diff options
| author | Daode Huang <huangdaode@hisilicon.com> | 2016-09-29 19:09:10 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-03 17:40:57 +0200 |
| commit | 6771cbf9446121cb7b64810395391712a03b899d (patch) | |
| tree | 0acca7d166363fcc732a633e6bbab09ca1bca6e9 /drivers/net | |
| parent | net: hns: fix port unavailable after hnae_reserve_buffer_map fail (diff) | |
| download | linux-6771cbf9446121cb7b64810395391712a03b899d.tar.xz linux-6771cbf9446121cb7b64810395391712a03b899d.zip | |
net: hns: bug fix about setting coalsecs-usecs to 0
When set rx/tx coalesce usecs to 0, the interrupt coalesce will be
disabled, but there is a interrupt rate limit which set to 1us, it
will cause no interrupt occurs. This patch disable interrupt limit
when sets coalsecs usecs to 0, and restores it to 1 in other case.
Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h | 4 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c index ef1107777c08..f0ed80d6ef9c 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c @@ -543,6 +543,22 @@ int hns_rcb_set_coalesce_usecs( "error: coalesce_usecs setting supports 0~1023us\n"); return -EINVAL; } + + if (!AE_IS_VER1(rcb_common->dsaf_dev->dsaf_ver)) { + if (timeout == 0) + /* set timeout to 0, Disable gap time */ + dsaf_set_reg_field(rcb_common->io_base, + RCB_INT_GAP_TIME_REG + port_idx * 4, + PPE_INT_GAPTIME_M, PPE_INT_GAPTIME_B, + 0); + else + /* set timeout non 0, restore gap time to 1 */ + dsaf_set_reg_field(rcb_common->io_base, + RCB_INT_GAP_TIME_REG + port_idx * 4, + PPE_INT_GAPTIME_M, PPE_INT_GAPTIME_B, + 1); + } + hns_rcb_set_port_timeout(rcb_common, port_idx, timeout); return 0; } diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h index 4b8b803822d1..878950a42e6c 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h @@ -417,6 +417,7 @@ #define RCB_CFG_OVERTIME_REG 0x9300 #define RCB_CFG_PKTLINE_INT_NUM_REG 0x9304 #define RCB_CFG_OVERTIME_INT_NUM_REG 0x9308 +#define RCB_INT_GAP_TIME_REG 0x9400 #define RCB_PORT_CFG_OVERTIME_REG 0x9430 #define RCB_RING_RX_RING_BASEADDR_L_REG 0x00000 @@ -898,6 +899,9 @@ #define PPE_CNT_CLR_CE_B 0 #define PPE_CNT_CLR_SNAP_EN_B 1 +#define PPE_INT_GAPTIME_B 0 +#define PPE_INT_GAPTIME_M 0x3ff + #define PPE_COMMON_CNT_CLR_CE_B 0 #define PPE_COMMON_CNT_CLR_SNAP_EN_B 1 #define RCB_COM_TSO_MODE_B 0 |