RIO_MPORT_GET_FEATUR

Section: Internals (9)
Updated: February 2011
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NAME

rio_mport_get_feature - query for devices' extended features

SYNOPSIS

u32 rio_mport_get_feature(struct rio_mport * port, int local, u16 destid, u8 hopcount, int ftr);

ARGUMENTS

port

: Master port to issue transaction

local

: Indicate a local master port or remote device access

destid

: Destination ID of the device

hopcount

: Number of switch hops to the device

ftr

: Extended feature code

DESCRIPTION

Tell if a device supports a given RapidIO capability. Returns the offset of the requested extended feature block within the device's RIO configuration space or 0 in case the device does not support it. Possible values for ftr:

RIO_EFB_PAR_EP_ID LP/LVDS EP Devices

RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices

RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices

RIO_EFB_SER_EP_ID LP/Serial EP Devices

RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices

RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices

AUTHOR

Matt Porter <mporter@kernel.crashing.org>, <mporter@mvista.com>