• Suzuki K Poulose's avatar
    coresight tmc etr: Add capabilitiy information · 2884132a
    Suzuki K Poulose authored
    With new version of TMC ETR, there are differing set of
    features supported by the TMC. Add the capability of a
    given TMC ETR for making safer decisions at runtime.
    
    The device configuration register of the TMC (DEVID) lists
    some of the capabilities. So, we can detect some of them at
    probe. However, some of the features (or changes in behavior)
    are not advertised and we have to depend on the PID to infer
    the features. So we use a static description of the "unadvertised"
    capabilities attached to the PID. Combining both, the static
    and the dynamic capabilities, we maintain a bitmask of the
    available features which can be later checked to take
    appropriate actions.
    
    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>
    2884132a
coresight-tmc.h 5.17 KB