.. SPDX-License-Identifier: GPL-2.0

===================================== 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
#) raise MSI-X IRQ
#) read data
#) write data
#) copy data

This misc driver creates /dev/pci-endpoint-test.<num> 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 to be tested should be passed as argument. PCITEST_LEGACY_IRQ: Tests legacy IRQ PCITEST_MSI: Tests message signalled interrupts. The MSI number to be tested should be passed as argument. PCITEST_MSIX: Tests message signalled interrupts. The MSI-X number to be tested should be passed as argument. PCITEST_SET_IRQTYPE: Changes driver IRQ type configuration. The IRQ type should be passed as argument (0: Legacy, 1:MSI, 2:MSI-X). PCITEST_GET_IRQTYPE: Gets driver IRQ type configuration. 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.rst