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authorSubbaraya Sundeep <sbhatta@marvell.com>2021-02-11 21:28:29 +0530
committerDavid S. Miller <davem@davemloft.net>2021-02-11 14:55:03 -0800
commit242da439214be9e61b75376d90e71c5c61744c92 (patch)
tree36156e666221047d1f4d8520166dedad1d9e374d /MAINTAINERS
parent91c6945ea1f9059fea886630d0fd8070740e2aaf (diff)
octeontx2-af: cn10k: Add support for programmable channels
NIX uses unique channel numbers to identify the packet sources/sinks like CGX,LBK and SDP. The channel numbers assigned to each block are hardwired in CN9xxx silicon. The fixed channel numbers in CN9xxx are: 0x0 | a << 8 | b - LBK(0..3)_CH(0..63) 0x0 | a << 8 - Reserved 0x700 | a - SDP_CH(0..255) 0x800 | a << 8 | b << 4 | c - CGX(0..7)_LMAC(0..3)_CH(0..15) All the channels in the above fixed enumerator(with maximum number of blocks) are not required since some chips have less number of blocks. For CN10K silicon the channel numbers need to be programmed by software in each block with the base channel number and range of channels. This patch calculates and assigns the channel numbers to efficiently distribute the channel number range(0-4095) among all the blocks. The assignment is made based on the actual number of blocks present and also contiguously leaving no holes. The channel numbers remaining after the math are used as new CPT replay channels present in CN10K. Also since channel numbers are not fixed the transmit channel link number needed by AF consumers is calculated by AF and sent along with nix_lf_alloc mailbox response. Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Geetha sowjanya <gakula@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'MAINTAINERS')
-rw-r--r--MAINTAINERS1
1 files changed, 1 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index ab8939e72ed8..3914691fb4a6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10720,6 +10720,7 @@ M: Linu Cherian <lcherian@marvell.com>
M: Geetha sowjanya <gakula@marvell.com>
M: Jerin Jacob <jerinj@marvell.com>
M: hariprasad <hkelam@marvell.com>
+M: Subbaraya Sundeep <sbhatta@marvell.com>
L: netdev@vger.kernel.org
S: Supported
F: Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst