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| author | Florian Fainelli <florian@openwrt.org> | 2013-06-12 20:53:05 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-13 17:22:08 -0700 |
| commit | 3dc6475c0c9e55ac7f053ad6b8b398e779954545 (patch) | |
| tree | b0dfa7d618905408e6ed1fe369e263c9fc02170c /net/core | |
| parent | ca4ec90b31d1ecf01087c607933cf792057bc8bf (diff) | |
| download | linux-3dc6475c0c9e55ac7f053ad6b8b398e779954545.tar.bz2 | |
bcm63xx_enet: add support Broadcom BCM6345 Ethernet
This patch adds support for the Broadcom BCM6345 SoC Ethernet. BCM6345
has a slightly different and older DMA engine which requires the
following modifications:
- the width of the DMA channels on BCM6345 is 64 bytes vs 16 bytes,
which means that the helpers enet_dma{c,s} need to account for this
channel width and we can no longer use macros
- BCM6345 DMA engine does not have any internal SRAM for transfering
buffers
- BCM6345 buffer allocation and flow control is not per-channel but
global (done in RSET_ENETDMA)
- the DMA engine bits are right-shifted by 3 compared to other DMA
generations
- the DMA enable/interrupt masks are a little different (we need to
enabled more bits for 6345)
- some register have the same meaning but are offsetted in the ENET_DMAC
space so a lookup table is required to return the proper offset
The MAC itself is identical and requires no modifications to work.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
0 files changed, 0 insertions, 0 deletions