[PATCH v3 4/8] of: unittest: Add test for of_dma_get_max_cpu_address()

Nicolas Saenz Julienne
2020-10-14T19:12:26Z

Introduce a test for of_dma_get_max_cup_address(), it uses the same DT
data as the rest of dma-ranges unit tests.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
drivers/of/unittest.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 06cc988faf78..2cbf2a585c9f 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -869,6 +869,25 @@ static void __init of_unittest_changeset(void)
#endif
}

+static void __init of_unittest_dma_get_max_cpu_address(void)
+{
+#ifdef CONFIG_HAS_DMA
+ struct device_node *np;
+ phys_addr_t cpu_addr;
+
+ np = of_find_node_by_path("/testcase-data/address-tests");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ cpu_addr = of_dma_get_max_cpu_address(np);
+ unittest(cpu_addr == 0x50000000ULL,
+ "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %llx)\n",
+ &cpu_addr, 0x50000000ULL);
+#endif
+}
+
static void __init of_unittest_dma_ranges_one(const char *path,
u64 expect_dma_addr, u64 expect_paddr)
{
@@ -3266,6 +3285,7 @@ static int __init of_unittest(void)
of_unittest_changeset();
of_unittest_parse_interrupts();
of_unittest_parse_interrupts_extended();
+ of_unittest_dma_get_max_cpu_address();
of_unittest_parse_dma_ranges();
of_unittest_pci_dma_ranges();
of_unittest_match_node();
--
2.28.0