]> git.baikalelectronics.ru Git - kernel.git/commit
net: hns3: add handshake with hardware while doing reset
authorHuazhong Tan <tanhuazhong@huawei.com>
Tue, 28 May 2019 09:02:59 +0000 (17:02 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 29 May 2019 00:39:01 +0000 (17:39 -0700)
commit64191f5012a19a7b51df1300ea1f089ca25feebb
tree6517d21aaa39f0cc1120f1283ab2f592a1047486
parente351ef01ef60e28b1c5bffd6a38d814343f5375b
net: hns3: add handshake with hardware while doing reset

When reset happens, the hardware reset should begin after the
driver has finished its preparatory work, otherwise it may cause
some hardware error.

Before Hardware's reset, it will wait for the driver to write
bit HCLGE_NIC_CMQ_ENABLE of register HCLGE_NIC_CSQ_DEPTH_REG
to 1, while the driver finishes its preparatory work will do that.
BTW, since some cases this register will be cleared, so it needs
some sync time before driver's writing.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c