_GEM_RXBUF_ADD_MASK;
+#endif
+ flush_dcache_range(addr, addr + roundup(PKTSIZE_ALIGN,
+ ARCH_DMA_MINALIGN));
+ barrier();
+
if ((++priv->rxbd_current) >= RX_BUF)
priv->rxbd_current = 0;