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ravb: remove tx buffer addr 4byte alilgnment restriction for R-Car Gen3

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This patch sets from two descriptor to one descriptor because R-Car Gen3
does not have the 4 bytes alignment restriction of the transmission buffer.

Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kazuya Mizuguchi
2018-09-19 10:06:21 +02:00
committed by David S. Miller
parent f46f33a679
commit f543305da9
2 changed files with 91 additions and 56 deletions
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6
drivers/net/ethernet/renesas/ravb.h
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@@ -954,7 +954,10 @@ enum RAVB_QUEUE {
#define RX_QUEUE_OFFSET 4
#define NUM_RX_QUEUE 2
#define NUM_TX_QUEUE 2
#define NUM_TX_DESC 2 /* TX descriptors per packet */
/* TX descriptors per packet */
#define NUM_TX_DESC_GEN2 2
#define NUM_TX_DESC_GEN3 1
struct ravb_tstamp_skb {
struct list_head list;
@@ -1033,6 +1036,7 @@ struct ravb_private {
unsigned no_avb_link:1;
unsigned avb_link_active_low:1;
unsigned wol_enabled:1;
int num_tx_desc; /* TX descriptors per packet */
};
static inline u32 ravb_read(struct net_device *ndev, enum ravb_reg reg)