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authorKishon Vijay Abraham I <kishon@ti.com>2017-03-27 12:45:15 +0300
committerBjorn Helgaas <bhelgaas@google.com>2017-04-28 18:23:19 +0300
commit0cfb512e4acc7049d36478221f55bf6053bd81a6 (patch)
tree8846dc79a32ed71030f91cd90d5dda0e741665c6 /Documentation/misc-devices
parent2c156ac71c6b2518f3d589190f2a8872a8764faf (diff)
downloadlinux-0cfb512e4acc7049d36478221f55bf6053bd81a6.tar.xz
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>
Diffstat (limited to 'Documentation/misc-devices')
-rw-r--r--Documentation/misc-devices/pci-endpoint-test.txt35
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/misc-devices/pci-endpoint-test.txt b/Documentation/misc-devices/pci-endpoint-test.txt
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+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