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-rw-r--r--Documentation/ABI/testing/configfs-spear-pcie-gadget36
1 files changed, 19 insertions, 17 deletions
diff --git a/Documentation/ABI/testing/configfs-spear-pcie-gadget b/Documentation/ABI/testing/configfs-spear-pcie-gadget
index 840c324ef34d..cf877bd341df 100644
--- a/Documentation/ABI/testing/configfs-spear-pcie-gadget
+++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget
@@ -10,22 +10,24 @@ Description:
This interfaces can be used to show spear's PCIe device capability.
Nodes are only visible when configfs is mounted. To mount configfs
- in /config directory use:
- # mount -t configfs none /config/
+ in /config directory use::
- For nth PCIe Device Controller
- /config/pcie-gadget.n/
- link ... used to enable ltssm and read its status.
- int_type ...used to configure and read type of supported
- interrupt
- no_of_msi ... used to configure number of MSI vector needed and
+ # mount -t configfs none /config/
+
+ For nth PCIe Device Controller /config/pcie-gadget.n/:
+
+ =============== ======================================================
+ link used to enable ltssm and read its status.
+ int_type used to configure and read type of supported interrupt
+ no_of_msi used to configure number of MSI vector needed and
to read no of MSI granted.
- inta ... write 1 to assert INTA and 0 to de-assert.
- send_msi ... write MSI vector to be sent.
- vendor_id ... used to write and read vendor id (hex)
- device_id ... used to write and read device id (hex)
- bar0_size ... used to write and read bar0_size
- bar0_address ... used to write and read bar0 mapped area in hex.
- bar0_rw_offset ... used to write and read offset of bar0 where
- bar0_data will be written or read.
- bar0_data ... used to write and read data at bar0_rw_offset.
+ inta write 1 to assert INTA and 0 to de-assert.
+ send_msi write MSI vector to be sent.
+ vendor_id used to write and read vendor id (hex)
+ device_id used to write and read device id (hex)
+ bar0_size used to write and read bar0_size
+ bar0_address used to write and read bar0 mapped area in hex.
+ bar0_rw_offset used to write and read offset of bar0 where bar0_data
+ will be written or read.
+ bar0_data used to write and read data at bar0_rw_offset.
+ =============== ======================================================