diff options
| author | Daode Huang <huangdaode@hisilicon.com> | 2016-09-29 18:09:10 +0100 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-03 11:40:57 -0400 |
| commit | 6771cbf9446121cb7b64810395391712a03b899d (patch) | |
| tree | 0acca7d166363fcc732a633e6bbab09ca1bca6e9 /drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | |
| parent | 0e97cd4e4632e385b3bf7edcf0c803de0487212a (diff) | |
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/ethernet/hisilicon/hns/hns_dsaf_rcb.c')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 16 |
1 files changed, 16 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; } |