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IGB AVB support #1

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IGB AVB support #1

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Commits on May 27, 2020

  1. igb: add some AVB specific register definitions 

    These will be needed for external AVB streaming driver and upcoming
AVB extension of igb driver on i210 card model.
Registers are documented in i210 controller datasheet available
at intel.com

Signed-off-by: Andreas Pape <[email protected]>
Signed-off-by: Timo Wischer <[email protected]>
    @aditpape
    aditpape authored and Timo Wischer committed May 27, 2020
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  2. igb: add basic AVB support 

    This patch adds config option CONFIG_IGB_EXT_AVB which enables
AVB support in igb driver. If enabled and driver is probed on an
igb card supporting AVB (currently only i210 model) the NIC is
configured for AVB use case (in parallel to normal traffic):
-2 TX queues and 2 RX queues are reserved for AVB usage
-these queues are 'hidden' to the linux networking stack to avoid
	usage for any 'normal' network traffic
-these queues are configured to support traffic shaping (QAV)

The queues are only allocated and initialized by igb driver but
need to be driven (sending/receiving) by external component.
Igb driver allows registering external IRQ handlers on these queues
and a notification callback for link status.
Shutting down the interface will also stop/shutdown AVB queues.

Signed-off-by: Andreas Pape <[email protected]>
Signed-off-by: Timo Wischer <[email protected]>
    @aditpape
    aditpape authored and Timo Wischer committed May 27, 2020
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  3. igb: streaming driver for MSE 

    This patch adds a streaming driver to use the MSE (Media Streaming Engine)
provided by Renesas for RCAR3 also on intel NIC.
The driver itself is derived from the Renesas ravb_streaming driver
(version R-Car v2.7.0).
For now it hooks at the ravb streaming API as there is no full separation
between the common parts (prefix 'eavb') and the NIC dependent
(RCAR3 specific) part (prefix 'ravb').
This results in obvious 'ravb' parts also used by the igb solution
which is acceptable.
Feature set is similar to the ravb driver:
-16 tx instances, 16 rx instances
The driver comes as a separate module and attaches to the igb driver
via the optional AVB API exported with config option CONFIG_IGB_EXT_AVB.
After attaching the streaming driver directly acts on the igb
hardware queues.

Signed-off-by: Andreas Pape <[email protected]>
Signed-off-by: Timo Wischer <[email protected]>
    @aditpape
    aditpape authored and Timo Wischer committed May 27, 2020
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  4. x86: Add defconfig to enable IGB AVB 

    Signed-off-by: Timo Wischer <[email protected]>
    Timo Wischer committed May 27, 2020
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