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SubjectRe: [PATCH v2 1/4] MicroSemi Switchtec management interface driver
On Thu, Feb 02, 2017 at 11:06:00AM -0700, Logan Gunthorpe wrote:
> Microsemi's "Switchtec" line of PCI switch devices is already well
> supported by the kernel with standard PCI switch drivers. However, the
> Switchtec device advertises a special management endpoint with a separate
> PCI function address and class code. This endpoint enables some additional
> functionality which includes:
>
> * Packet and Byte Counters
> * Switch Firmware Upgrades
> * Event and Error logs
> * Querying port link status
> * Custom user firmware commands
>
> This patch introduces the switchtec kernel module which provides
> PCI driver that exposes a char device. The char device provides
> userspace access to this interface through read, write and (optionally)
> poll calls.
>
> A userspace tool and library which utilizes this interface is available
> at [1]. This tool takes inspiration (and borrows some code) from
> nvme-cli [2]. The tool is largely complete at this time but additional
> features may be added in the future.
>
> [1] https://github.com/sbates130272/switchtec-user
> [2] https://github.com/linux-nvme/nvme-cli
>
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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