Changeset bc117a5 in mainline for kernel/generic/src/ipc/sysipc.c

Timestamp:

2016-08-29T12:43:10Z (8 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c32b6f0

Parents:

6d351e6

Message:

Partially revert jakub@…

This changeset reintroduces portions of the synchronous IPC mechanism for
internal use by the kernel / user_backend. The synchronous IPC is not
exported to user space and is simpler than in its original form.

File:

• kernel/generic/src/ipc/sysipc.c (modified) (1 diff)

kernel/generic/src/ipc/sysipc.c

@@ -257 +257 @@
 {
         return SYSIPC_OP(request_process, call, box);
+}
+
+/** Make a call over IPC and wait for reply.
+ *
+ * @param phoneid     Phone handle for the call.
+ * @param data[inout] Structure with request/reply data.
+ *
+ * @return EOK on success.
+ * @return ENOENT if there is no such phone handle.
+ *
+ */
+int ipc_req_internal(int phoneid, ipc_data_t *data)
+{
+        phone_t *phone;
+        if (phone_get(phoneid, &phone) != EOK)
+                return ENOENT;
+        
+        call_t *call = ipc_call_alloc(0);
+        memcpy(call->data.args, data->args, sizeof(data->args));
+        
+        int rc = request_preprocess(call, phone);
+        if (!rc) {
+#ifdef CONFIG_UDEBUG
+                udebug_stoppable_begin();
+#endif
+
+                rc = ipc_call_sync(phone, call); 
+
+#ifdef CONFIG_UDEBUG
+                udebug_stoppable_end();
+#endif
+
+                if (rc != EOK)
+                        return EINTR;
+
+                process_answer(call);
+        } else
+                IPC_SET_RETVAL(call->data, rc);
+        
+        memcpy(data->args, call->data.args, sizeof(data->args));
+        ipc_call_free(call);
+        
+        return EOK;
 }