nvme-pci: split the probe and reset handlers v2

[Chaitanya Kulkarni]

> 
> On Nov 13, 2022, at 8:11 AM, Christoph Hellwig <hch at lst.de> wrote:
> 
> Hi all,
> 
> this series split the nvme-pci probe handler to be separate from the reset
> handler.  I've been wanting to do that for a while, but the bug report from
> Gerd that was caused by confusing about the controller state in the reset
> state required it to be expedited.
> 
> Changes since v1:
> - switch back from IS_ENABLED for the SED_OPAL code to prevent a warning
>   when it is disabled.
> - rename nvme_pci_alloc_ctrl to nvme_pci_alloc_dev
> - allow initializating shadow doorbell buffers during reset
> - simplify HMB setup a bit
> - shutdown the controller on reset failure
> 
> Diffstat:
> host/apple.c  |    2 
> host/core.c   |   39 ++++-
> host/fc.c     |    2 
> host/nvme.h   |    7 
> host/pci.c    |  413 ++++++++++++++++++++++++++++------------------------------
> host/rdma.c   |    2 
> host/tcp.c    |    2 
> target/loop.c |    2 
> 8 files changed, 240 insertions(+), 229 deletions(-)

This looks good to me minus the apple and fc part...

Reviewed-by: Chaitanya Kulkarni <kch at nvidia.com>

-ck