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32 .Nd Sonic Inc. Silicon Backplane driver
34 To compile this driver into the kernel,
35 place the following lines in your kernel configuration file:
36 .Bd -ragged -offset indent
40 Alternatively, to load the driver as a module at boot time,
41 place the following line in
43 .Bd -literal -offset indent
49 driver supports the Sonic Inc. Silicon Backplane, the interblock
50 communications architecture that can be found in most Broadcom
53 A bus connects all of the Silicon Backplane's functional blocks.
54 These functional blocks, known as cores, use the Open Core Protocol
55 (OCP) interface to communicate with agents attached to the Silicon
58 Each NIC uses a chip from the same chip family.
59 Each member of the family contains a different set of cores, but
60 shares basic architectural features such as address space definition,
61 interrupt and error architecture, and backplane register definitions.
63 Each core can have an initiator agent that passes read and write
64 requests onto the system backplane and a target agent that returns
65 responses to those requests.
66 Not all cores contain both an initiator and a target agent.
67 Initiator agents are present in cores that contain
68 host interfaces (PCI, PCMCIA), embedded processors (MIPS),
69 or DMA processors associated with communications cores.
71 All cores other than PCMCIA have a target agent.
77 device driver first appeared in
88 .Aq weongyo@FreeBSD.org .
90 Host mode is not supported at this moment.