.. SPDX-License-Identifier: GPL-2.0
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=====================================
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Driver for PCI Endpoint Test Function
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=====================================
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This driver should be used as a host side driver if the root complex is
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connected to a configurable PCI endpoint running ``pci_epf_test`` function
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driver configured according to [1]_.
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The "pci_endpoint_test" driver can be used to perform the following tests.
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The PCI driver for the test device performs the following tests:
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#) verifying addresses programmed in BAR
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#) raise legacy IRQ
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#) raise MSI IRQ
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#) raise MSI-X IRQ
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#) read data
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#) write data
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#) copy data
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This misc driver creates /dev/pci-endpoint-test.<num> for every
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``pci_epf_test`` function connected to the root complex and "ioctls"
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should be used to perform the above tests.
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ioctl
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-----
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PCITEST_BAR:
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Tests the BAR. The number of the BAR to be tested
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should be passed as argument.
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PCITEST_LEGACY_IRQ:
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Tests legacy IRQ
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PCITEST_MSI:
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Tests message signalled interrupts. The MSI number
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to be tested should be passed as argument.
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PCITEST_MSIX:
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Tests message signalled interrupts. The MSI-X number
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to be tested should be passed as argument.
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PCITEST_SET_IRQTYPE:
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Changes driver IRQ type configuration. The IRQ type
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should be passed as argument (0: Legacy, 1:MSI, 2:MSI-X).
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PCITEST_GET_IRQTYPE:
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Gets driver IRQ type configuration.
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PCITEST_WRITE:
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Perform write tests. The size of the buffer should be passed
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as argument.
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PCITEST_READ:
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Perform read tests. The size of the buffer should be passed
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as argument.
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PCITEST_COPY:
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Perform read tests. The size of the buffer should be passed
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as argument.
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.. [1] Documentation/PCI/endpoint/function/binding/pci-test.rst
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