amd-xgbe: Adjust register settings to improve performance

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Add support to change some general performance settings and to provide
some performance settings based on the device that is probed.

This includes:

- Setting the maximum read/write outstanding request limit
- Reducing the AXI interface burst length size
- Selectively setting the Tx and Rx descriptor pre-fetch threshold
- Selectively setting additional cache coherency controls

Tested and verified on all versions of the hardware.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Lendacky, Thomas 2017-06-28 13:43:26 -05:00 • committed by David S. Miller

parent 7e1e6b86a5

commit 6f595959c0

5 changed files with 58 additions and 6 deletions

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13

drivers/net/ethernet/amd/xgbe/xgbe-common.h

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26

drivers/net/ethernet/amd/xgbe/xgbe-dev.c

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5

drivers/net/ethernet/amd/xgbe/xgbe-main.c

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9

drivers/net/ethernet/amd/xgbe/xgbe-pci.c

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11

drivers/net/ethernet/amd/xgbe/xgbe.h

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