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:

  1. verifying addresses programmed in BAR
  2. raise legacy IRQ
  3. raise MSI IRQ
  4. raise MSI-X IRQ
  5. read data
  6. write data
  7. 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]PCI Test Endpoint Function