@@ -604,6 +604,26 @@ static int ffa_notification_bind_common(u16 dst_id, u64 bitmap,
return 0;
}
+static
+int ffa_notification_set(u16 src_id, u16 dst_id, u32 flags, u64 bitmap)
+{
+ ffa_value_t ret;
+ u32 src_dst_ids = PACK_TARGET_INFO(src_id, dst_id);
+
+ invoke_ffa_fn((ffa_value_t) {
+ .a0 = FFA_NOTIFICATION_SET, .a1 = src_dst_ids, .a2 = flags,
+ .a3 = NOTIFICATION_BITMAP_LOW(bitmap),
+ .a4 = NOTIFICATION_BITMAP_HIGH(bitmap),
+ }, &ret);
+
+ if (ret.a0 == FFA_ERROR)
+ return ffa_to_linux_errno((int)ret.a2);
+ else if (ret.a0 != FFA_SUCCESS)
+ return -EINVAL;
+
+ return 0;
+}
+
static int ffa_run(struct ffa_device *dev, u16 vcpu)
{
ffa_value_t ret;
The framework provides an interface to the sender to specify the notification to signal to the receiver. A sender signals a notification by requesting its partition manager to set the corresponding bit in the notifications bitmap of the receiver invoking FFA_NOTIFICATION_SET. Implement the FFA_NOTIFICATION_SET to enable the caller(sender) to send the notifications for any other partitions in the system. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> --- drivers/firmware/arm_ffa/driver.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)