feat(indirect message): add RX_ACQUIRE ABI
In FF-A v1.1 both Hypervisor and SPMC are producers of VM's RX buffer,
and they could contend for the same buffer.
SPMC owns VM's RX buffer after it's mapped in its translation regime.
This ABI should be used by the Hypervisor to get the ownership of a
VM's RX buffer.
This patch covers two uses cases: indirect messages (through v1.1
FFA_MSG_SEND2) and FFA_PARTITION_INFO_GET. Memory sharing interfaces
should make use of RX_ACQUIRE when they will be updated to FF-A v1.1.
Change-Id: Id33cbc7e500adf55316783a48e7acfcb52b9e305
Signed-off-by: Federico Recanati <federico.recanati@arm.com>
diff --git a/src/arch/aarch64/hypervisor/handler.c b/src/arch/aarch64/hypervisor/handler.c
index 13ab1eb..b30fb8d 100644
--- a/src/arch/aarch64/hypervisor/handler.c
+++ b/src/arch/aarch64/hypervisor/handler.c
@@ -507,6 +507,9 @@
case FFA_RXTX_UNMAP_32:
*args = api_ffa_rxtx_unmap(args->arg1, current);
return true;
+ case FFA_RX_ACQUIRE_32:
+ *args = api_ffa_rx_acquire(ffa_receiver(*args), current);
+ return true;
case FFA_YIELD_32:
*args = api_yield(current, next);
return true;