The rpmsg_mi_configure_shm() function is not returning anything and it
is not marked as static. Fix this changing the return type to 'static
void'.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
When possible use 'size_t' for sizes and 'uintptr_t' for generic
addresses instead of relying on uint*_t types.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This patch is the first step to make the rpmsg_multi_instance usable in
a multi-core scenario.
The current driver is using a local driver variable (instance) to track
the number of allocated instances. This counter is practically used to
allocate to the instance the correct portion of the shared memory.
This is fundamentally wrong because this is assuming that it does exist
only one single shared memory region to split amongs all the allocated
instances. When the platform has more than one core this is obviously
not the case since each couple of cores are communicating using a
different memory region.
To solve this issue we introduce a new struct rpmsg_mi_ctx_shm_cfg that
is doing two things: (1) it's carrying the information about the shared
memory and (2) it's carrying an internal variable used to track the
instances allocated in that region. The same struct should be used every
time a new instance is allocated in the same shared memory region.
We also fix a problem with the current code where there is a race
between threads when accessing the instance variable, so this patch is
adding a serializing mutex.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
For the instance configuration the rpmsg_multi_instance code is
currently using a set of configuration info coming from two different
sources: the rpsmg_mi_ctx_cfg struct and Kconfig.
This is not only confusing but it's preventing to configure the
instances using information not coming from Kconfig (for example if we
want to configure the instance using DT).
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
The IPC drivers rpmsg_service and rpmsg_multi_instance are not
explicitly enabling the RX IPM channel when two different devices are
used for TX and RX. While this could be redundant for some IPM drivers,
in some cases the hardware needs to be enabled before using it.
Add the missing calls to ipm_set_enabled() for both the devices.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This patch implements a service that adds multiple instances
capabilities to RPMsg.
Each instance is allocated a separate piece of shared memory.
Multiple instances provide independent message processing.
Each instance has its own work_q.
Signed-off-by: Marcin Jeliński <marcin.jelinski@nordicsemi.no>
