| From 6dbc5cc93029eb031a1bcae8690392f5e39065f4 Mon Sep 17 00:00:00 2001 |
| From: Nguyen Hong Ky <nh-ky@jinso.co.jp> |
| Date: Mon, 7 Oct 2013 15:29:25 +0900 |
| Subject: net: sh_eth: Fix RX packets errors on R8A7740 |
| |
| This patch will fix RX packets errors when receiving big size |
| of data by set bit RNC = 1. |
| |
| RNC - Receive Enable Control |
| |
| 0: Upon completion of reception of one frame, the E-DMAC writes |
| the receive status to the descriptor and clears the RR bit in |
| EDRRR to 0. |
| |
| 1: Upon completion of reception of one frame, the E-DMAC writes |
| (writes back) the receive status to the descriptor. In addition, |
| the E-DMAC reads the next descriptor and prepares for reception |
| of the next frame. |
| |
| In addition, for get more stable when receiving packets, I set |
| maximum size for the transmit/receive FIFO and inserts padding |
| in receive data. |
| |
| Signed-off-by: Nguyen Hong Ky <nh-ky@jinso.co.jp> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| (cherry picked from commit 2c6221e4a5aab417cb18bef6f1130d1374240258) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| |
| Conflicts: |
| drivers/net/ethernet/renesas/sh_eth.c |
| --- |
| drivers/net/ethernet/renesas/sh_eth.c | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c |
| index dfb208f0..bfa7a201 100644 |
| --- a/drivers/net/ethernet/renesas/sh_eth.c |
| +++ b/drivers/net/ethernet/renesas/sh_eth.c |
| @@ -620,12 +620,16 @@ static struct sh_eth_cpu_data sh7734_data = { |
| .eesr_err_check = EESR_TWB1 | EESR_TWB | EESR_TABT | EESR_RABT | \ |
| EESR_RDE | EESR_RFRMER | EESR_TFE | EESR_TDE | \ |
| EESR_ECI, |
| + .fdr_value = 0x0000070f, |
| + .rmcr_value = 0x00000001, |
| |
| .apr = 1, |
| .mpr = 1, |
| .tpauser = 1, |
| .bculr = 1, |
| .hw_swap = 1, |
| + .rpadir = 1, |
| + .rpadir_value = 2 << 16, |
| .no_trimd = 1, |
| .no_ade = 1, |
| .tsu = 1, |
| -- |
| 1.8.4.3.gca3854a |
| |