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     siba — Sonic Inc. Silicon Backplane driver


     To compile this driver into the kernel, place the following lines in your kernel
     configuration file:

           device siba

     Alternatively, to load the driver as a module at boot time, place the following line in



     The siba driver supports the Sonic Inc. Silicon Backplane, the interblock communications
     architecture that can be found in most Broadcom wireless NICs.

     A bus connects all of the Silicon Backplane's functional blocks.  These functional blocks,
     known as cores, use the Open Core Protocol (OCP) interface to communicate with agents
     attached to the Silicon Backplane.

     Each NIC uses a chip from the same chip family.  Each member of the family contains a
     different set of cores, but shares basic architectural features such as address space
     definition, interrupt and error architecture, and backplane register definitions.

     Each core can have an initiator agent that passes read and write requests onto the system
     backplane and a target agent that returns responses to those requests.  Not all cores
     contain both an initiator and a target agent.  Initiator agents are present in cores that
     contain host interfaces (PCI, PCMCIA), embedded processors (MIPS), or DMA processors
     associated with communications cores.

     All cores other than PCMCIA have a target agent.




     The siba device driver first appeared in FreeBSD 8.0.


     The siba driver was written by Bruce M. Simpson ⟨⟩ and Weongyo Jeong


     Host mode is not supported at this moment.