Merge branch 'hns3-add-code-optimization-for-VF-reset-and-some-new-reset-feature'

Huazhong Tan says:

====================
hns3: add code optimization for VF reset and some new reset feature

Currently hardware supports below reset:
1. VF reset: triggered by sending cmd to IMP(Integrated Management
   Processor). Only reset specific VF function and do not affect
   other PF or VF.
2. PF reset: triggered by sending cmd to IMP. Only reset specific PF
   and it's VF.
3. PF FLR: triggered by PCIe subsystem. Only reset specific PF and
   it's VF.
4. VF FLR: triggered by PCIe subsystem. Only reset specific VF function
   and do not affect other PF or VF.
5. Core reset: triggered by writing to register. Reset most hardware
   unit, such as SSU, which affects all the PF and VF.
6. Global reset: triggered by writing to register. Reset all hardware
   unit, which affects all the PF and VF.
7. IMP reset: triggered by IMU(Intelligent Management Unit) when
   IMP is not longer feeding IMU's watchdog. IMU will reload the IMP
   firmware and IMP will perform global reset after firmware reloading,
   which affects all the PF and VF.

Current driver only support PF/VF reset, incomplete core and global
reset(lacking the vf reset handling). So this patchset adds complete
reset support in hns3 driver.

Also, this patchset contains some optimization related to reset.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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