stmmac: export DMA TX/RX rings via debugfs (v3)

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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>

...

This commit is contained in:

Giuseppe CAVALLARO 2011-09-01 21:51:39 +00:00 • committed by David S. Miller

parent 1c901a46d5

commit 7ac2905511

2 changed files with 112 additions and 0 deletions

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7

drivers/net/ethernet/stmicro/stmmac/Kconfig

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105

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

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