net: sparx5: use contiguous memory for tx buffers

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Currently, the driver uses a linked list for storing the tx buffer
addresses. This requires a good amount of extra bookkeeping code. Ditch
the linked list in favor of tx buffers being in the same contiguous
memory space as the DCB's and the DB's. The FDMA library has a helper
for this - so use that.

The tx buffer addresses are now retrieved as an offset into the FDMA
memory space.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Reviewed-by: Jens Emil Schulz Østergaard <jensemil.schulzostergaard@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Daniel Machon 2024-09-02 16:54:16 +02:00 • committed by David S. Miller

parent bb7a60dab4

commit 55e84c3cfd

2 changed files with 13 additions and 45 deletions

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57

drivers/net/ethernet/microchip/sparx5/sparx5_fdma.c

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1

drivers/net/ethernet/microchip/sparx5/sparx5_main.h

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