From mboxrd@z Thu Jan 1 00:00:00 1970 From: kishon@ti.com (Kishon Vijay Abraham I) Date: Mon, 27 Mar 2017 15:15:15 +0530 Subject: [PATCH v5 19/24] Documentation: misc-devices: Add Documentation for pci-endpoint-test driver In-Reply-To: <20170327094520.3129-1-kishon@ti.com> References: <20170327094520.3129-1-kishon@ti.com> Message-ID: <20170327094520.3129-20-kishon@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add Documentation for pci-endpoint-test driver. Signed-off-by: Kishon Vijay Abraham I --- Documentation/misc-devices/pci-endpoint-test.txt | 35 ++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/misc-devices/pci-endpoint-test.txt diff --git a/Documentation/misc-devices/pci-endpoint-test.txt b/Documentation/misc-devices/pci-endpoint-test.txt new file mode 100644 index 000000000000..438571898d27 --- /dev/null +++ b/Documentation/misc-devices/pci-endpoint-test.txt @@ -0,0 +1,35 @@ +Driver for PCI Endpoint Test Function + +This driver should be used as a host side driver if the root complex is +connected to a configurable pci endpoint running *pci_epf_test* function +driver configured according to [1]. + +The "pci_endpoint_test" driver can be used to perform the following tests. + +The PCI driver for the test device performs the following tests + *) verifying addresses programmed in BAR + *) raise legacy IRQ + *) raise MSI IRQ + *) read data + *) write data + *) copy data + +This misc driver creates /dev/pci-endpoint-test. for every +*pci_epf_test* function connected to the root complex and "ioctls" +should be used to perform the above tests. + +ioctl +----- + PCITEST_BAR: Tests the BAR. The number of the BAR that has to be tested + should be passed as argument. + PCITEST_LEGACY_IRQ: Tests legacy IRQ + PCITEST_MSI: Tests message signalled interrupts. The MSI number that has + to be tested should be passed as argument. + PCITEST_WRITE: Perform write tests. The size of the buffer should be passed + as argument. + PCITEST_READ: Perform read tests. The size of the buffer should be passed + as argument. + PCITEST_COPY: Perform read tests. The size of the buffer should be passed + as argument. + +[1] -> Documentation/PCI/endpoint/function/binding/pci-test.txt -- 2.11.0