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[oweals/u-boot.git] / test / dm / mailbox.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2016, NVIDIA CORPORATION.
4  */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <dm/test.h>
9 #include <asm/mbox.h>
10 #include <test/ut.h>
11
12 static int dm_test_mailbox(struct unit_test_state *uts)
13 {
14         struct udevice *dev;
15         uint32_t msg;
16
17         ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "mbox-test", &dev));
18         ut_assertok(sandbox_mbox_test_get(dev));
19
20         ut_asserteq(-ETIMEDOUT, sandbox_mbox_test_recv(dev, &msg));
21         ut_assertok(sandbox_mbox_test_send(dev, 0xaaff9955UL));
22         ut_assertok(sandbox_mbox_test_recv(dev, &msg));
23         ut_asserteq(msg, 0xaaff9955UL ^ SANDBOX_MBOX_PING_XOR);
24         ut_asserteq(-ETIMEDOUT, sandbox_mbox_test_recv(dev, &msg));
25
26         ut_assertok(sandbox_mbox_test_free(dev));
27
28         return 0;
29 }
30 DM_TEST(dm_test_mailbox, DM_TESTF_SCAN_FDT);