net: hns3: process H/W errors occurred before HNS dev initialization
authorShiju Jose <shiju.jose@huawei.com>
Thu, 13 Jun 2019 09:12:23 +0000 (17:12 +0800)
committerDavid S. Miller <davem@davemloft.net>
Sat, 15 Jun 2019 02:26:15 +0000 (19:26 -0700)
commite4193e24a52016d9088e796c313f6eb3c9c540e0
tree3e158ea4f6e52b9fb87153e6587f336e3860f933
parenta955d71df26c43337ca0ab8f9279d54715cd601f
net: hns3: process H/W errors occurred before HNS dev initialization

Presently the HNS driver enables the HNS H/W error interrupts after
the dev initialization is completed. However some exceptions such as
NCSI errors can occur when the network port driver is not loaded
and those errors required reporting to the BMC.
Therefore the firmware enabled all the HNS ras error interrupts
before the driver is loaded. And in some cases, there will be some
H/W errors remained unclear before reboot. Thus the HNS driver needs
to process and recover those hw errors occurred before HNS driver is
initialized.

This patch adds processing of the HNS hw errors(RAS and MSI-X)
which occurred before the driver initialization. For RAS, because
they are enabled by firmware, so we can detect specific bits, then
log and clear them. But for MSI-X which can not be enabled before
open vector0 irq, we can't detect the specific error bits, so we
just write 1 to all interrupt source registers to clear.

Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.c
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_err.h
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c