stmmac: new descriptor field for the driver's platform
authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>
Tue, 13 Apr 2010 20:21:14 +0000 (20:21 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 14 Apr 2010 11:49:51 +0000 (04:49 -0700)
commite326e8503dfc73e4f79d488a78ee3d7cde10081f
tree04f0c29dfd48edf2de175eec64b24c7164e88e86
parent688911c2f5e5e4f33b5a1c32839184f1fdf814ee
stmmac: new descriptor field for the driver's platform

The new enh_desc is used for selecting the enhanced descriptors
structure. There are several scenarios; some chips (mac10/100
or gmac) want to use the enhanced descriptors; others want the normal
ones.
For example, on ST platforms: MAC10/100 uses the normal desc structure
and the GMAC uses the enhanced one.
It can be useful to get this information from the platform.
This could also be decided at run-time looking at the chip's ID number;
but it could happen that chips with the same ID want to use different
descriptor structure.

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