IGB AVB support #1
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
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]>
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]>
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]>
Signed-off-by: Timo Wischer <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Required by renesas-rcar/avb-mse#1