Attempt to open /dev/qcom_rfsa1 and use this instead of memory mapping
/dev/mem, while falling back to the old behavior. This allow us to drop
the dependency on /dev/mem access and will aid supporting multiple
memory regions.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Rather than exposing a pointer to the mmapped memory and performing IO
directly on this address pass the data through a local buffer and move
the reading and writing of memory into the sharedmem module.
This allows us to support shared memory that is not memory mapped in the
future.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Introduce a struct to pass around the parameters related to the rmtfs
memory, in preparation for supporting multiple memory regions.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
We don't have a way to notice if the remote crashes and free the memory,
so for now don't mark it as busy and just hand out the same memory the
next time.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
The rmtfs address differes from platform to platform, so fetch these
from the device-tree node in /proc instead of hard coding them.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
The rmtfs tool pushlishes the two QMI services "rmtfs" and "rfsa", and
implements the necessary requests for rmtfs that's needed to boot the
modem subsystem on a Qualcomm based board.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
