[PATCH v10 8/8] selftests: pci_endpoint: Add BAR subrange mapping test case

Koichiro Den
2026-01-24T14:51:28Z

Add BAR_SUBRANGE_TEST to the pci_endpoint kselftest suite.

The test uses the PCITEST_BAR_SUBRANGE ioctl and will skip when the
chosen BAR is disabled (-ENODATA), when the endpoint/controller does not
support subrange mapping (-EOPNOTSUPP), or when the BAR is reserved for
the test register space (-EBUSY).

Signed-off-by: Koichiro Den <den@valinux.co.jp>
---
.../selftests/pci_endpoint/pci_endpoint_test.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
index 23aac6f97061..eecb776c33af 100644
--- a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
+++ b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
@@ -70,6 +70,23 @@ TEST_F(pci_ep_bar, BAR_TEST)
EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno);
}

+TEST_F(pci_ep_bar, BAR_SUBRANGE_TEST)
+{
+ int ret;
+
+ pci_ep_ioctl(PCITEST_SET_IRQTYPE, PCITEST_IRQ_TYPE_AUTO);
+ ASSERT_EQ(0, ret) TH_LOG("Can't set AUTO IRQ type");
+
+ pci_ep_ioctl(PCITEST_BAR_SUBRANGE, variant->barno);
+ if (ret == -ENODATA)
+ SKIP(return, "BAR is disabled");
+ if (ret == -EBUSY)
+ SKIP(return, "BAR is test register space");
+ if (ret == -EOPNOTSUPP)
+ SKIP(return, "Subrange map is not supported");
+ EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno);
+}
+
FIXTURE(pci_ep_basic)
{
int fd;
--
2.51.0