Driver for PCI Endpoint Test Function
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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: 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: Tests legacy IRQ
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PCITEST_MSI: 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: 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: 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: Gets driver IRQ type configuration.
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PCITEST_WRITE: Perform write tests. The size of the buffer should be passed
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as argument.
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PCITEST_READ: Perform read tests. The size of the buffer should be passed
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as argument.
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PCITEST_COPY: 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.txt
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