net/mlx5: FPGA, Add SBU bypass and reset flows

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The Innova FPGA includes shell hardware and Sandbox-Unit (SBU) hardware.
The shell hardware is handled by mlx5_core itself, while the SBU is
handled by a client driver.

Reset the SBU to a well-known initial state when initializing a new
device, and set the FPGA to bypass mode when uninitializing a device.
This allows the client driver to assume that its device has been
reset when a new device is detected.

During SBU reset, the FPGA is put into SBU-bypass mode. In this mode
packets do not pass through the SBU, so it cannot affect the network
data stream at all.

A factory-image does not have an SBU, so skip these flows.

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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This commit is contained in:

Ilan Tayari 2017-04-18 12:54:27 +03:00 • committed by Saeed Mahameed

parent 537a505741

commit c43051d72a

4 changed files with 61 additions and 0 deletions

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11

drivers/net/ethernet/mellanox/mlx5/core/fpga/cmd.c

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1

drivers/net/ethernet/mellanox/mlx5/core/fpga/cmd.h

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40

drivers/net/ethernet/mellanox/mlx5/core/fpga/core.c

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9

include/linux/mlx5/mlx5_ifc_fpga.h

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