[PATCH v21 8/9] selftests: pci_endpoint: Add doorbell test case

[Frank Li via B4 Relay <devnull+Frank.Li.nxp.com@kernel.org>]

From: Frank Li <Frank.Li@nxp.com>

Add doorbell test case.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
change in v20
- update document

change from v14 to v16
- Add set IRQ type

change from v13 to v14
- merge to selftests framework
---
 Documentation/PCI/endpoint/pci-test-howto.rst      | 14 +++++++++++
 .../selftests/pci_endpoint/pci_endpoint_test.c     | 28 ++++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/Documentation/PCI/endpoint/pci-test-howto.rst b/Documentation/PCI/endpoint/pci-test-howto.rst
index aafc17ef3fd31f6ada38c82c8df133b87f7a1ae1..0cee35dcb29cc938823de53ef6e1a1cd81d49d52 100644
--- a/Documentation/PCI/endpoint/pci-test-howto.rst
+++ b/Documentation/PCI/endpoint/pci-test-howto.rst
@@ -203,3 +203,17 @@ controllers, it is advisable to skip this testcase using this
 command::
 
 	# pci_endpoint_test -f pci_ep_bar -f pci_ep_basic -v memcpy -T COPY_TEST -v dma
+
+Kselftest EP Doorbell
+~~~~~~~~~~~~~~~~~~~~~
+
+If EP side have MSI controller, run below command to test doorbell function.
+
+	# pci_endpoint_test -f pcie_ep_doorbell
+
+	# Starting 1 tests from 1 test cases.
+	#  RUN           pcie_ep_doorbell.DOORBELL_TEST ...
+	#            OK  pcie_ep_doorbell.DOORBELL_TEST
+	ok 1 pcie_ep_doorbell.DOORBELL_TEST
+	# PASSED: 1 / 1 tests passed.
+	# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
diff --git a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
index ac26481d29d9dce5d07de563048850c55c58c22d..da0db0e7c9693f11b4975ca0e6830174229983ba 100644
--- a/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
+++ b/tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
@@ -229,4 +229,32 @@ TEST_F(pci_ep_data_transfer, COPY_TEST)
 					 test_size[i]);
 	}
 }
+
+FIXTURE(pcie_ep_doorbell)
+{
+	int fd;
+};
+
+FIXTURE_SETUP(pcie_ep_doorbell)
+{
+	self->fd = open(test_device, O_RDWR);
+
+	ASSERT_NE(-1, self->fd) TH_LOG("Can't open PCI Endpoint Test device");
+};
+
+FIXTURE_TEARDOWN(pcie_ep_doorbell)
+{
+	close(self->fd);
+};
+
+TEST_F(pcie_ep_doorbell, DOORBELL_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_DOORBELL, 0);
+	EXPECT_FALSE(ret) TH_LOG("Test failed for Doorbell\n");
+}
 TEST_HARNESS_MAIN

-- 
2.34.1