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| author | Logan Gunthorpe <logang@deltatee.com> | 2017-08-03 21:19:54 +0300 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2017-11-19 04:37:13 +0300 |
| commit | d0450244a4920187eebf844a1610744059b59ee6 (patch) | |
| tree | 03166de101e524f036eaff3ac46bd6cd0bbb8953 | |
| parent | 87d11e645e31d66be751211946e8d1e3eb624066 (diff) | |
| download | linux-d0450244a4920187eebf844a1610744059b59ee6.tar.xz | |
NTB: switchtec_ntb: Update switchtec documentation with notes for NTB
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@deltatee.com>
Reviewed-by: Stephen Bates <sbates@raithlin.com>
Reviewed-by: Kurt Schwemmer <kurt.schwemmer@microsemi.com>
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
| -rw-r--r-- | Documentation/switchtec.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/switchtec.txt b/Documentation/switchtec.txt index a0a9c7b3d4d5..f788264921ff 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 switchtec_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. |