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>
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@ -78,3 +78,15 @@ The following IOCTLs are also supported by the device:
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between PCI Function Framework number (used by the event system)
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and Switchtec Logic Port ID and Partition number (which is more
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user friendly).
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Non-Transparent Bridge (NTB) Driver
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===================================
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An NTB driver is provided for the switchtec hardware in switchtec_ntb.
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Currently, it only supports switches configured with exactly 2
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partitions. It also requires the following configuration settings:
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* Both partitions must be able to access each other's GAS spaces.
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Thus, the bits in the GAS Access Vector under Management Settings
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must be set to support this.
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