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stmmac: export DMA TX/RX rings via debugfs (v3)
authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>
Thu, 1 Sep 2011 21:51:39 +0000 (21:51 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 15 Sep 2011 19:40:01 +0000 (15:40 -0400)
This patch adds the following debugFs entry to dump the
RX/TX DMA rings:

/sys/kernel/debug/stmmaceth/descriptors_status

This is an example:

=======================
  RX descriptor ring
=======================
[0] DES0=0x85ee0320 DES1=0x1fff1fff BUF1=0x5fae2022 BUF2=0x0
[1] DES0=0x85ee0320 DES1=0x1fff1fff BUF1=0x5fae0022 BUF2=0x0
[2] DES0=0x81460320 DES1=0x1fff1fff BUF1=0x5f9dd022 BUF2=0x0

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

No differences found
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