feat(fvp): add plat hook for memory transactions
Add call to platform hooks upon successful transmission of a
memory transaction request and as part of a memory reclaim request.
This allows for platform specific functionality to be performed
accordingly.
Note the hooks must be placed in the initial share request and final
reclaim to prevent order dependencies with operations that may take
place in the normal world without visibility of the SPMC.
Add a dummy implementation to the FVP platform.
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I0c7441a9fdf953c4db0651512e5e2cdbc6656c79
diff --git a/services/std_svc/spm/el3_spmc/spmc_shared_mem.c b/services/std_svc/spm/el3_spmc/spmc_shared_mem.c
index 7b9a526..1602981 100644
--- a/services/std_svc/spm/el3_spmc/spmc_shared_mem.c
+++ b/services/std_svc/spm/el3_spmc/spmc_shared_mem.c
@@ -1031,6 +1031,12 @@
}
}
+ /* Allow for platform specific operations to be performed. */
+ ret = plat_spmc_shmem_begin(&obj->desc);
+ if (ret != 0) {
+ goto err_arg;
+ }
+
SMC_RET8(smc_handle, FFA_SUCCESS_SMC32, 0, handle_low, handle_high, 0,
0, 0, 0);
@@ -1788,6 +1794,13 @@
ret = FFA_ERROR_DENIED;
goto err_unlock;
}
+
+ /* Allow for platform specific operations to be performed. */
+ ret = plat_spmc_shmem_reclaim(&obj->desc);
+ if (ret != 0) {
+ goto err_unlock;
+ }
+
spmc_shmem_obj_free(&spmc_shmem_obj_state, obj);
spin_unlock(&spmc_shmem_obj_state.lock);