1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2020 Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
4 */
5
6 #include <dm.h>
7 #include <dm/device.h>
8 #include <dm/ofnode.h>
9 #include <dm/root.h>
10 #include <dm/test.h>
11 #include <dm/uclass-internal.h>
12 #include <test/ut.h>
13
dm_test_dma_ranges(struct unit_test_state * uts)14 static int dm_test_dma_ranges(struct unit_test_state *uts)
15 {
16 struct udevice *dev;
17 phys_addr_t cpu;
18 dma_addr_t bus;
19 ofnode node;
20 u64 size;
21
22 /* dma-ranges are on the device's node */
23 node = ofnode_path("/mmio-bus@0");
24 ut_assert(ofnode_valid(node));
25 ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
26 ut_assertok(dev_get_dma_range(dev, &cpu, &bus, &size));
27 ut_asserteq_64(0x40000, size);
28 ut_asserteq_64(0x0, cpu);
29 ut_asserteq_64(0x10000000, bus);
30
31 /* dma-ranges are on the bus' node */
32 node = ofnode_path("/mmio-bus@0/subnode@0");
33 ut_assert(ofnode_valid(node));
34 ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
35 ut_assertok(dev_get_dma_range(dev, &cpu, &bus, &size));
36 ut_asserteq_64(0x40000, size);
37 ut_asserteq_64(0x0, cpu);
38 ut_asserteq_64(0x10000000, bus);
39
40 /* No dma-ranges available */
41 node = ofnode_path("/mmio-bus@1");
42 ut_assert(ofnode_valid(node));
43 ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
44 ut_asserteq(-ENOENT, dev_get_dma_range(dev, &cpu, &bus, &size));
45
46 return 0;
47 }
48 DM_TEST(dm_test_dma_ranges, UTF_SCAN_PDATA | UTF_SCAN_FDT);
49