• Suzuki K Poulose's avatar
    coresight: Introduce support for Coresight Address Translation Unit · fcacb5c1
    Suzuki K Poulose authored
    Add the initial support for Coresight Address Translation Unit, which
    augments the TMC in Coresight SoC-600 by providing an improved Scatter
    Gather mechanism. CATU is always connected to a single TMC-ETR and
    converts the AXI address with a translated address (from a given SG
    table with specific format). The CATU should be programmed in pass
    through mode and enabled even if the ETR doesn't use the translation
    by CATU.
    
    This patch provides mechanism to enable/disable the CATU always in the
    pass through mode.
    
    We reuse the existing ports mechanism to link the TMC-ETR to the
    connected CATU.
    
    i.e, TMC-ETR:output_port0 -> CATU:input_port0
    
    Reference manual for CATU component is avilable in version r2p0 of :
    "Arm Coresight System-on-Chip SoC-600 Technical Reference Manual".
    
    Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
    Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
    Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    fcacb5c1