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.. 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.txt
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