commit 802a370292296641da007baeabc6db11708b46bf
author Ken Liu <Ken.Liu@arm.com> Fri Oct 15 12:09:56 2021 +0800
committer Ken Liu <ken.liu@arm.com> Thu Oct 28 03:56:47 2021 +0200
tree ff936771c9f9385b09e929d04264e8809b693aec
parent f3799a15327a9cf751fe7ad4dcb0ec9fc59f9c61

SPM: Add backend operation 'replying'

SFN and IPC have different message replying mechanisms:

- SFN replies to the client by SPM after messaging is performed;
  while IPC partition calls 'psa_reply' initiatively to reply to
  the client.

Abstract 'replying' to decouple the backend-specific operations
out of common FFM logic.

Change-Id: Ie28a0eaa1b37dfe458328dfb6ba298a0bf979c26
Signed-off-by: Ken Liu <Ken.Liu@arm.com>

secure_fw/spm/include/ffm/backend.h

diff --git a/secure_fw/spm/include/ffm/backend.h b/secure_fw/spm/include/ffm/backend.h
index 09fa256..7b7ea00 100644
--- a/secure_fw/spm/include/ffm/backend.h
+++ b/secure_fw/spm/include/ffm/backend.h
@@ -35,6 +35,11 @@
     psa_status_t (*messaging)(struct service_t *p_serv,
                               struct tfm_msg_body_t *p_msg);
 
+    /*
+     * Runtime model-specific message replying.
+     * Return the acked status.
+     */
+    void (*replying)(struct tfm_msg_body_t *p_msg, psa_status_t status);
 };
 
 /* RUNTIME MODEL BACKENDS DECLARATION */