Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
Add Documentation for pci-endpoint-test driver. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>zero-colors
parent
2c156ac71c
commit
0cfb512e4a
|
@ -0,0 +1,35 @@
|
||||||
|
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
|
||||||
|
*) 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_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
|
Loading…
Reference in New Issue