net: ethernet: ti: cpdma: switch to use genalloc

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TI CPDMA currently uses a bitmap for tracking descriptors alloactions
allocations, but The genalloc already handles the same and can be used
as with special memory (SRAM) as with DMA cherent memory chank
(dma_alloc_coherent()). Hence, switch to using genalloc and add
desc_num property for each channel for limitation of max number of
allowed descriptors for each CPDMA channel. This patch do not affect
on net throuput.

Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Tested-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Grygorii Strashko 2016-06-27 12:05:11 +03:00 • committed by David S. Miller

parent c37d4a0085

commit 742fb20fd4

1 changed files with 59 additions and 72 deletions

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131

drivers/net/ethernet/ti/davinci_cpdma.c

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