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drivers: net: xgene: Add workaround for errata 10GE_1 

This patch implements workaround for errata 10GE_1:
10Gb Ethernet port FIFO threshold default values are incorrect.

Signed-off-by: Quan Nguyen <qnguyen@apm.com>
Signed-off-by: Toan Le <toanle@apm.com>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Fushen Chen <fchen@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Quan Nguyen 2017-03-15 13:27:19 -07:00 committed by David S. Miller
parent 0a0400c309
commit 7eac928c19
2 changed files with 12 additions and 0 deletions
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7
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c
View File

@ -341,8 +341,15 @@ static void xgene_xgmac_init(struct xgene_enet_pdata *pdata)
xgene_enet_rd_csr(pdata, XG_RSIF_CONFIG_REG_ADDR, &data);
data |= CFG_RSIF_FPBUFF_TIMEOUT_EN;
/* Errata 10GE_1 - FIFO threshold default value incorrect */
RSIF_CLE_BUFF_THRESH_SET(&data, XG_RSIF_CLE_BUFF_THRESH);
xgene_enet_wr_csr(pdata, XG_RSIF_CONFIG_REG_ADDR, data);
/* Errata 10GE_1 - FIFO threshold default value incorrect */
xgene_enet_rd_csr(pdata, XG_RSIF_CONFIG1_REG_ADDR, &data);
RSIF_PLC_CLE_BUFF_THRESH_SET(&data, XG_RSIF_PLC_CLE_BUFF_THRESH);
xgene_enet_wr_csr(pdata, XG_RSIF_CONFIG1_REG_ADDR, data);
xgene_enet_rd_csr(pdata, XG_ENET_SPARE_CFG_REG_ADDR, &data);
data |= BIT(12);
xgene_enet_wr_csr(pdata, XG_ENET_SPARE_CFG_REG_ADDR, data);

5
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h
View File

@ -65,6 +65,11 @@
#define XG_DEF_PAUSE_THRES 0x390
#define XG_DEF_PAUSE_OFF_THRES 0x2c0
#define XG_RSIF_CONFIG_REG_ADDR 0x00a0
#define XG_RSIF_CLE_BUFF_THRESH 0x3
#define RSIF_CLE_BUFF_THRESH_SET(dst, val) xgene_set_bits(dst, val, 0, 3)
#define XG_RSIF_CONFIG1_REG_ADDR 0x00b8
#define XG_RSIF_PLC_CLE_BUFF_THRESH 0x1
#define RSIF_PLC_CLE_BUFF_THRESH_SET(dst, val) xgene_set_bits(dst, val, 0, 2)
#define XCLE_BYPASS_REG0_ADDR 0x0160
#define XCLE_BYPASS_REG1_ADDR 0x0164
#define XG_CFG_BYPASS_ADDR 0x0204