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Commit 87ff7e1f authored by lipeng's avatar lipeng Committed by David S. Miller
Browse files

net: hns: Modify GMAC init TX threshold value 



This patch reduces GMAC TX threshold value to avoid gmac
hang-up with speed 100M/duplex half.

Signed-off-by: default avatarlipeng <lipeng321@huawei.com>
Signed-off-by: default avatarJinchuanTian <tianjinchuan1@huawei.com>
Reviewed-by: default avatarYisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ba2d0791

drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c

+6 −0
Original line number Diff line number Diff line
@@ -325,6 +325,12 @@ static void hns_gmac_init(void *mac_drv) 
	hns_gmac_tx_loop_pkt_dis(mac_drv);

	if (drv->mac_cb->mac_type == HNAE_PORT_DEBUG)

		hns_gmac_set_uc_match(mac_drv, 0);



	/* reduce gmac tx water line to avoid gmac hang-up

	 * in speed 100M and duplex half.

	 */

	dsaf_set_dev_field(drv, GMAC_TX_WATER_LINE_REG, GMAC_TX_WATER_LINE_MASK,

			   GMAC_TX_WATER_LINE_SHIFT, 8);

}



void hns_gmac_update_stats(void *mac_drv)

drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h

+4 −0
Original line number Diff line number Diff line
@@ -466,6 +466,7 @@ 


#define GMAC_DUPLEX_TYPE_REG			0x0008UL

#define GMAC_FD_FC_TYPE_REG			0x000CUL

#define GMAC_TX_WATER_LINE_REG			0x0010UL

#define GMAC_FC_TX_TIMER_REG			0x001CUL

#define GMAC_FD_FC_ADDR_LOW_REG			0x0020UL

#define GMAC_FD_FC_ADDR_HIGH_REG		0x0024UL
@@ -912,6 +913,9 @@ 


#define GMAC_DUPLEX_TYPE_B 0



#define GMAC_TX_WATER_LINE_MASK		((1UL << 8) - 1)

#define GMAC_TX_WATER_LINE_SHIFT	0



#define GMAC_FC_TX_TIMER_S 0

#define GMAC_FC_TX_TIMER_M 0xffff