Joakim Tjernlund wrote: > > In my typical example I need to invalidate a buffer before I give it to > the > CPM to be used as a receive buffer. Once given to the CPM there must be > no more writes to that buffer memory. When the CPM has received data > and written the data into the buffer and hands it over to the CPU > (usally via an interrupt) the next read from the CPU must access it from > the memory. Does the above require a sync?
Probably not, I don't know much about the CPM though (and I assume this is a system without any extra cpu's). > Does it take some time before a invalidate is completed? Depends on your cpu; I don't know the details for your cpu. Check your manuals :) Segher ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
