The switchtec_ntb driver has a couple requirements on the switchec's hardware configuration so we add these notes to the documentation. Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> Reviewed-by: Stephen Bates <sbates@xxxxxxxxxxxx> Reviewed-by: Kurt Schwemmer <kurt.schwemmer@xxxxxxxxxxxxx> --- Documentation/switchtec.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/switchtec.txt b/Documentation/switchtec.txt index a0a9c7b3d4d5..978a346e1fb3 100644 --- a/Documentation/switchtec.txt +++ b/Documentation/switchtec.txt @@ -78,3 +78,15 @@ The following IOCTLs are also supported by the device: between PCI Function Framework number (used by the event system) and Switchtec Logic Port ID and Partition number (which is more user friendly). + + +Non-Transparent Bridge (NTB) Driver +=================================== + +An NTB driver is provided for the switchtec hardware in switchec_ntb. +Currently, it only supports switches configured with exactly 2 +partitions. It also requires the following configuration settings: + +* Both partitions must be able to access each other's GAS spaces. + Thus, the bits in the GAS Access Vector under Management Settings + must be set to support this. -- 2.11.0
