Based on kernel version 5.8
. Page generated on 2020-08-08 17:40 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | 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 |