• Alex Elder's avatar
    net: ipa: start generalizing "ipa_reg" · 81772e44
    Alex Elder authored
    IPA register definitions have evolved with each new version.  The
    changes required to support more than 32 endpoints in IPA v5.0 made
    it best to define a unified mechanism for defining registers and
    their fields.
    
    GSI register definitions, meanwhile, have remained fairly stable.
    And even as the total number of IPA endpoints goes beyond 32, the
    number of GSI channels on a given EE that underly endpoints still
    remains 32 or less.
    
    Despite that, GSI v3.0 (which is used with IPA v5.0) extends the
    number of channels (and events) it supports to be about 256, and as
    a result, many GSI register definitions must change significantly.
    To address this, we'll use the same "ipa_reg" mechanism to define
    the GSI registers.
    
    As a first step in generalizing the "ipa_reg" to also support GSI
    registers, isolate the definitions of the "ipa_reg" and "ipa_regs"
    structure types (and some supporting macros) into a new header file,
    and remove the "ipa_" and "IPA_" from symbol names.
    
    Separate the IPA register ID validity checking from the generic
    check that a register ID is in range.  Aside from that, this is
    intended to have no functional effect on the code.
    Signed-off-by: default avatarAlex Elder <elder@linaro.org>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    81772e44
ipa_endpoint.c 62.7 KB